Merge tag 'spdx-5.2-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull SPDX fixes from Greg KH:
"Here are just two small patches, that fix up some found SPDX
identifier issues.
The first patch fixes an error in a previous SPDX fixup patch, that
causes build errors when doing 'make clean' on the tree (the fact that
almost no one noticed it reflects the fact that kernel developers
don't like doing that option very often...)
The second patch fixes up a number of places in the tree where people
mistyped the string "SPDX-License-Identifier". Given that people can
not even type their own name all the time without mistakes, this was
bound to happen, and odds are, we will have to add some type of check
for this to checkpatch.pl to catch this happening in the future.
Both of these have passed testing by 0-day"
* tag 'spdx-5.2-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
treewide: fix typos of SPDX-License-Identifier
crypto: ux500 - fix license comment syntax error
diff --git a/CREDITS b/CREDITS
index 8e03426..681335f 100644
--- a/CREDITS
+++ b/CREDITS
@@ -3364,6 +3364,14 @@
S: 31134 Hildesheim
S: Germany
+N: Martin Schwidefsky
+D: Martin was the most significant contributor to the initial s390
+D: port of the Linux Kernel and later the maintainer of the s390
+D: architecture backend for almost two decades.
+D: He passed away in 2019, and will be greatly missed.
+S: Germany
+W: https://lwn.net/Articles/789028/
+
N: Marcel Selhorst
E: tpmdd@selhorst.net
D: TPM driver
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 88e7460..cf88c1f 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -177,6 +177,15 @@
ignored on non-init namespace mounts. Please refer to the
Delegation section for details.
+ memory_localevents
+
+ Only populate memory.events with data for the current cgroup,
+ and not any subtrees. This is legacy behaviour, the default
+ behaviour without this option is to include subtree counts.
+ This option is system wide and can only be set on mount or
+ modified through remount from the init namespace. The mount
+ option is ignored on non-init namespace mounts.
+
Organizing Processes and Threads
--------------------------------
diff --git a/Documentation/vm/hmm.rst b/Documentation/vm/hmm.rst
index ec1efa3..7cdf728 100644
--- a/Documentation/vm/hmm.rst
+++ b/Documentation/vm/hmm.rst
@@ -288,15 +288,17 @@
WRITE (1 << 62)
Now let say that device driver wants to fault with at least read a range then
-it does set:
- range->default_flags = (1 << 63)
+it does set::
+
+ range->default_flags = (1 << 63);
range->pfn_flags_mask = 0;
and calls hmm_range_fault() as described above. This will fill fault all page
in the range with at least read permission.
Now let say driver wants to do the same except for one page in the range for
-which its want to have write. Now driver set:
+which its want to have write. Now driver set::
+
range->default_flags = (1 << 63);
range->pfn_flags_mask = (1 << 62);
range->pfns[index_of_write] = (1 << 62);
diff --git a/MAINTAINERS b/MAINTAINERS
index 429c6c6..a695477 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -696,6 +696,7 @@
ALTERA I2C CONTROLLER DRIVER
M: Thor Thayer <thor.thayer@linux.intel.com>
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-altera.txt
F: drivers/i2c/busses/i2c-altera.c
ALTERA MAILBOX DRIVER
@@ -1174,6 +1175,7 @@
F: Documentation/devicetree/bindings/arm/arm-boards
F: Documentation/devicetree/bindings/auxdisplay/arm-charlcd.txt
F: Documentation/devicetree/bindings/clock/arm-integrator.txt
+F: Documentation/devicetree/bindings/i2c/i2c-versatile.txt
F: Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
F: Documentation/devicetree/bindings/mtd/arm-versatile.txt
F: arch/arm/mach-integrator/
@@ -1781,6 +1783,7 @@
M: Vladimir Zapolskiy <vz@mleia.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
F: arch/arm/boot/dts/lpc43*
F: drivers/i2c/busses/i2c-lpc2k.c
F: drivers/memory/pl172.c
@@ -1794,6 +1797,7 @@
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
T: git git://github.com/vzapolskiy/linux-lpc32xx.git
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-pnx.txt
F: arch/arm/boot/dts/lpc32*
F: arch/arm/mach-lpc32xx/
F: drivers/i2c/busses/i2c-pnx.c
@@ -1918,6 +1922,8 @@
M: Linus Walleij <linus.walleij@linaro.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
+F: Documentation/devicetree/bindings/i2c/i2c-stu300.txt
F: arch/arm/mach-nomadik/
F: arch/arm/mach-u300/
F: arch/arm/mach-ux500/
@@ -2140,6 +2146,7 @@
L: linux-rockchip@lists.infradead.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
F: arch/arm/boot/dts/rk3*
F: arch/arm/boot/dts/rv1108*
F: arch/arm/mach-rockchip/
@@ -2275,6 +2282,7 @@
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.stlinux.com
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-st.txt
F: arch/arm/mach-sti/
F: arch/arm/boot/dts/sti*
F: drivers/char/hw_random/st-rng.c
@@ -2466,6 +2474,7 @@
M: Tony Prisk <linux@prisktech.co.nz>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-wmt.txt
F: arch/arm/mach-vt8500/
F: drivers/clocksource/timer-vt8500.c
F: drivers/i2c/busses/i2c-wmt.c
@@ -2531,6 +2540,8 @@
F: drivers/block/xsysace.c
N: zynq
N: xilinx
+F: Documentation/devicetree/bindings/i2c/i2c-cadence.txt
+F: Documentation/devicetree/bindings/i2c/i2c-xiic.txt
F: drivers/clocksource/timer-cadence-ttc.c
F: drivers/i2c/busses/i2c-cadence.c
F: drivers/mmc/host/sdhci-of-arasan.c
@@ -3049,8 +3060,9 @@
F: arch/riscv/net/
BPF JIT for S390
-M: Martin Schwidefsky <schwidefsky@de.ibm.com>
M: Heiko Carstens <heiko.carstens@de.ibm.com>
+M: Vasily Gorbik <gor@linux.ibm.com>
+M: Christian Borntraeger <borntraeger@de.ibm.com>
L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Maintained
@@ -7341,6 +7353,7 @@
M: Gregory CLEMENT <gregory.clement@bootlin.com>
L: linux-i2c@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
F: drivers/i2c/busses/i2c-mv64xxx.c
I2C OVER PARALLEL PORT
@@ -11724,6 +11737,7 @@
M: Andrew Lunn <andrew@lunn.ch>
L: linux-i2c@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/i2c/i2c-ocores.txt
F: Documentation/i2c/busses/i2c-ocores
F: drivers/i2c/busses/i2c-ocores.c
F: include/linux/platform_data/i2c-ocores.h
@@ -13363,6 +13377,7 @@
RENESAS EMEV2 I2C DRIVER
M: Wolfram Sang <wsa+renesas@sang-engineering.com>
S: Supported
+F: Documentation/devicetree/bindings/i2c/i2c-emev2.txt
F: drivers/i2c/busses/i2c-emev2.c
RENESAS ETHERNET DRIVERS
@@ -13384,6 +13399,8 @@
RENESAS R-CAR I2C DRIVERS
M: Wolfram Sang <wsa+renesas@sang-engineering.com>
S: Supported
+F: Documentation/devicetree/bindings/i2c/i2c-rcar.txt
+F: Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt
F: drivers/i2c/busses/i2c-rcar.c
F: drivers/i2c/busses/i2c-sh_mobile.c
@@ -13614,8 +13631,9 @@
F: drivers/video/fbdev/savage/
S390
-M: Martin Schwidefsky <schwidefsky@de.ibm.com>
M: Heiko Carstens <heiko.carstens@de.ibm.com>
+M: Vasily Gorbik <gor@linux.ibm.com>
+M: Christian Borntraeger <borntraeger@de.ibm.com>
L: linux-s390@vger.kernel.org
W: http://www.ibm.com/developerworks/linux/linux390/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git
@@ -15672,6 +15690,7 @@
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
T: git git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci.git
S: Supported
+F: Documentation/devicetree/bindings/i2c/i2c-davinci.txt
F: arch/arm/mach-davinci/
F: drivers/i2c/busses/i2c-davinci.c
F: arch/arm/boot/dts/da850*
@@ -17375,6 +17394,7 @@
L: linux-i2c@vger.kernel.org
W: http://www.cavium.com
S: Supported
+F: Documentation/devicetree/bindings/i2c/i2c-xlp9xx.txt
F: drivers/i2c/busses/i2c-xlp9xx.c
XRA1403 GPIO EXPANDER
diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
index c16c182..aa075d8 100644
--- a/arch/arm/boot/compressed/decompress.c
+++ b/arch/arm/boot/compressed/decompress.c
@@ -32,6 +32,7 @@
extern char * strstr(const char * s1, const char *s2);
extern size_t strlen(const char *s);
extern int memcmp(const void *cs, const void *ct, size_t count);
+extern char * strchrnul(const char *, int);
#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 6d0517a..0369f26 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -1122,6 +1122,9 @@
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
break;
+ case KVM_CAP_MAX_VCPU_ID:
+ r = KVM_MAX_VCPU_ID;
+ break;
case KVM_CAP_MIPS_FPU:
/* We don't handle systems with inconsistent cpu_has_fpu */
r = !!raw_cpu_has_fpu;
diff --git a/arch/parisc/configs/c8000_defconfig b/arch/parisc/configs/c8000_defconfig
index 088ab94..900b0008 100644
--- a/arch/parisc/configs/c8000_defconfig
+++ b/arch/parisc/configs/c8000_defconfig
@@ -225,7 +225,6 @@
CONFIG_DEBUG_FS=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_SLAB=y
-CONFIG_DEBUG_SLAB_LEAK=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_PANIC_ON_OOPS=y
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 013c76a..d10df67 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -309,6 +309,7 @@
#ifdef CONFIG_PPC_BOOK3S_64
struct list_head spapr_tce_tables;
struct list_head rtas_tokens;
+ struct mutex rtas_token_lock;
DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
#endif
#ifdef CONFIG_KVM_MPIC
@@ -325,6 +326,7 @@
#endif
struct kvmppc_ops *kvm_ops;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+ struct mutex mmu_setup_lock; /* nests inside vcpu mutexes */
u64 l1_ptcr;
int max_nested_lpid;
struct kvm_nested_guest *nested_guests[KVM_MAX_NESTED_GUESTS];
diff --git a/arch/powerpc/kernel/kexec_elf_64.c b/arch/powerpc/kernel/kexec_elf_64.c
index ba4f18a..52a29fc 100644
--- a/arch/powerpc/kernel/kexec_elf_64.c
+++ b/arch/powerpc/kernel/kexec_elf_64.c
@@ -547,6 +547,7 @@
kbuf.memsz = phdr->p_memsz;
kbuf.buf_align = phdr->p_align;
kbuf.buf_min = phdr->p_paddr + base;
+ kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
@@ -581,7 +582,8 @@
struct kexec_buf kbuf = { .image = image, .buf_min = 0,
.buf_max = ppc64_rma_size };
struct kexec_buf pbuf = { .image = image, .buf_min = 0,
- .buf_max = ppc64_rma_size, .top_down = true };
+ .buf_max = ppc64_rma_size, .top_down = true,
+ .mem = KEXEC_BUF_MEM_UNKNOWN };
ret = build_elf_exec_info(kernel_buf, kernel_len, &ehdr, &elf_info);
if (ret)
@@ -606,6 +608,7 @@
kbuf.bufsz = kbuf.memsz = initrd_len;
kbuf.buf_align = PAGE_SIZE;
kbuf.top_down = false;
+ kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
@@ -638,6 +641,7 @@
kbuf.bufsz = kbuf.memsz = fdt_size;
kbuf.buf_align = PAGE_SIZE;
kbuf.top_down = true;
+ kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 61a212d..ac56648 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -902,6 +902,7 @@
#ifdef CONFIG_PPC64
INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
+ mutex_init(&kvm->arch.rtas_token_lock);
#endif
return kvm->arch.kvm_ops->init_vm(kvm);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index ab3d484..5197131 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -63,7 +63,7 @@
struct work_struct work;
u32 order;
- /* These fields protected by kvm->lock */
+ /* These fields protected by kvm->arch.mmu_setup_lock */
/* Possible values and their usage:
* <0 an error occurred during allocation,
@@ -73,7 +73,7 @@
int error;
/* Private to the work thread, until error != -EBUSY,
- * then protected by kvm->lock.
+ * then protected by kvm->arch.mmu_setup_lock.
*/
struct kvm_hpt_info hpt;
};
@@ -139,7 +139,7 @@
long err = -EBUSY;
struct kvm_hpt_info info;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
if (kvm->arch.mmu_ready) {
kvm->arch.mmu_ready = 0;
/* order mmu_ready vs. vcpus_running */
@@ -183,7 +183,7 @@
/* Ensure that each vcpu will flush its TLB on next entry. */
cpumask_setall(&kvm->arch.need_tlb_flush);
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return err;
}
@@ -1447,7 +1447,7 @@
static void resize_hpt_release(struct kvm *kvm, struct kvm_resize_hpt *resize)
{
- if (WARN_ON(!mutex_is_locked(&kvm->lock)))
+ if (WARN_ON(!mutex_is_locked(&kvm->arch.mmu_setup_lock)))
return;
if (!resize)
@@ -1474,14 +1474,14 @@
if (WARN_ON(resize->error != -EBUSY))
return;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
/* Request is still current? */
if (kvm->arch.resize_hpt == resize) {
/* We may request large allocations here:
- * do not sleep with kvm->lock held for a while.
+ * do not sleep with kvm->arch.mmu_setup_lock held for a while.
*/
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
resize_hpt_debug(resize, "resize_hpt_prepare_work(): order = %d\n",
resize->order);
@@ -1494,9 +1494,9 @@
if (WARN_ON(err == -EBUSY))
err = -EINPROGRESS;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
/* It is possible that kvm->arch.resize_hpt != resize
- * after we grab kvm->lock again.
+ * after we grab kvm->arch.mmu_setup_lock again.
*/
}
@@ -1505,7 +1505,7 @@
if (kvm->arch.resize_hpt != resize)
resize_hpt_release(kvm, resize);
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
}
long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
@@ -1522,7 +1522,7 @@
if (shift && ((shift < 18) || (shift > 46)))
return -EINVAL;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
resize = kvm->arch.resize_hpt;
@@ -1565,7 +1565,7 @@
ret = 100; /* estimated time in ms */
out:
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return ret;
}
@@ -1588,7 +1588,7 @@
if (shift && ((shift < 18) || (shift > 46)))
return -EINVAL;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
resize = kvm->arch.resize_hpt;
@@ -1625,7 +1625,7 @@
smp_mb();
out_no_hpt:
resize_hpt_release(kvm, resize);
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return ret;
}
@@ -1868,7 +1868,7 @@
return -EINVAL;
/* lock out vcpus from running while we're doing this */
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
mmu_ready = kvm->arch.mmu_ready;
if (mmu_ready) {
kvm->arch.mmu_ready = 0; /* temporarily */
@@ -1876,7 +1876,7 @@
smp_mb();
if (atomic_read(&kvm->arch.vcpus_running)) {
kvm->arch.mmu_ready = 1;
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return -EBUSY;
}
}
@@ -1963,7 +1963,7 @@
/* Order HPTE updates vs. mmu_ready */
smp_wmb();
kvm->arch.mmu_ready = mmu_ready;
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
if (err)
return err;
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index d5fc624..5e84011 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -446,12 +446,7 @@
static struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id)
{
- struct kvm_vcpu *ret;
-
- mutex_lock(&kvm->lock);
- ret = kvm_get_vcpu_by_id(kvm, id);
- mutex_unlock(&kvm->lock);
- return ret;
+ return kvm_get_vcpu_by_id(kvm, id);
}
static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa)
@@ -1583,7 +1578,6 @@
struct kvmppc_vcore *vc = vcpu->arch.vcore;
u64 mask;
- mutex_lock(&kvm->lock);
spin_lock(&vc->lock);
/*
* If ILE (interrupt little-endian) has changed, update the
@@ -1623,7 +1617,6 @@
mask &= 0xFFFFFFFF;
vc->lpcr = (vc->lpcr & ~mask) | (new_lpcr & mask);
spin_unlock(&vc->lock);
- mutex_unlock(&kvm->lock);
}
static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
@@ -2338,11 +2331,17 @@
pr_devel("KVM: collision on id %u", id);
vcore = NULL;
} else if (!vcore) {
+ /*
+ * Take mmu_setup_lock for mutual exclusion
+ * with kvmppc_update_lpcr().
+ */
err = -ENOMEM;
vcore = kvmppc_vcore_create(kvm,
id & ~(kvm->arch.smt_mode - 1));
+ mutex_lock(&kvm->arch.mmu_setup_lock);
kvm->arch.vcores[core] = vcore;
kvm->arch.online_vcores++;
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
}
}
mutex_unlock(&kvm->lock);
@@ -3663,6 +3662,7 @@
vc->in_guest = 0;
mtspr(SPRN_DEC, local_paca->kvm_hstate.dec_expires - mftb());
+ mtspr(SPRN_SPRG_VDSO_WRITE, local_paca->sprg_vdso);
kvmhv_load_host_pmu();
@@ -3859,7 +3859,7 @@
int r = 0;
struct kvm *kvm = vcpu->kvm;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
if (!kvm->arch.mmu_ready) {
if (!kvm_is_radix(kvm))
r = kvmppc_hv_setup_htab_rma(vcpu);
@@ -3869,7 +3869,7 @@
kvm->arch.mmu_ready = 1;
}
}
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return r;
}
@@ -4091,16 +4091,20 @@
kvmppc_check_need_tlb_flush(kvm, pcpu, nested);
}
- trace_hardirqs_on();
guest_enter_irqoff();
srcu_idx = srcu_read_lock(&kvm->srcu);
this_cpu_disable_ftrace();
+ /* Tell lockdep that we're about to enable interrupts */
+ trace_hardirqs_on();
+
trap = kvmhv_p9_guest_entry(vcpu, time_limit, lpcr);
vcpu->arch.trap = trap;
+ trace_hardirqs_off();
+
this_cpu_enable_ftrace();
srcu_read_unlock(&kvm->srcu, srcu_idx);
@@ -4110,7 +4114,6 @@
isync();
}
- trace_hardirqs_off();
set_irq_happened(trap);
kvmppc_set_host_core(pcpu);
@@ -4478,7 +4481,8 @@
/*
* Update LPCR values in kvm->arch and in vcores.
- * Caller must hold kvm->lock.
+ * Caller must hold kvm->arch.mmu_setup_lock (for mutual exclusion
+ * of kvm->arch.lpcr update).
*/
void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, unsigned long mask)
{
@@ -4530,7 +4534,7 @@
/*
* Set up HPT (hashed page table) and RMA (real-mode area).
- * Must be called with kvm->lock held.
+ * Must be called with kvm->arch.mmu_setup_lock held.
*/
static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu)
{
@@ -4618,7 +4622,10 @@
goto out_srcu;
}
-/* Must be called with kvm->lock held and mmu_ready = 0 and no vcpus running */
+/*
+ * Must be called with kvm->arch.mmu_setup_lock held and
+ * mmu_ready = 0 and no vcpus running.
+ */
int kvmppc_switch_mmu_to_hpt(struct kvm *kvm)
{
if (nesting_enabled(kvm))
@@ -4635,7 +4642,10 @@
return 0;
}
-/* Must be called with kvm->lock held and mmu_ready = 0 and no vcpus running */
+/*
+ * Must be called with kvm->arch.mmu_setup_lock held and
+ * mmu_ready = 0 and no vcpus running.
+ */
int kvmppc_switch_mmu_to_radix(struct kvm *kvm)
{
int err;
@@ -4740,6 +4750,8 @@
char buf[32];
int ret;
+ mutex_init(&kvm->arch.mmu_setup_lock);
+
/* Allocate the guest's logical partition ID */
lpid = kvmppc_alloc_lpid();
@@ -5265,7 +5277,7 @@
if (kvmhv_on_pseries() && !radix)
return -EINVAL;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.mmu_setup_lock);
if (radix != kvm_is_radix(kvm)) {
if (kvm->arch.mmu_ready) {
kvm->arch.mmu_ready = 0;
@@ -5293,7 +5305,7 @@
err = 0;
out_unlock:
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.mmu_setup_lock);
return err;
}
diff --git a/arch/powerpc/kvm/book3s_rtas.c b/arch/powerpc/kvm/book3s_rtas.c
index 4e178c4..b7ae3df 100644
--- a/arch/powerpc/kvm/book3s_rtas.c
+++ b/arch/powerpc/kvm/book3s_rtas.c
@@ -146,7 +146,7 @@
{
struct rtas_token_definition *d, *tmp;
- lockdep_assert_held(&kvm->lock);
+ lockdep_assert_held(&kvm->arch.rtas_token_lock);
list_for_each_entry_safe(d, tmp, &kvm->arch.rtas_tokens, list) {
if (rtas_name_matches(d->handler->name, name)) {
@@ -167,7 +167,7 @@
bool found;
int i;
- lockdep_assert_held(&kvm->lock);
+ lockdep_assert_held(&kvm->arch.rtas_token_lock);
list_for_each_entry(d, &kvm->arch.rtas_tokens, list) {
if (d->token == token)
@@ -206,14 +206,14 @@
if (copy_from_user(&args, argp, sizeof(args)))
return -EFAULT;
- mutex_lock(&kvm->lock);
+ mutex_lock(&kvm->arch.rtas_token_lock);
if (args.token)
rc = rtas_token_define(kvm, args.name, args.token);
else
rc = rtas_token_undefine(kvm, args.name);
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&kvm->arch.rtas_token_lock);
return rc;
}
@@ -245,7 +245,7 @@
orig_rets = args.rets;
args.rets = &args.args[be32_to_cpu(args.nargs)];
- mutex_lock(&vcpu->kvm->lock);
+ mutex_lock(&vcpu->kvm->arch.rtas_token_lock);
rc = -ENOENT;
list_for_each_entry(d, &vcpu->kvm->arch.rtas_tokens, list) {
@@ -256,7 +256,7 @@
}
}
- mutex_unlock(&vcpu->kvm->lock);
+ mutex_unlock(&vcpu->kvm->arch.rtas_token_lock);
if (rc == 0) {
args.rets = orig_rets;
@@ -282,8 +282,6 @@
{
struct rtas_token_definition *d, *tmp;
- lockdep_assert_held(&kvm->lock);
-
list_for_each_entry_safe(d, tmp, &kvm->arch.rtas_tokens, list) {
list_del(&d->list);
kfree(d);
diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
index 4953957..922fd62 100644
--- a/arch/powerpc/kvm/book3s_xive.c
+++ b/arch/powerpc/kvm/book3s_xive.c
@@ -271,14 +271,14 @@
return rc;
}
-/* Called with kvm_lock held */
+/* Called with xive->lock held */
static int xive_check_provisioning(struct kvm *kvm, u8 prio)
{
struct kvmppc_xive *xive = kvm->arch.xive;
struct kvm_vcpu *vcpu;
int i, rc;
- lockdep_assert_held(&kvm->lock);
+ lockdep_assert_held(&xive->lock);
/* Already provisioned ? */
if (xive->qmap & (1 << prio))
@@ -621,9 +621,12 @@
irq, server, priority);
/* First, check provisioning of queues */
- if (priority != MASKED)
+ if (priority != MASKED) {
+ mutex_lock(&xive->lock);
rc = xive_check_provisioning(xive->kvm,
xive_prio_from_guest(priority));
+ mutex_unlock(&xive->lock);
+ }
if (rc) {
pr_devel(" provisioning failure %d !\n", rc);
return rc;
@@ -1199,7 +1202,7 @@
return -ENOMEM;
/* We need to synchronize with queue provisioning */
- mutex_lock(&vcpu->kvm->lock);
+ mutex_lock(&xive->lock);
vcpu->arch.xive_vcpu = xc;
xc->xive = xive;
xc->vcpu = vcpu;
@@ -1283,7 +1286,7 @@
xive_vm_esb_load(&xc->vp_ipi_data, XIVE_ESB_SET_PQ_00);
bail:
- mutex_unlock(&vcpu->kvm->lock);
+ mutex_unlock(&xive->lock);
if (r) {
kvmppc_xive_cleanup_vcpu(vcpu);
return r;
@@ -1527,13 +1530,12 @@
struct kvmppc_xive_src_block *kvmppc_xive_create_src_block(
struct kvmppc_xive *xive, int irq)
{
- struct kvm *kvm = xive->kvm;
struct kvmppc_xive_src_block *sb;
int i, bid;
bid = irq >> KVMPPC_XICS_ICS_SHIFT;
- mutex_lock(&kvm->lock);
+ mutex_lock(&xive->lock);
/* block already exists - somebody else got here first */
if (xive->src_blocks[bid])
@@ -1560,7 +1562,7 @@
xive->max_sbid = bid;
out:
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&xive->lock);
return xive->src_blocks[bid];
}
@@ -1670,9 +1672,9 @@
/* If we have a priority target the interrupt */
if (act_prio != MASKED) {
/* First, check provisioning of queues */
- mutex_lock(&xive->kvm->lock);
+ mutex_lock(&xive->lock);
rc = xive_check_provisioning(xive->kvm, act_prio);
- mutex_unlock(&xive->kvm->lock);
+ mutex_unlock(&xive->lock);
/* Target interrupt */
if (rc == 0)
@@ -1826,7 +1828,6 @@
{
xive_vm_esb_load(xd, XIVE_ESB_SET_PQ_01);
xive_native_configure_irq(hw_num, 0, MASKED, 0);
- xive_cleanup_irq_data(xd);
}
void kvmppc_xive_free_sources(struct kvmppc_xive_src_block *sb)
@@ -1840,9 +1841,10 @@
continue;
kvmppc_xive_cleanup_irq(state->ipi_number, &state->ipi_data);
+ xive_cleanup_irq_data(&state->ipi_data);
xive_native_free_irq(state->ipi_number);
- /* Pass-through, cleanup too */
+ /* Pass-through, cleanup too but keep IRQ hw data */
if (state->pt_number)
kvmppc_xive_cleanup_irq(state->pt_number, state->pt_data);
@@ -1859,21 +1861,10 @@
struct kvm *kvm = xive->kvm;
struct kvm_vcpu *vcpu;
int i;
- int was_ready;
pr_devel("Releasing xive device\n");
- debugfs_remove(xive->dentry);
-
/*
- * Clearing mmu_ready temporarily while holding kvm->lock
- * is a way of ensuring that no vcpus can enter the guest
- * until we drop kvm->lock. Doing kick_all_cpus_sync()
- * ensures that any vcpu executing inside the guest has
- * exited the guest. Once kick_all_cpus_sync() has finished,
- * we know that no vcpu can be executing the XIVE push or
- * pull code, or executing a XICS hcall.
- *
* Since this is the device release function, we know that
* userspace does not have any open fd referring to the
* device. Therefore there can not be any of the device
@@ -1881,9 +1872,8 @@
* and similarly, the connect_vcpu and set/clr_mapped
* functions also cannot be being executed.
*/
- was_ready = kvm->arch.mmu_ready;
- kvm->arch.mmu_ready = 0;
- kick_all_cpus_sync();
+
+ debugfs_remove(xive->dentry);
/*
* We should clean up the vCPU interrupt presenters first.
@@ -1892,12 +1882,22 @@
/*
* Take vcpu->mutex to ensure that no one_reg get/set ioctl
* (i.e. kvmppc_xive_[gs]et_icp) can be done concurrently.
+ * Holding the vcpu->mutex also means that the vcpu cannot
+ * be executing the KVM_RUN ioctl, and therefore it cannot
+ * be executing the XIVE push or pull code or accessing
+ * the XIVE MMIO regions.
*/
mutex_lock(&vcpu->mutex);
kvmppc_xive_cleanup_vcpu(vcpu);
mutex_unlock(&vcpu->mutex);
}
+ /*
+ * Now that we have cleared vcpu->arch.xive_vcpu, vcpu->arch.irq_type
+ * and vcpu->arch.xive_esc_[vr]addr on each vcpu, we are safe
+ * against xive code getting called during vcpu execution or
+ * set/get one_reg operations.
+ */
kvm->arch.xive = NULL;
/* Mask and free interrupts */
@@ -1911,8 +1911,6 @@
if (xive->vp_base != XIVE_INVALID_VP)
xive_native_free_vp_block(xive->vp_base);
- kvm->arch.mmu_ready = was_ready;
-
/*
* A reference of the kvmppc_xive pointer is now kept under
* the xive_devices struct of the machine for reuse. It is
@@ -1967,6 +1965,7 @@
dev->private = xive;
xive->dev = dev;
xive->kvm = kvm;
+ mutex_init(&xive->lock);
/* Already there ? */
if (kvm->arch.xive)
diff --git a/arch/powerpc/kvm/book3s_xive.h b/arch/powerpc/kvm/book3s_xive.h
index 4261463..862c2c9 100644
--- a/arch/powerpc/kvm/book3s_xive.h
+++ b/arch/powerpc/kvm/book3s_xive.h
@@ -141,6 +141,7 @@
struct kvmppc_xive_ops *ops;
struct address_space *mapping;
struct mutex mapping_lock;
+ struct mutex lock;
};
#define KVMPPC_XIVE_Q_COUNT 8
diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c
index 6a8e698..5596c8e 100644
--- a/arch/powerpc/kvm/book3s_xive_native.c
+++ b/arch/powerpc/kvm/book3s_xive_native.c
@@ -109,12 +109,12 @@
return -EPERM;
if (vcpu->arch.irq_type != KVMPPC_IRQ_DEFAULT)
return -EBUSY;
- if (server_num >= KVM_MAX_VCPUS) {
+ if (server_num >= (KVM_MAX_VCPUS * vcpu->kvm->arch.emul_smt_mode)) {
pr_devel("Out of bounds !\n");
return -EINVAL;
}
- mutex_lock(&vcpu->kvm->lock);
+ mutex_lock(&xive->lock);
if (kvmppc_xive_find_server(vcpu->kvm, server_num)) {
pr_devel("Duplicate !\n");
@@ -159,7 +159,7 @@
/* TODO: reset all queues to a clean state ? */
bail:
- mutex_unlock(&vcpu->kvm->lock);
+ mutex_unlock(&xive->lock);
if (rc)
kvmppc_xive_native_cleanup_vcpu(vcpu);
@@ -172,6 +172,7 @@
static int kvmppc_xive_native_reset_mapped(struct kvm *kvm, unsigned long irq)
{
struct kvmppc_xive *xive = kvm->arch.xive;
+ pgoff_t esb_pgoff = KVM_XIVE_ESB_PAGE_OFFSET + irq * 2;
if (irq >= KVMPPC_XIVE_NR_IRQS)
return -EINVAL;
@@ -185,7 +186,7 @@
mutex_lock(&xive->mapping_lock);
if (xive->mapping)
unmap_mapping_range(xive->mapping,
- irq * (2ull << PAGE_SHIFT),
+ esb_pgoff << PAGE_SHIFT,
2ull << PAGE_SHIFT, 1);
mutex_unlock(&xive->mapping_lock);
return 0;
@@ -535,6 +536,7 @@
struct xive_q *q;
gfn_t gfn;
unsigned long page_size;
+ int srcu_idx;
/*
* Demangle priority/server tuple from the EQ identifier
@@ -565,24 +567,6 @@
__func__, server, priority, kvm_eq.flags,
kvm_eq.qshift, kvm_eq.qaddr, kvm_eq.qtoggle, kvm_eq.qindex);
- /*
- * sPAPR specifies a "Unconditional Notify (n) flag" for the
- * H_INT_SET_QUEUE_CONFIG hcall which forces notification
- * without using the coalescing mechanisms provided by the
- * XIVE END ESBs. This is required on KVM as notification
- * using the END ESBs is not supported.
- */
- if (kvm_eq.flags != KVM_XIVE_EQ_ALWAYS_NOTIFY) {
- pr_err("invalid flags %d\n", kvm_eq.flags);
- return -EINVAL;
- }
-
- rc = xive_native_validate_queue_size(kvm_eq.qshift);
- if (rc) {
- pr_err("invalid queue size %d\n", kvm_eq.qshift);
- return rc;
- }
-
/* reset queue and disable queueing */
if (!kvm_eq.qshift) {
q->guest_qaddr = 0;
@@ -604,26 +588,48 @@
return 0;
}
+ /*
+ * sPAPR specifies a "Unconditional Notify (n) flag" for the
+ * H_INT_SET_QUEUE_CONFIG hcall which forces notification
+ * without using the coalescing mechanisms provided by the
+ * XIVE END ESBs. This is required on KVM as notification
+ * using the END ESBs is not supported.
+ */
+ if (kvm_eq.flags != KVM_XIVE_EQ_ALWAYS_NOTIFY) {
+ pr_err("invalid flags %d\n", kvm_eq.flags);
+ return -EINVAL;
+ }
+
+ rc = xive_native_validate_queue_size(kvm_eq.qshift);
+ if (rc) {
+ pr_err("invalid queue size %d\n", kvm_eq.qshift);
+ return rc;
+ }
+
if (kvm_eq.qaddr & ((1ull << kvm_eq.qshift) - 1)) {
pr_err("queue page is not aligned %llx/%llx\n", kvm_eq.qaddr,
1ull << kvm_eq.qshift);
return -EINVAL;
}
+ srcu_idx = srcu_read_lock(&kvm->srcu);
gfn = gpa_to_gfn(kvm_eq.qaddr);
page = gfn_to_page(kvm, gfn);
if (is_error_page(page)) {
+ srcu_read_unlock(&kvm->srcu, srcu_idx);
pr_err("Couldn't get queue page %llx!\n", kvm_eq.qaddr);
return -EINVAL;
}
page_size = kvm_host_page_size(kvm, gfn);
if (1ull << kvm_eq.qshift > page_size) {
+ srcu_read_unlock(&kvm->srcu, srcu_idx);
pr_warn("Incompatible host page size %lx!\n", page_size);
return -EINVAL;
}
qaddr = page_to_virt(page) + (kvm_eq.qaddr & ~PAGE_MASK);
+ srcu_read_unlock(&kvm->srcu, srcu_idx);
/*
* Backup the queue page guest address to the mark EQ page
@@ -772,7 +778,7 @@
pr_devel("%s\n", __func__);
- mutex_lock(&kvm->lock);
+ mutex_lock(&xive->lock);
kvm_for_each_vcpu(i, vcpu, kvm) {
struct kvmppc_xive_vcpu *xc = vcpu->arch.xive_vcpu;
@@ -810,7 +816,7 @@
}
}
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&xive->lock);
return 0;
}
@@ -854,6 +860,7 @@
{
struct kvmppc_xive_vcpu *xc = vcpu->arch.xive_vcpu;
unsigned int prio;
+ int srcu_idx;
if (!xc)
return -ENOENT;
@@ -865,7 +872,9 @@
continue;
/* Mark EQ page dirty for migration */
+ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
mark_page_dirty(vcpu->kvm, gpa_to_gfn(q->guest_qaddr));
+ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
}
return 0;
}
@@ -878,7 +887,7 @@
pr_devel("%s\n", __func__);
- mutex_lock(&kvm->lock);
+ mutex_lock(&xive->lock);
for (i = 0; i <= xive->max_sbid; i++) {
struct kvmppc_xive_src_block *sb = xive->src_blocks[i];
@@ -892,7 +901,7 @@
kvm_for_each_vcpu(i, vcpu, kvm) {
kvmppc_xive_native_vcpu_eq_sync(vcpu);
}
- mutex_unlock(&kvm->lock);
+ mutex_unlock(&xive->lock);
return 0;
}
@@ -965,7 +974,7 @@
}
/*
- * Called when device fd is closed
+ * Called when device fd is closed. kvm->lock is held.
*/
static void kvmppc_xive_native_release(struct kvm_device *dev)
{
@@ -973,21 +982,18 @@
struct kvm *kvm = xive->kvm;
struct kvm_vcpu *vcpu;
int i;
- int was_ready;
-
- debugfs_remove(xive->dentry);
pr_devel("Releasing xive native device\n");
/*
- * Clearing mmu_ready temporarily while holding kvm->lock
- * is a way of ensuring that no vcpus can enter the guest
- * until we drop kvm->lock. Doing kick_all_cpus_sync()
- * ensures that any vcpu executing inside the guest has
- * exited the guest. Once kick_all_cpus_sync() has finished,
- * we know that no vcpu can be executing the XIVE push or
- * pull code or accessing the XIVE MMIO regions.
- *
+ * Clear the KVM device file address_space which is used to
+ * unmap the ESB pages when a device is passed-through.
+ */
+ mutex_lock(&xive->mapping_lock);
+ xive->mapping = NULL;
+ mutex_unlock(&xive->mapping_lock);
+
+ /*
* Since this is the device release function, we know that
* userspace does not have any open fd or mmap referring to
* the device. Therefore there can not be any of the
@@ -996,9 +1002,8 @@
* connect_vcpu and set/clr_mapped functions also cannot
* be being executed.
*/
- was_ready = kvm->arch.mmu_ready;
- kvm->arch.mmu_ready = 0;
- kick_all_cpus_sync();
+
+ debugfs_remove(xive->dentry);
/*
* We should clean up the vCPU interrupt presenters first.
@@ -1007,12 +1012,22 @@
/*
* Take vcpu->mutex to ensure that no one_reg get/set ioctl
* (i.e. kvmppc_xive_native_[gs]et_vp) can be being done.
+ * Holding the vcpu->mutex also means that the vcpu cannot
+ * be executing the KVM_RUN ioctl, and therefore it cannot
+ * be executing the XIVE push or pull code or accessing
+ * the XIVE MMIO regions.
*/
mutex_lock(&vcpu->mutex);
kvmppc_xive_native_cleanup_vcpu(vcpu);
mutex_unlock(&vcpu->mutex);
}
+ /*
+ * Now that we have cleared vcpu->arch.xive_vcpu, vcpu->arch.irq_type
+ * and vcpu->arch.xive_esc_[vr]addr on each vcpu, we are safe
+ * against xive code getting called during vcpu execution or
+ * set/get one_reg operations.
+ */
kvm->arch.xive = NULL;
for (i = 0; i <= xive->max_sbid; i++) {
@@ -1025,8 +1040,6 @@
if (xive->vp_base != XIVE_INVALID_VP)
xive_native_free_vp_block(xive->vp_base);
- kvm->arch.mmu_ready = was_ready;
-
/*
* A reference of the kvmppc_xive pointer is now kept under
* the xive_devices struct of the machine for reuse. It is
@@ -1060,6 +1073,7 @@
xive->kvm = kvm;
kvm->arch.xive = xive;
mutex_init(&xive->mapping_lock);
+ mutex_init(&xive->lock);
/*
* Allocate a bunch of VPs. KVM_MAX_VCPUS is a large value for
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 3393b16..aa3a678 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -657,6 +657,9 @@
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
break;
+ case KVM_CAP_MAX_VCPU_ID:
+ r = KVM_MAX_VCPU_ID;
+ break;
#ifdef CONFIG_PPC_BOOK3S_64
case KVM_CAP_PPC_GET_SMMU_INFO:
r = 1;
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 7e129f6..ca92e01 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -1846,6 +1846,7 @@
int n;
int err;
struct cpu_hw_events *cpuhw;
+ u64 bhrb_filter;
if (!ppmu)
return -ENOENT;
@@ -1951,13 +1952,14 @@
err = power_check_constraints(cpuhw, events, cflags, n + 1);
if (has_branch_stack(event)) {
- cpuhw->bhrb_filter = ppmu->bhrb_filter_map(
+ bhrb_filter = ppmu->bhrb_filter_map(
event->attr.branch_sample_type);
- if (cpuhw->bhrb_filter == -1) {
+ if (bhrb_filter == -1) {
put_cpu_var(cpu_hw_events);
return -EOPNOTSUPP;
}
+ cpuhw->bhrb_filter = bhrb_filter;
}
put_cpu_var(cpu_hw_events);
diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c
index b47e9fb..3a5fcc2 100644
--- a/arch/powerpc/perf/power8-pmu.c
+++ b/arch/powerpc/perf/power8-pmu.c
@@ -25,6 +25,7 @@
#define POWER8_MMCRA_IFM1 0x0000000040000000UL
#define POWER8_MMCRA_IFM2 0x0000000080000000UL
#define POWER8_MMCRA_IFM3 0x00000000C0000000UL
+#define POWER8_MMCRA_BHRB_MASK 0x00000000C0000000UL
/*
* Raw event encoding for PowerISA v2.07 (Power8):
@@ -239,6 +240,8 @@
static void power8_config_bhrb(u64 pmu_bhrb_filter)
{
+ pmu_bhrb_filter &= POWER8_MMCRA_BHRB_MASK;
+
/* Enable BHRB filter in PMU */
mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter));
}
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 738ed26..08c3ef7 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -88,6 +88,7 @@
#define POWER9_MMCRA_IFM1 0x0000000040000000UL
#define POWER9_MMCRA_IFM2 0x0000000080000000UL
#define POWER9_MMCRA_IFM3 0x00000000C0000000UL
+#define POWER9_MMCRA_BHRB_MASK 0x00000000C0000000UL
/* Nasty Power9 specific hack */
#define PVR_POWER9_CUMULUS 0x00002000
@@ -296,6 +297,8 @@
static void power9_config_bhrb(u64 pmu_bhrb_filter)
{
+ pmu_bhrb_filter &= POWER9_MMCRA_BHRB_MASK;
+
/* Enable BHRB filter in PMU */
mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter));
}
diff --git a/arch/powerpc/platforms/powernv/opal-imc.c b/arch/powerpc/platforms/powernv/opal-imc.c
index 1b69328..186109b 100644
--- a/arch/powerpc/platforms/powernv/opal-imc.c
+++ b/arch/powerpc/platforms/powernv/opal-imc.c
@@ -157,6 +157,10 @@
struct imc_pmu *pmu_ptr;
u32 offset;
+ /* Return for unknown domain */
+ if (domain < 0)
+ return -EINVAL;
+
/* memory for pmu */
pmu_ptr = kzalloc(sizeof(*pmu_ptr), GFP_KERNEL);
if (!pmu_ptr)
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index dd45672..d00f84a 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -27,14 +27,14 @@
#include <linux/module.h>
#include <linux/cpufeature.h>
#include <linux/init.h>
-#include <linux/spinlock.h>
+#include <linux/mutex.h>
#include <linux/fips.h>
#include <linux/string.h>
#include <crypto/xts.h>
#include <asm/cpacf.h>
static u8 *ctrblk;
-static DEFINE_SPINLOCK(ctrblk_lock);
+static DEFINE_MUTEX(ctrblk_lock);
static cpacf_mask_t km_functions, kmc_functions, kmctr_functions,
kma_functions;
@@ -698,7 +698,7 @@
unsigned int n, nbytes;
int ret, locked;
- locked = spin_trylock(&ctrblk_lock);
+ locked = mutex_trylock(&ctrblk_lock);
ret = blkcipher_walk_virt_block(desc, walk, AES_BLOCK_SIZE);
while ((nbytes = walk->nbytes) >= AES_BLOCK_SIZE) {
@@ -716,7 +716,7 @@
ret = blkcipher_walk_done(desc, walk, nbytes - n);
}
if (locked)
- spin_unlock(&ctrblk_lock);
+ mutex_unlock(&ctrblk_lock);
/*
* final block may be < AES_BLOCK_SIZE, copy only nbytes
*/
@@ -826,19 +826,45 @@
return 0;
}
-static void gcm_sg_walk_start(struct gcm_sg_walk *gw, struct scatterlist *sg,
- unsigned int len)
+static void gcm_walk_start(struct gcm_sg_walk *gw, struct scatterlist *sg,
+ unsigned int len)
{
memset(gw, 0, sizeof(*gw));
gw->walk_bytes_remain = len;
scatterwalk_start(&gw->walk, sg);
}
-static int gcm_sg_walk_go(struct gcm_sg_walk *gw, unsigned int minbytesneeded)
+static inline unsigned int _gcm_sg_clamp_and_map(struct gcm_sg_walk *gw)
+{
+ struct scatterlist *nextsg;
+
+ gw->walk_bytes = scatterwalk_clamp(&gw->walk, gw->walk_bytes_remain);
+ while (!gw->walk_bytes) {
+ nextsg = sg_next(gw->walk.sg);
+ if (!nextsg)
+ return 0;
+ scatterwalk_start(&gw->walk, nextsg);
+ gw->walk_bytes = scatterwalk_clamp(&gw->walk,
+ gw->walk_bytes_remain);
+ }
+ gw->walk_ptr = scatterwalk_map(&gw->walk);
+ return gw->walk_bytes;
+}
+
+static inline void _gcm_sg_unmap_and_advance(struct gcm_sg_walk *gw,
+ unsigned int nbytes)
+{
+ gw->walk_bytes_remain -= nbytes;
+ scatterwalk_unmap(&gw->walk);
+ scatterwalk_advance(&gw->walk, nbytes);
+ scatterwalk_done(&gw->walk, 0, gw->walk_bytes_remain);
+ gw->walk_ptr = NULL;
+}
+
+static int gcm_in_walk_go(struct gcm_sg_walk *gw, unsigned int minbytesneeded)
{
int n;
- /* minbytesneeded <= AES_BLOCK_SIZE */
if (gw->buf_bytes && gw->buf_bytes >= minbytesneeded) {
gw->ptr = gw->buf;
gw->nbytes = gw->buf_bytes;
@@ -851,13 +877,11 @@
goto out;
}
- gw->walk_bytes = scatterwalk_clamp(&gw->walk, gw->walk_bytes_remain);
- if (!gw->walk_bytes) {
- scatterwalk_start(&gw->walk, sg_next(gw->walk.sg));
- gw->walk_bytes = scatterwalk_clamp(&gw->walk,
- gw->walk_bytes_remain);
+ if (!_gcm_sg_clamp_and_map(gw)) {
+ gw->ptr = NULL;
+ gw->nbytes = 0;
+ goto out;
}
- gw->walk_ptr = scatterwalk_map(&gw->walk);
if (!gw->buf_bytes && gw->walk_bytes >= minbytesneeded) {
gw->ptr = gw->walk_ptr;
@@ -869,51 +893,90 @@
n = min(gw->walk_bytes, AES_BLOCK_SIZE - gw->buf_bytes);
memcpy(gw->buf + gw->buf_bytes, gw->walk_ptr, n);
gw->buf_bytes += n;
- gw->walk_bytes_remain -= n;
- scatterwalk_unmap(&gw->walk);
- scatterwalk_advance(&gw->walk, n);
- scatterwalk_done(&gw->walk, 0, gw->walk_bytes_remain);
-
+ _gcm_sg_unmap_and_advance(gw, n);
if (gw->buf_bytes >= minbytesneeded) {
gw->ptr = gw->buf;
gw->nbytes = gw->buf_bytes;
goto out;
}
-
- gw->walk_bytes = scatterwalk_clamp(&gw->walk,
- gw->walk_bytes_remain);
- if (!gw->walk_bytes) {
- scatterwalk_start(&gw->walk, sg_next(gw->walk.sg));
- gw->walk_bytes = scatterwalk_clamp(&gw->walk,
- gw->walk_bytes_remain);
+ if (!_gcm_sg_clamp_and_map(gw)) {
+ gw->ptr = NULL;
+ gw->nbytes = 0;
+ goto out;
}
- gw->walk_ptr = scatterwalk_map(&gw->walk);
}
out:
return gw->nbytes;
}
-static void gcm_sg_walk_done(struct gcm_sg_walk *gw, unsigned int bytesdone)
+static int gcm_out_walk_go(struct gcm_sg_walk *gw, unsigned int minbytesneeded)
{
- int n;
+ if (gw->walk_bytes_remain == 0) {
+ gw->ptr = NULL;
+ gw->nbytes = 0;
+ goto out;
+ }
+ if (!_gcm_sg_clamp_and_map(gw)) {
+ gw->ptr = NULL;
+ gw->nbytes = 0;
+ goto out;
+ }
+
+ if (gw->walk_bytes >= minbytesneeded) {
+ gw->ptr = gw->walk_ptr;
+ gw->nbytes = gw->walk_bytes;
+ goto out;
+ }
+
+ scatterwalk_unmap(&gw->walk);
+ gw->walk_ptr = NULL;
+
+ gw->ptr = gw->buf;
+ gw->nbytes = sizeof(gw->buf);
+
+out:
+ return gw->nbytes;
+}
+
+static int gcm_in_walk_done(struct gcm_sg_walk *gw, unsigned int bytesdone)
+{
if (gw->ptr == NULL)
- return;
+ return 0;
if (gw->ptr == gw->buf) {
- n = gw->buf_bytes - bytesdone;
+ int n = gw->buf_bytes - bytesdone;
if (n > 0) {
memmove(gw->buf, gw->buf + bytesdone, n);
- gw->buf_bytes -= n;
+ gw->buf_bytes = n;
} else
gw->buf_bytes = 0;
- } else {
- gw->walk_bytes_remain -= bytesdone;
- scatterwalk_unmap(&gw->walk);
- scatterwalk_advance(&gw->walk, bytesdone);
- scatterwalk_done(&gw->walk, 0, gw->walk_bytes_remain);
- }
+ } else
+ _gcm_sg_unmap_and_advance(gw, bytesdone);
+
+ return bytesdone;
+}
+
+static int gcm_out_walk_done(struct gcm_sg_walk *gw, unsigned int bytesdone)
+{
+ int i, n;
+
+ if (gw->ptr == NULL)
+ return 0;
+
+ if (gw->ptr == gw->buf) {
+ for (i = 0; i < bytesdone; i += n) {
+ if (!_gcm_sg_clamp_and_map(gw))
+ return i;
+ n = min(gw->walk_bytes, bytesdone - i);
+ memcpy(gw->walk_ptr, gw->buf + i, n);
+ _gcm_sg_unmap_and_advance(gw, n);
+ }
+ } else
+ _gcm_sg_unmap_and_advance(gw, bytesdone);
+
+ return bytesdone;
}
static int gcm_aes_crypt(struct aead_request *req, unsigned int flags)
@@ -926,7 +989,7 @@
unsigned int pclen = req->cryptlen;
int ret = 0;
- unsigned int len, in_bytes, out_bytes,
+ unsigned int n, len, in_bytes, out_bytes,
min_bytes, bytes, aad_bytes, pc_bytes;
struct gcm_sg_walk gw_in, gw_out;
u8 tag[GHASH_DIGEST_SIZE];
@@ -963,14 +1026,14 @@
*(u32 *)(param.j0 + ivsize) = 1;
memcpy(param.k, ctx->key, ctx->key_len);
- gcm_sg_walk_start(&gw_in, req->src, len);
- gcm_sg_walk_start(&gw_out, req->dst, len);
+ gcm_walk_start(&gw_in, req->src, len);
+ gcm_walk_start(&gw_out, req->dst, len);
do {
min_bytes = min_t(unsigned int,
aadlen > 0 ? aadlen : pclen, AES_BLOCK_SIZE);
- in_bytes = gcm_sg_walk_go(&gw_in, min_bytes);
- out_bytes = gcm_sg_walk_go(&gw_out, min_bytes);
+ in_bytes = gcm_in_walk_go(&gw_in, min_bytes);
+ out_bytes = gcm_out_walk_go(&gw_out, min_bytes);
bytes = min(in_bytes, out_bytes);
if (aadlen + pclen <= bytes) {
@@ -997,8 +1060,11 @@
gw_in.ptr + aad_bytes, pc_bytes,
gw_in.ptr, aad_bytes);
- gcm_sg_walk_done(&gw_in, aad_bytes + pc_bytes);
- gcm_sg_walk_done(&gw_out, aad_bytes + pc_bytes);
+ n = aad_bytes + pc_bytes;
+ if (gcm_in_walk_done(&gw_in, n) != n)
+ return -ENOMEM;
+ if (gcm_out_walk_done(&gw_out, n) != n)
+ return -ENOMEM;
aadlen -= aad_bytes;
pclen -= pc_bytes;
} while (aadlen + pclen > 0);
diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
index 1f9ab24..374b42f 100644
--- a/arch/s390/crypto/des_s390.c
+++ b/arch/s390/crypto/des_s390.c
@@ -14,6 +14,7 @@
#include <linux/cpufeature.h>
#include <linux/crypto.h>
#include <linux/fips.h>
+#include <linux/mutex.h>
#include <crypto/algapi.h>
#include <crypto/des.h>
#include <asm/cpacf.h>
@@ -21,7 +22,7 @@
#define DES3_KEY_SIZE (3 * DES_KEY_SIZE)
static u8 *ctrblk;
-static DEFINE_SPINLOCK(ctrblk_lock);
+static DEFINE_MUTEX(ctrblk_lock);
static cpacf_mask_t km_functions, kmc_functions, kmctr_functions;
@@ -374,7 +375,7 @@
unsigned int n, nbytes;
int ret, locked;
- locked = spin_trylock(&ctrblk_lock);
+ locked = mutex_trylock(&ctrblk_lock);
ret = blkcipher_walk_virt_block(desc, walk, DES_BLOCK_SIZE);
while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
@@ -391,7 +392,7 @@
ret = blkcipher_walk_done(desc, walk, nbytes - n);
}
if (locked)
- spin_unlock(&ctrblk_lock);
+ mutex_unlock(&ctrblk_lock);
/* final block may be < DES_BLOCK_SIZE, copy only nbytes */
if (nbytes) {
cpacf_kmctr(fc, ctx->key, buf, walk->src.virt.addr,
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h
index e94a0a2..aea32dd 100644
--- a/arch/s390/include/asm/ap.h
+++ b/arch/s390/include/asm/ap.h
@@ -160,8 +160,8 @@
unsigned char Nd; /* max # of Domains - 1 */
unsigned char _reserved3[10];
unsigned int apm[8]; /* AP ID mask */
- unsigned int aqm[8]; /* AP queue mask */
- unsigned int adm[8]; /* AP domain mask */
+ unsigned int aqm[8]; /* AP (usage) queue mask */
+ unsigned int adm[8]; /* AP (control) domain mask */
unsigned char _reserved4[16];
} __aligned(8);
diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h
index 2769675..e3d53eb 100644
--- a/arch/s390/include/asm/cpacf.h
+++ b/arch/s390/include/asm/cpacf.h
@@ -178,7 +178,7 @@
: "cc");
}
-static inline int __cpacf_check_opcode(unsigned int opcode)
+static __always_inline int __cpacf_check_opcode(unsigned int opcode)
{
switch (opcode) {
case CPACF_KMAC:
@@ -218,7 +218,7 @@
return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
}
-static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
+static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func)
{
cpacf_mask_t mask;
diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index 3ec52a0..5035917 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -70,6 +70,17 @@
struct clp_fh_list_entry fh_list[CLP_FH_LIST_NR_ENTRIES];
} __packed;
+struct mio_info {
+ u32 valid : 6;
+ u32 : 26;
+ u32 : 32;
+ struct {
+ u64 wb;
+ u64 wt;
+ } addr[PCI_BAR_COUNT];
+ u32 reserved[6];
+} __packed;
+
/* Query PCI function request */
struct clp_req_query_pci {
struct clp_req_hdr hdr;
@@ -100,14 +111,7 @@
u32 uid; /* user defined id */
u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */
u32 reserved2[16];
- u32 mio_valid : 6;
- u32 : 26;
- u32 : 32;
- struct {
- u64 wb;
- u64 wt;
- } addr[PCI_BAR_COUNT];
- u32 reserved3[6];
+ struct mio_info mio;
} __packed;
/* Query PCI function group request */
@@ -155,8 +159,9 @@
struct clp_rsp_set_pci {
struct clp_rsp_hdr hdr;
u32 fh; /* function handle */
- u32 reserved3;
- u64 reserved4;
+ u32 reserved1;
+ u64 reserved2;
+ struct mio_info mio;
} __packed;
/* Combined request/response block structures used by clp insn */
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index e5e8eb2..28ebd64 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -539,6 +539,7 @@
break;
case KVM_CAP_NR_VCPUS:
case KVM_CAP_MAX_VCPUS:
+ case KVM_CAP_MAX_VCPU_ID:
r = KVM_S390_BSCA_CPU_SLOTS;
if (!kvm_s390_use_sca_entries())
r = KVM_MAX_VCPUS;
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index c220399..91ce03f 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -85,7 +85,7 @@
* Find out which address space caused the exception.
* Access register mode is impossible, ignore space == 3.
*/
-static inline enum fault_type get_fault_type(struct pt_regs *regs)
+static enum fault_type get_fault_type(struct pt_regs *regs)
{
unsigned long trans_exc_code;
@@ -211,6 +211,8 @@
asce = S390_lowcore.kernel_asce;
pr_cont("kernel ");
break;
+ default:
+ unreachable();
}
pr_cont("ASCE.\n");
dump_pagetable(asce, regs->int_parm_long & __FAIL_ADDR_MASK);
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 0ebb7c4..86ca7f8 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -528,7 +528,10 @@
if (zdev->bars[i].val & 4)
flags |= IORESOURCE_MEM_64;
- addr = ZPCI_ADDR(entry);
+ if (static_branch_likely(&have_mio))
+ addr = (unsigned long) zdev->bars[i].mio_wb;
+ else
+ addr = ZPCI_ADDR(entry);
size = 1UL << zdev->bars[i].size;
res = __alloc_res(zdev, addr, size, flags);
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 3a36b07..d03631d 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -165,11 +165,11 @@
}
zdev->mio_capable = response->mio_addr_avail;
for (i = 0; i < PCI_BAR_COUNT; i++) {
- if (!(response->mio_valid & (1 << (PCI_BAR_COUNT - i - 1))))
+ if (!(response->mio.valid & (1 << (PCI_BAR_COUNT - i - 1))))
continue;
- zdev->bars[i].mio_wb = (void __iomem *) response->addr[i].wb;
- zdev->bars[i].mio_wt = (void __iomem *) response->addr[i].wt;
+ zdev->bars[i].mio_wb = (void __iomem *) response->mio.addr[i].wb;
+ zdev->bars[i].mio_wt = (void __iomem *) response->mio.addr[i].wt;
}
return 0;
}
diff --git a/arch/x86/kernel/ima_arch.c b/arch/x86/kernel/ima_arch.c
index 85de790..64b973f 100644
--- a/arch/x86/kernel/ima_arch.c
+++ b/arch/x86/kernel/ima_arch.c
@@ -18,6 +18,11 @@
size = sizeof(secboot);
+ if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+ pr_info("ima: secureboot mode unknown, no efi\n");
+ return efi_secureboot_mode_unknown;
+ }
+
/* Get variable contents into buffer */
status = efi.get_variable(efi_SecureBoot_name, &efi_variable_guid,
NULL, &size, &secboot);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index acb179f..83aefd7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3122,6 +3122,9 @@
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
break;
+ case KVM_CAP_MAX_VCPU_ID:
+ r = KVM_MAX_VCPU_ID;
+ break;
case KVM_CAP_PV_MMU: /* obsolete */
r = 0;
break;
diff --git a/block/blk-core.c b/block/blk-core.c
index 1bf83a0..ee1b35f 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -282,35 +282,6 @@
}
EXPORT_SYMBOL_GPL(blk_set_queue_dying);
-/* Unconfigure the I/O scheduler and dissociate from the cgroup controller. */
-void blk_exit_queue(struct request_queue *q)
-{
- /*
- * Since the I/O scheduler exit code may access cgroup information,
- * perform I/O scheduler exit before disassociating from the block
- * cgroup controller.
- */
- if (q->elevator) {
- ioc_clear_queue(q);
- elevator_exit(q, q->elevator);
- q->elevator = NULL;
- }
-
- /*
- * Remove all references to @q from the block cgroup controller before
- * restoring @q->queue_lock to avoid that restoring this pointer causes
- * e.g. blkcg_print_blkgs() to crash.
- */
- blkcg_exit_queue(q);
-
- /*
- * Since the cgroup code may dereference the @q->backing_dev_info
- * pointer, only decrease its reference count after having removed the
- * association with the block cgroup controller.
- */
- bdi_put(q->backing_dev_info);
-}
-
/**
* blk_cleanup_queue - shutdown a request queue
* @q: request queue to shutdown
@@ -346,14 +317,6 @@
del_timer_sync(&q->backing_dev_info->laptop_mode_wb_timer);
blk_sync_queue(q);
- /*
- * I/O scheduler exit is only safe after the sysfs scheduler attribute
- * has been removed.
- */
- WARN_ON_ONCE(q->kobj.state_in_sysfs);
-
- blk_exit_queue(q);
-
if (queue_is_mq(q))
blk_mq_exit_queue(q);
@@ -994,22 +957,8 @@
* yet.
*/
struct bio_list bio_list_on_stack[2];
- blk_mq_req_flags_t flags = 0;
- struct request_queue *q = bio->bi_disk->queue;
blk_qc_t ret = BLK_QC_T_NONE;
- if (bio->bi_opf & REQ_NOWAIT)
- flags = BLK_MQ_REQ_NOWAIT;
- if (bio_flagged(bio, BIO_QUEUE_ENTERED))
- blk_queue_enter_live(q);
- else if (blk_queue_enter(q, flags) < 0) {
- if (!blk_queue_dying(q) && (bio->bi_opf & REQ_NOWAIT))
- bio_wouldblock_error(bio);
- else
- bio_io_error(bio);
- return ret;
- }
-
if (!generic_make_request_checks(bio))
goto out;
@@ -1046,22 +995,11 @@
bio_list_init(&bio_list_on_stack[0]);
current->bio_list = bio_list_on_stack;
do {
- bool enter_succeeded = true;
+ struct request_queue *q = bio->bi_disk->queue;
+ blk_mq_req_flags_t flags = bio->bi_opf & REQ_NOWAIT ?
+ BLK_MQ_REQ_NOWAIT : 0;
- if (unlikely(q != bio->bi_disk->queue)) {
- if (q)
- blk_queue_exit(q);
- q = bio->bi_disk->queue;
- flags = 0;
- if (bio->bi_opf & REQ_NOWAIT)
- flags = BLK_MQ_REQ_NOWAIT;
- if (blk_queue_enter(q, flags) < 0) {
- enter_succeeded = false;
- q = NULL;
- }
- }
-
- if (enter_succeeded) {
+ if (likely(blk_queue_enter(q, flags) == 0)) {
struct bio_list lower, same;
/* Create a fresh bio_list for all subordinate requests */
@@ -1069,6 +1007,8 @@
bio_list_init(&bio_list_on_stack[0]);
ret = q->make_request_fn(q, bio);
+ blk_queue_exit(q);
+
/* sort new bios into those for a lower level
* and those for the same level
*/
@@ -1095,8 +1035,6 @@
current->bio_list = NULL; /* deactivate */
out:
- if (q)
- blk_queue_exit(q);
return ret;
}
EXPORT_SYMBOL(generic_make_request);
@@ -1200,7 +1138,9 @@
struct request *rq)
{
if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, req_op(rq))) {
- printk(KERN_ERR "%s: over max size limit.\n", __func__);
+ printk(KERN_ERR "%s: over max size limit. (%u > %u)\n",
+ __func__, blk_rq_sectors(rq),
+ blk_queue_get_max_sectors(q, req_op(rq)));
return -EIO;
}
@@ -1212,7 +1152,8 @@
*/
blk_recalc_rq_segments(rq);
if (rq->nr_phys_segments > queue_max_segments(q)) {
- printk(KERN_ERR "%s: over max segments limit.\n", __func__);
+ printk(KERN_ERR "%s: over max segments limit. (%hu > %hu)\n",
+ __func__, rq->nr_phys_segments, queue_max_segments(q));
return -EIO;
}
diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c
index 48bebf0..f945621 100644
--- a/block/blk-mq-cpumap.c
+++ b/block/blk-mq-cpumap.c
@@ -42,8 +42,8 @@
/*
* First do sequential mapping between CPUs and queues.
* In case we still have CPUs to map, and we have some number of
- * threads per cores then map sibling threads to the same queue for
- * performace optimizations.
+ * threads per cores then map sibling threads to the same queue
+ * for performance optimizations.
*/
if (cpu < nr_queues) {
map[cpu] = cpu_to_queue_index(qmap, nr_queues, cpu);
@@ -60,7 +60,11 @@
}
EXPORT_SYMBOL_GPL(blk_mq_map_queues);
-/*
+/**
+ * blk_mq_hw_queue_to_node - Look up the memory node for a hardware queue index
+ * @qmap: CPU to hardware queue map.
+ * @index: hardware queue index.
+ *
* We have no quick way of doing reverse lookups. This is only used at
* queue init time, so runtime isn't important.
*/
diff --git a/block/blk-mq-pci.c b/block/blk-mq-pci.c
index ad4545a..b595a94 100644
--- a/block/blk-mq-pci.c
+++ b/block/blk-mq-pci.c
@@ -13,7 +13,7 @@
/**
* blk_mq_pci_map_queues - provide a default queue mapping for PCI device
- * @set: tagset to provide the mapping for
+ * @qmap: CPU to hardware queue map.
* @pdev: PCI device associated with @set.
* @offset: Offset to use for the pci irq vector
*
diff --git a/block/blk-mq-rdma.c b/block/blk-mq-rdma.c
index cc921e6..14f968e 100644
--- a/block/blk-mq-rdma.c
+++ b/block/blk-mq-rdma.c
@@ -8,8 +8,8 @@
/**
* blk_mq_rdma_map_queues - provide a default queue mapping for rdma device
- * @set: tagset to provide the mapping for
- * @dev: rdma device associated with @set.
+ * @map: CPU to hardware queue map.
+ * @dev: rdma device to provide a mapping for.
* @first_vec: first interrupt vectors to use for queues (usually 0)
*
* This function assumes the rdma device @dev has at least as many available
diff --git a/block/blk-mq-virtio.c b/block/blk-mq-virtio.c
index 75a52c1..4883416 100644
--- a/block/blk-mq-virtio.c
+++ b/block/blk-mq-virtio.c
@@ -11,8 +11,8 @@
/**
* blk_mq_virtio_map_queues - provide a default queue mapping for virtio device
- * @set: tagset to provide the mapping for
- * @vdev: virtio device associated with @set.
+ * @qmap: CPU to hardware queue map.
+ * @vdev: virtio device to provide a mapping for.
* @first_vec: first interrupt vectors to use for queues (usually 0)
*
* This function assumes the virtio device @vdev has at least as many available
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 32b8ad3..ce0f5f4 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2865,7 +2865,7 @@
goto err_exit;
if (blk_mq_alloc_ctxs(q))
- goto err_exit;
+ goto err_poll;
/* init q->mq_kobj and sw queues' kobjects */
blk_mq_sysfs_init(q);
@@ -2929,6 +2929,9 @@
kfree(q->queue_hw_ctx);
err_sys_init:
blk_mq_sysfs_deinit(q);
+err_poll:
+ blk_stat_free_callback(q->poll_cb);
+ q->poll_cb = NULL;
err_exit:
q->mq_ops = NULL;
return ERR_PTR(-ENOMEM);
diff --git a/block/blk-rq-qos.c b/block/blk-rq-qos.c
index 3f55b56..659ccb8 100644
--- a/block/blk-rq-qos.c
+++ b/block/blk-rq-qos.c
@@ -209,9 +209,10 @@
/**
* rq_qos_wait - throttle on a rqw if we need to
- * @private_data - caller provided specific data
- * @acquire_inflight_cb - inc the rqw->inflight counter if we can
- * @cleanup_cb - the callback to cleanup in case we race with a waker
+ * @rqw: rqw to throttle on
+ * @private_data: caller provided specific data
+ * @acquire_inflight_cb: inc the rqw->inflight counter if we can
+ * @cleanup_cb: the callback to cleanup in case we race with a waker
*
* This provides a uniform place for the rq_qos users to do their throttling.
* Since you can end up with a lot of things sleeping at once, this manages the
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index a16a02c..75b5281c 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -840,6 +840,36 @@
kmem_cache_free(blk_requestq_cachep, q);
}
+/* Unconfigure the I/O scheduler and dissociate from the cgroup controller. */
+static void blk_exit_queue(struct request_queue *q)
+{
+ /*
+ * Since the I/O scheduler exit code may access cgroup information,
+ * perform I/O scheduler exit before disassociating from the block
+ * cgroup controller.
+ */
+ if (q->elevator) {
+ ioc_clear_queue(q);
+ elevator_exit(q, q->elevator);
+ q->elevator = NULL;
+ }
+
+ /*
+ * Remove all references to @q from the block cgroup controller before
+ * restoring @q->queue_lock to avoid that restoring this pointer causes
+ * e.g. blkcg_print_blkgs() to crash.
+ */
+ blkcg_exit_queue(q);
+
+ /*
+ * Since the cgroup code may dereference the @q->backing_dev_info
+ * pointer, only decrease its reference count after having removed the
+ * association with the block cgroup controller.
+ */
+ bdi_put(q->backing_dev_info);
+}
+
+
/**
* __blk_release_queue - release a request queue
* @work: pointer to the release_work member of the request queue to be released
@@ -860,23 +890,10 @@
blk_stat_remove_callback(q, q->poll_cb);
blk_stat_free_callback(q->poll_cb);
- if (!blk_queue_dead(q)) {
- /*
- * Last reference was dropped without having called
- * blk_cleanup_queue().
- */
- WARN_ONCE(blk_queue_init_done(q),
- "request queue %p has been registered but blk_cleanup_queue() has not been called for that queue\n",
- q);
- blk_exit_queue(q);
- }
-
- WARN(blk_queue_root_blkg(q),
- "request queue %p is being released but it has not yet been removed from the blkcg controller\n",
- q);
-
blk_free_queue_stats(q->stats);
+ blk_exit_queue(q);
+
blk_queue_free_zone_bitmaps(q);
if (queue_is_mq(q))
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 1b97a73..9ea7c0e 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1220,7 +1220,7 @@
struct throtl_grp *this_tg);
/**
* throtl_pending_timer_fn - timer function for service_queue->pending_timer
- * @arg: the throtl_service_queue being serviced
+ * @t: the pending_timer member of the throtl_service_queue being serviced
*
* This timer is armed when a child throtl_grp with active bio's become
* pending and queued on the service_queue's pending_tree and expires when
diff --git a/block/blk.h b/block/blk.h
index e27fd15..91b3581 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -50,7 +50,6 @@
int node, int cmd_size, gfp_t flags);
void blk_free_flush_queue(struct blk_flush_queue *q);
-void blk_exit_queue(struct request_queue *q);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio);
void blk_freeze_queue(struct request_queue *q);
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index b898a1c..785dd58 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -354,6 +354,7 @@
* @dev: device to attach bsg device to
* @name: device to give bsg device
* @job_fn: bsg job handler
+ * @timeout: timeout handler function pointer
* @dd_job_size: size of LLD data needed for each job
*/
struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
diff --git a/block/genhd.c b/block/genhd.c
index ad68266..24654e1 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -532,8 +532,8 @@
}
}
-/**
- * We invalidate devt by assigning NULL pointer for devt in idr.
+/*
+ * We invalidate devt by assigning NULL pointer for devt in idr.
*/
void blk_invalidate_devt(dev_t devt)
{
diff --git a/block/partitions/ldm.c b/block/partitions/ldm.c
index 6db573f..fe5d970 100644
--- a/block/partitions/ldm.c
+++ b/block/partitions/ldm.c
@@ -19,7 +19,7 @@
#include "check.h"
#include "msdos.h"
-/**
+/*
* ldm_debug/info/error/crit - Output an error message
* @f: A printf format string containing the message
* @...: Variables to substitute into @f
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index adc8979..e54956a 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -944,8 +944,8 @@
u32 sys_target = acpi_target_system_state();
int ret, state;
- if (!pm_runtime_suspended(dev) || !adev ||
- device_may_wakeup(dev) != !!adev->wakeup.prepare_count)
+ if (!pm_runtime_suspended(dev) || !adev || (adev->wakeup.flags.valid &&
+ device_may_wakeup(dev) != !!adev->wakeup.prepare_count))
return true;
if (sys_target == ACPI_STATE_S0)
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index e52f123..a34decc 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -1132,15 +1132,19 @@
nosigcheck = true;
}
-static int acpi_hibernation_begin(void)
+static int acpi_hibernation_begin(pm_message_t stage)
{
- int error;
+ if (!nvs_nosave) {
+ int error = suspend_nvs_alloc();
+ if (error)
+ return error;
+ }
- error = nvs_nosave ? 0 : suspend_nvs_alloc();
- if (!error)
- acpi_pm_start(ACPI_STATE_S4);
+ if (stage.event == PM_EVENT_HIBERNATE)
+ pm_set_suspend_via_firmware();
- return error;
+ acpi_pm_start(ACPI_STATE_S4);
+ return 0;
}
static int acpi_hibernation_enter(void)
@@ -1200,7 +1204,7 @@
* function is used if the pre-ACPI 2.0 suspend ordering has been
* requested.
*/
-static int acpi_hibernation_begin_old(void)
+static int acpi_hibernation_begin_old(pm_message_t stage)
{
int error;
/*
@@ -1211,16 +1215,21 @@
acpi_sleep_tts_switch(ACPI_STATE_S4);
error = acpi_sleep_prepare(ACPI_STATE_S4);
+ if (error)
+ return error;
- if (!error) {
- if (!nvs_nosave)
- error = suspend_nvs_alloc();
- if (!error) {
- acpi_target_sleep_state = ACPI_STATE_S4;
- acpi_scan_lock_acquire();
- }
+ if (!nvs_nosave) {
+ error = suspend_nvs_alloc();
+ if (error)
+ return error;
}
- return error;
+
+ if (stage.event == PM_EVENT_HIBERNATE)
+ pm_set_suspend_via_firmware();
+
+ acpi_target_sleep_state = ACPI_STATE_S4;
+ acpi_scan_lock_acquire();
+ return 0;
}
/*
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 102d795..f11b7dc 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -945,9 +945,20 @@
if (!file)
goto out;
+ /*
+ * If we don't hold exclusive handle for the device, upgrade to it
+ * here to avoid changing device under exclusive owner.
+ */
+ if (!(mode & FMODE_EXCL)) {
+ bdgrab(bdev);
+ error = blkdev_get(bdev, mode | FMODE_EXCL, loop_set_fd);
+ if (error)
+ goto out_putf;
+ }
+
error = mutex_lock_killable(&loop_ctl_mutex);
if (error)
- goto out_putf;
+ goto out_bdev;
error = -EBUSY;
if (lo->lo_state != Lo_unbound)
@@ -1012,10 +1023,15 @@
mutex_unlock(&loop_ctl_mutex);
if (partscan)
loop_reread_partitions(lo, bdev);
+ if (!(mode & FMODE_EXCL))
+ blkdev_put(bdev, mode | FMODE_EXCL);
return 0;
out_unlock:
mutex_unlock(&loop_ctl_mutex);
+out_bdev:
+ if (!(mode & FMODE_EXCL))
+ blkdev_put(bdev, mode | FMODE_EXCL);
out_putf:
fput(file);
out:
diff --git a/drivers/i2c/busses/i2c-mlxcpld.c b/drivers/i2c/busses/i2c-mlxcpld.c
index 745ed43..2fd717d 100644
--- a/drivers/i2c/busses/i2c-mlxcpld.c
+++ b/drivers/i2c/busses/i2c-mlxcpld.c
@@ -503,6 +503,7 @@
platform_set_drvdata(pdev, priv);
priv->dev = &pdev->dev;
+ priv->base_addr = MLXPLAT_CPLD_LPC_I2C_BASE_ADDR;
/* Register with i2c layer */
mlxcpld_i2c_adapter.timeout = usecs_to_jiffies(MLXCPLD_I2C_XFER_TO);
@@ -518,7 +519,6 @@
mlxcpld_i2c_adapter.nr = pdev->id;
priv->adap = mlxcpld_i2c_adapter;
priv->adap.dev.parent = &pdev->dev;
- priv->base_addr = MLXPLAT_CPLD_LPC_I2C_BASE_ADDR;
i2c_set_adapdata(&priv->adap, priv);
err = i2c_add_numbered_adapter(&priv->adap);
diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c
index f14d4b3..f724c8e 100644
--- a/drivers/i2c/busses/i2c-synquacer.c
+++ b/drivers/i2c/busses/i2c-synquacer.c
@@ -351,7 +351,7 @@
/* wait 2 clock periods to ensure the stop has been through the bus */
udelay(DIV_ROUND_UP(2 * 1000, i2c->speed_khz));
- return 0;
+ return ret;
}
static irqreturn_t synquacer_i2c_isr(int irq, void *dev_id)
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index e83bf56..2ea4585 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -275,6 +275,7 @@
msgs[i].len < 1 || msgs[i].buf[0] < 1 ||
msgs[i].len < msgs[i].buf[0] +
I2C_SMBUS_BLOCK_MAX) {
+ i++;
res = -EINVAL;
break;
}
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a209199..09b8ff0 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3034,7 +3034,8 @@
{
struct pci_dev *pdev = NULL;
struct dmar_drhd_unit *drhd;
- struct intel_iommu *iommu;
+ /* To avoid a -Wunused-but-set-variable warning. */
+ struct intel_iommu *iommu __maybe_unused;
struct device *dev;
int i;
int ret = 0;
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index e9ae7f8..e3da7c0 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -164,11 +164,6 @@
unsigned long *delay_on,
unsigned long *delay_off)
{
- /*
- * If "set brightness to 0" is pending in workqueue, we don't
- * want that to be reordered after blink_set()
- */
- flush_work(&led_cdev->set_brightness_work);
if (!test_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags) &&
led_cdev->blink_set &&
!led_cdev->blink_set(led_cdev, delay_on, delay_off))
diff --git a/drivers/leds/trigger/ledtrig-timer.c b/drivers/leds/trigger/ledtrig-timer.c
index ca898c1..427fc3c 100644
--- a/drivers/leds/trigger/ledtrig-timer.c
+++ b/drivers/leds/trigger/ledtrig-timer.c
@@ -113,6 +113,11 @@
led_cdev->flags &= ~LED_INIT_DEFAULT_TRIGGER;
}
+ /*
+ * If "set brightness to 0" is pending in workqueue, we don't
+ * want that to be reordered after blink_set()
+ */
+ flush_work(&led_cdev->set_brightness_work);
led_blink_set(led_cdev, &led_cdev->blink_delay_on,
&led_cdev->blink_delay_off);
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index c5e1a09..1897847 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -733,7 +733,8 @@
if (!adev || !acpi_device_power_manageable(adev))
return false;
- if (device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count)
+ if (adev->wakeup.flags.valid &&
+ device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count)
return true;
if (acpi_target_system_state() == ACPI_STATE_S0)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index cae630f..5eadbc3 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -734,6 +734,8 @@
struct pci_dev *pci_dev = to_pci_dev(dev);
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ pci_dev->skip_bus_pm = false;
+
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend(dev, PMSG_SUSPEND);
@@ -827,7 +829,20 @@
}
}
- if (!pci_dev->state_saved) {
+ if (pci_dev->skip_bus_pm) {
+ /*
+ * The function is running for the second time in a row without
+ * going through full resume, which is possible only during
+ * suspend-to-idle in a spurious wakeup case. Moreover, the
+ * device was originally left in D0, so its power state should
+ * not be changed here and the device register values saved
+ * originally should be restored on resume again.
+ */
+ pci_dev->state_saved = true;
+ } else if (pci_dev->state_saved) {
+ if (pci_dev->current_state == PCI_D0)
+ pci_dev->skip_bus_pm = true;
+ } else {
pci_save_state(pci_dev);
if (pci_power_manageable(pci_dev))
pci_prepare_to_sleep(pci_dev);
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index cc30e4f..b9fc502 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -254,19 +254,37 @@
}
/*
- * ap_test_config_domain(): Test, whether an AP usage domain is configured.
+ * ap_test_config_usage_domain(): Test, whether an AP usage domain
+ * is configured.
* @domain AP usage domain ID
*
* Returns 0 if the usage domain is not configured
* 1 if the usage domain is configured or
* if the configuration information is not available
*/
-static inline int ap_test_config_domain(unsigned int domain)
+int ap_test_config_usage_domain(unsigned int domain)
{
if (!ap_configuration) /* QCI not supported */
return domain < 16;
return ap_test_config(ap_configuration->aqm, domain);
}
+EXPORT_SYMBOL(ap_test_config_usage_domain);
+
+/*
+ * ap_test_config_ctrl_domain(): Test, whether an AP control domain
+ * is configured.
+ * @domain AP control domain ID
+ *
+ * Returns 1 if the control domain is configured
+ * 0 in all other cases
+ */
+int ap_test_config_ctrl_domain(unsigned int domain)
+{
+ if (!ap_configuration) /* QCI not supported */
+ return 0;
+ return ap_test_config(ap_configuration->adm, domain);
+}
+EXPORT_SYMBOL(ap_test_config_ctrl_domain);
/**
* ap_query_queue(): Check if an AP queue is available.
@@ -1267,7 +1285,7 @@
best_domain = -1;
max_count = 0;
for (i = 0; i < AP_DOMAINS; i++) {
- if (!ap_test_config_domain(i) ||
+ if (!ap_test_config_usage_domain(i) ||
!test_bit_inv(i, ap_perms.aqm))
continue;
count = 0;
@@ -1442,7 +1460,7 @@
(void *)(long) qid,
__match_queue_device_with_qid);
aq = dev ? to_ap_queue(dev) : NULL;
- if (!ap_test_config_domain(dom)) {
+ if (!ap_test_config_usage_domain(dom)) {
if (dev) {
/* Queue device exists but has been
* removed from configuration.
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 15a98a6..6f3cf37 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -251,6 +251,9 @@
void ap_request_timeout(struct timer_list *t);
void ap_bus_force_rescan(void);
+int ap_test_config_usage_domain(unsigned int domain);
+int ap_test_config_ctrl_domain(unsigned int domain);
+
void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *ap_msg);
struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type);
void ap_queue_prepare_remove(struct ap_queue *aq);
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 852b8c2..1058b4b 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -822,7 +822,7 @@
struct ap_message ap_msg;
unsigned int weight, pref_weight;
unsigned int func_code;
- unsigned short *domain;
+ unsigned short *domain, tdom;
int qid = 0, rc = -ENODEV;
struct module *mod;
@@ -834,6 +834,17 @@
if (rc)
goto out;
+ /*
+ * If a valid target domain is set and this domain is NOT a usage
+ * domain but a control only domain, use the default domain as target.
+ */
+ tdom = *domain;
+ if (tdom >= 0 && tdom < AP_DOMAINS &&
+ !ap_test_config_usage_domain(tdom) &&
+ ap_test_config_ctrl_domain(tdom) &&
+ ap_domain_index >= 0)
+ tdom = ap_domain_index;
+
pref_zc = NULL;
pref_zq = NULL;
spin_lock(&zcrypt_list_lock);
@@ -856,8 +867,8 @@
/* check if device is online and eligible */
if (!zq->online ||
!zq->ops->send_cprb ||
- ((*domain != (unsigned short) AUTOSELECT) &&
- (*domain != AP_QID_QUEUE(zq->queue->qid))))
+ (tdom != (unsigned short) AUTOSELECT &&
+ tdom != AP_QID_QUEUE(zq->queue->qid)))
continue;
/* check if device node has admission for this queue */
if (!zcrypt_check_queue(perms,
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index c6acca5..31e8a72 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -167,6 +167,7 @@
extern struct mutex zfcp_sysfs_port_units_mutex;
extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
extern struct device_attribute *zfcp_sysfs_shost_attrs[];
+bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port);
/* zfcp_unit.c */
extern int zfcp_unit_add(struct zfcp_port *, u64);
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 221d0df..e9ded2be 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -129,6 +129,15 @@
zfcp_sdev->erp_action.port = port;
+ mutex_lock(&zfcp_sysfs_port_units_mutex);
+ if (zfcp_sysfs_port_is_removing(port)) {
+ /* port is already gone */
+ mutex_unlock(&zfcp_sysfs_port_units_mutex);
+ put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
+ return -ENXIO;
+ }
+ mutex_unlock(&zfcp_sysfs_port_units_mutex);
+
unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
if (unit)
put_device(&unit->dev);
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c
index b277be6..af197e2 100644
--- a/drivers/s390/scsi/zfcp_sysfs.c
+++ b/drivers/s390/scsi/zfcp_sysfs.c
@@ -235,6 +235,53 @@
DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
+static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port)
+{
+ lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
+ atomic_set(&port->units, -1);
+}
+
+bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port)
+{
+ lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
+ return atomic_read(&port->units) == -1;
+}
+
+static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port)
+{
+ struct zfcp_adapter *const adapter = port->adapter;
+ unsigned long flags;
+ struct scsi_device *sdev;
+ bool in_use = true;
+
+ mutex_lock(&zfcp_sysfs_port_units_mutex);
+ if (atomic_read(&port->units) > 0)
+ goto unlock_port_units_mutex; /* zfcp_unit(s) under port */
+
+ spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
+ __shost_for_each_device(sdev, adapter->scsi_host) {
+ const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
+
+ if (sdev->sdev_state == SDEV_DEL ||
+ sdev->sdev_state == SDEV_CANCEL)
+ continue;
+ if (zsdev->port != port)
+ continue;
+ /* alive scsi_device under port of interest */
+ goto unlock_host_lock;
+ }
+
+ /* port is about to be removed, so no more unit_add or slave_alloc */
+ zfcp_sysfs_port_set_removing(port);
+ in_use = false;
+
+unlock_host_lock:
+ spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
+unlock_port_units_mutex:
+ mutex_unlock(&zfcp_sysfs_port_units_mutex);
+ return in_use;
+}
+
static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -257,15 +304,11 @@
else
retval = 0;
- mutex_lock(&zfcp_sysfs_port_units_mutex);
- if (atomic_read(&port->units) > 0) {
+ if (zfcp_sysfs_port_in_use(port)) {
retval = -EBUSY;
- mutex_unlock(&zfcp_sysfs_port_units_mutex);
+ put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
goto out;
}
- /* port is about to be removed, so no more unit_add */
- atomic_set(&port->units, -1);
- mutex_unlock(&zfcp_sysfs_port_units_mutex);
write_lock_irq(&adapter->port_list_lock);
list_del(&port->list);
diff --git a/drivers/s390/scsi/zfcp_unit.c b/drivers/s390/scsi/zfcp_unit.c
index 1bf0a09..e67bf73 100644
--- a/drivers/s390/scsi/zfcp_unit.c
+++ b/drivers/s390/scsi/zfcp_unit.c
@@ -124,7 +124,7 @@
int retval = 0;
mutex_lock(&zfcp_sysfs_port_units_mutex);
- if (atomic_read(&port->units) == -1) {
+ if (zfcp_sysfs_port_is_removing(port)) {
/* port is already gone */
retval = -ENODEV;
goto out;
@@ -168,8 +168,14 @@
write_lock_irq(&port->unit_list_lock);
list_add_tail(&unit->list, &port->unit_list);
write_unlock_irq(&port->unit_list_lock);
+ /*
+ * lock order: shost->scan_mutex before zfcp_sysfs_port_units_mutex
+ * due to zfcp_unit_scsi_scan() => zfcp_scsi_slave_alloc()
+ */
+ mutex_unlock(&zfcp_sysfs_port_units_mutex);
zfcp_unit_scsi_scan(unit);
+ return retval;
out:
mutex_unlock(&zfcp_sysfs_port_units_mutex);
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index 8b915d4..7d43e01 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -639,6 +639,10 @@
if (ndev->flags & IFF_LOOPBACK) {
ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
+ if (!ndev) {
+ err = -ENETUNREACH;
+ goto rel_neigh;
+ }
mtu = ndev->mtu;
pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
n->dev->name, ndev->name, mtu);
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index a7a4a77..f0066f8 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -1160,10 +1160,8 @@
int r;
kaluad_wq = alloc_workqueue("kaluad", WQ_MEM_RECLAIM, 0);
- if (!kaluad_wq) {
- /* Temporary failure, bypass */
- return SCSI_DH_DEV_TEMP_BUSY;
- }
+ if (!kaluad_wq)
+ return -ENOMEM;
r = scsi_register_device_handler(&alua_dh);
if (r != 0) {
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 83f2fd7..9f7e245 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -1019,6 +1019,8 @@
list_del(&child->dev_list_node);
spin_unlock_irq(&parent->port->dev_list_lock);
sas_put_device(child);
+ sas_port_delete(phy->port);
+ phy->port = NULL;
return NULL;
}
list_add_tail(&child->siblings, &parent->ex_dev.children);
diff --git a/drivers/scsi/libsas/sas_phy.c b/drivers/scsi/libsas/sas_phy.c
index e030e14..b71f5ac 100644
--- a/drivers/scsi/libsas/sas_phy.c
+++ b/drivers/scsi/libsas/sas_phy.c
@@ -35,7 +35,6 @@
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- phy->in_shutdown = 0;
phy->error = 0;
sas_deform_port(phy, 1);
}
@@ -45,7 +44,6 @@
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- phy->in_shutdown = 0;
phy->error = 0;
}
@@ -126,6 +124,7 @@
ret);
} else
pr_notice("phy%d is not enabled, cannot shutdown\n", phy->id);
+ phy->in_shutdown = 0;
}
/* ---------- Phy class registration ---------- */
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index b17761e..d6be4e8f 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -7291,7 +7291,7 @@
else
mask = DMA_BIT_MASK(32);
- rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
+ rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
if (rc) {
dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
goto disable_device;
diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
index 928e8e8..528df88 100644
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -64,20 +64,6 @@
}
}
-bool is_sensor_enabled(struct tsens_priv *priv, u32 hw_id)
-{
- u32 val;
- int ret;
-
- if ((hw_id > (priv->num_sensors - 1)) || (hw_id < 0))
- return -EINVAL;
- ret = regmap_field_read(priv->rf[SENSOR_EN], &val);
- if (ret)
- return ret;
-
- return val & (1 << hw_id);
-}
-
static inline int code_to_degc(u32 adc_code, const struct tsens_sensor *s)
{
int degc, num, den;
diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
index a319283..6f26fad 100644
--- a/drivers/thermal/qcom/tsens-v0_1.c
+++ b/drivers/thermal/qcom/tsens-v0_1.c
@@ -334,7 +334,6 @@
/* CTRL_OFFSET */
[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
- [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13),
/* ----- TM ------ */
/* INTERRUPT ENABLE */
diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
index 1099069..0a4f2b8 100644
--- a/drivers/thermal/qcom/tsens-v2.c
+++ b/drivers/thermal/qcom/tsens-v2.c
@@ -44,7 +44,6 @@
/* CTRL_OFF */
[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
- [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 18),
/* ----- TM ------ */
/* INTERRUPT ENABLE */
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 36b0b52..0627d86 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -85,11 +85,6 @@
struct thermal_zone_device *tzd;
for (i = 0; i < priv->num_sensors; i++) {
- if (!is_sensor_enabled(priv, priv->sensor[i].hw_id)) {
- dev_err(priv->dev, "sensor %d: disabled\n",
- priv->sensor[i].hw_id);
- continue;
- }
priv->sensor[i].priv = priv;
priv->sensor[i].id = i;
tzd = devm_thermal_zone_of_sensor_register(priv->dev, i,
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index eefe384..2fd9499 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -315,7 +315,6 @@
int init_common(struct tsens_priv *priv);
int get_temp_tsens_valid(struct tsens_priv *priv, int i, int *temp);
int get_temp_common(struct tsens_priv *priv, int i, int *temp);
-bool is_sensor_enabled(struct tsens_priv *priv, u32 hw_id);
/* TSENS target */
extern const struct tsens_plat_data data_8960;
diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c
index c7554992..57592a6 100644
--- a/drivers/xen/pvcalls-front.c
+++ b/drivers/xen/pvcalls-front.c
@@ -531,7 +531,6 @@
int pvcalls_front_sendmsg(struct socket *sock, struct msghdr *msg,
size_t len)
{
- struct pvcalls_bedata *bedata;
struct sock_mapping *map;
int sent, tot_sent = 0;
int count = 0, flags;
@@ -543,7 +542,6 @@
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
- bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
mutex_lock(&map->active.out_mutex);
if ((flags & MSG_DONTWAIT) && !pvcalls_front_write_todo(map)) {
@@ -626,7 +624,6 @@
int pvcalls_front_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
int flags)
{
- struct pvcalls_bedata *bedata;
int ret;
struct sock_mapping *map;
@@ -636,7 +633,6 @@
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
- bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
mutex_lock(&map->active.in_mutex);
if (len > XEN_FLEX_RING_SIZE(PVCALLS_RING_ORDER))
diff --git a/drivers/xen/xenbus/xenbus.h b/drivers/xen/xenbus/xenbus.h
index 09298117..d75a238 100644
--- a/drivers/xen/xenbus/xenbus.h
+++ b/drivers/xen/xenbus/xenbus.h
@@ -83,6 +83,7 @@
int num_vecs;
int err;
enum xb_req_state state;
+ bool user_req;
void (*cb)(struct xb_req_data *);
void *par;
};
@@ -133,4 +134,6 @@
int xenbus_dev_request_and_reply(struct xsd_sockmsg *msg, void *par);
void xenbus_dev_queue_reply(struct xb_req_data *req);
+extern unsigned int xb_dev_generation_id;
+
#endif
diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index faf452d..08adc59 100644
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -62,6 +62,8 @@
#include "xenbus.h"
+unsigned int xb_dev_generation_id;
+
/*
* An element of a list of outstanding transactions, for which we're
* still waiting a reply.
@@ -69,6 +71,7 @@
struct xenbus_transaction_holder {
struct list_head list;
struct xenbus_transaction handle;
+ unsigned int generation_id;
};
/*
@@ -441,6 +444,7 @@
rc = -ENOMEM;
goto out;
}
+ trans->generation_id = xb_dev_generation_id;
list_add(&trans->list, &u->transactions);
} else if (msg->hdr.tx_id != 0 &&
!xenbus_get_transaction(u, msg->hdr.tx_id))
@@ -449,6 +453,20 @@
!(msg->hdr.len == 2 &&
(!strcmp(msg->body, "T") || !strcmp(msg->body, "F"))))
return xenbus_command_reply(u, XS_ERROR, "EINVAL");
+ else if (msg_type == XS_TRANSACTION_END) {
+ trans = xenbus_get_transaction(u, msg->hdr.tx_id);
+ if (trans && trans->generation_id != xb_dev_generation_id) {
+ list_del(&trans->list);
+ kfree(trans);
+ if (!strcmp(msg->body, "T"))
+ return xenbus_command_reply(u, XS_ERROR,
+ "EAGAIN");
+ else
+ return xenbus_command_reply(u,
+ XS_TRANSACTION_END,
+ "OK");
+ }
+ }
rc = xenbus_dev_request_and_reply(&msg->hdr, u);
if (rc && trans) {
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
index 49a3874..ddc18da 100644
--- a/drivers/xen/xenbus/xenbus_xs.c
+++ b/drivers/xen/xenbus/xenbus_xs.c
@@ -105,6 +105,7 @@
static void xs_suspend_exit(void)
{
+ xb_dev_generation_id++;
spin_lock(&xs_state_lock);
xs_suspend_active--;
spin_unlock(&xs_state_lock);
@@ -125,7 +126,7 @@
spin_lock(&xs_state_lock);
}
- if (req->type == XS_TRANSACTION_START)
+ if (req->type == XS_TRANSACTION_START && !req->user_req)
xs_state_users++;
xs_state_users++;
rq_id = xs_request_id++;
@@ -140,7 +141,7 @@
spin_lock(&xs_state_lock);
xs_state_users--;
if ((req->type == XS_TRANSACTION_START && req->msg.type == XS_ERROR) ||
- (req->type == XS_TRANSACTION_END &&
+ (req->type == XS_TRANSACTION_END && !req->user_req &&
!WARN_ON_ONCE(req->msg.type == XS_ERROR &&
!strcmp(req->body, "ENOENT"))))
xs_state_users--;
@@ -286,6 +287,7 @@
req->num_vecs = 1;
req->cb = xenbus_dev_queue_reply;
req->par = par;
+ req->user_req = true;
xs_send(req, msg);
@@ -313,6 +315,7 @@
req->vec = iovec;
req->num_vecs = num_vecs;
req->cb = xs_wake_up;
+ req->user_req = false;
msg.req_id = 0;
msg.tx_id = t.id;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index e6886c9..749f598 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1406,20 +1406,27 @@
*/
int revalidate_disk(struct gendisk *disk)
{
- struct block_device *bdev;
int ret = 0;
if (disk->fops->revalidate_disk)
ret = disk->fops->revalidate_disk(disk);
- bdev = bdget_disk(disk, 0);
- if (!bdev)
- return ret;
- mutex_lock(&bdev->bd_mutex);
- check_disk_size_change(disk, bdev, ret == 0);
- bdev->bd_invalidated = 0;
- mutex_unlock(&bdev->bd_mutex);
- bdput(bdev);
+ /*
+ * Hidden disks don't have associated bdev so there's no point in
+ * revalidating it.
+ */
+ if (!(disk->flags & GENHD_FL_HIDDEN)) {
+ struct block_device *bdev = bdget_disk(disk, 0);
+
+ if (!bdev)
+ return ret;
+
+ mutex_lock(&bdev->bd_mutex);
+ check_disk_size_change(disk, bdev, ret == 0);
+ bdev->bd_invalidated = 0;
+ mutex_unlock(&bdev->bd_mutex);
+ bdput(bdev);
+ }
return ret;
}
EXPORT_SYMBOL(revalidate_disk);
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index 85dc89d..e3e1c13 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -132,7 +132,7 @@
return;
hlist_del_init_rcu(&ce->ce_hlist);
- kfree(ce->ce_path);
+ kfree_const(ce->ce_path);
free_tgts(ce);
dfs_cache_count--;
call_rcu(&ce->ce_rcu, free_cache_entry);
@@ -422,7 +422,7 @@
rc = copy_ref_data(refs, numrefs, ce, NULL);
if (rc) {
- kfree(ce->ce_path);
+ kfree_const(ce->ce_path);
kmem_cache_free(dfs_cache_slab, ce);
ce = ERR_PTR(rc);
}
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index ce9a5be..06e27ac 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -3216,7 +3216,9 @@
}
if (rc) {
- for (i = 0; i < nr_pages; i++) {
+ unsigned int nr_page_failed = i;
+
+ for (i = 0; i < nr_page_failed; i++) {
put_page(rdata->pages[i]);
rdata->pages[i] = NULL;
}
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 710ceb8..29b699d 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1054,7 +1054,8 @@
* not supported error. Client should accept it.
*/
cifs_dbg(VFS, "Server does not support validate negotiate\n");
- return 0;
+ rc = 0;
+ goto out_free_inbuf;
} else if (rc != 0) {
cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc);
rc = -EIO;
@@ -2619,10 +2620,12 @@
void
SMB2_ioctl_free(struct smb_rqst *rqst)
{
+ int i;
if (rqst && rqst->rq_iov) {
cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
- if (rqst->rq_iov[1].iov_len)
- kfree(rqst->rq_iov[1].iov_base);
+ for (i = 1; i < rqst->rq_nvec; i++)
+ if (rqst->rq_iov[i].iov_base != smb2_padding)
+ kfree(rqst->rq_iov[i].iov_base);
}
}
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 310f8d1..0fbb486 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2616,7 +2616,7 @@
ret = io_copy_iov(ctx, &iov, arg, i);
if (ret)
- break;
+ goto err;
/*
* Don't impose further limits on the size and buffer
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 9846f7e..7147e4a 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -127,7 +127,7 @@
locks_init_lock(fl);
fl->fl_owner = current->files;
- fl->fl_pid = current->tgid;
+ fl->fl_pid = (pid_t)lock->svid;
fl->fl_flags = FL_POSIX;
fl->fl_type = F_RDLCK; /* as good as anything else */
start = ntohl(*p++);
@@ -269,7 +269,7 @@
memset(lock, 0, sizeof(*lock));
locks_init_lock(&lock->fl);
lock->svid = ~(u32) 0;
- lock->fl.fl_pid = current->tgid;
+ lock->fl.fl_pid = (pid_t)lock->svid;
if (!(p = nlm_decode_cookie(p, &argp->cookie))
|| !(p = xdr_decode_string_inplace(p, &lock->caller,
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index 70154f3..7ed9edf 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -119,7 +119,7 @@
locks_init_lock(fl);
fl->fl_owner = current->files;
- fl->fl_pid = current->tgid;
+ fl->fl_pid = (pid_t)lock->svid;
fl->fl_flags = FL_POSIX;
fl->fl_type = F_RDLCK; /* as good as anything else */
p = xdr_decode_hyper(p, &start);
@@ -266,7 +266,7 @@
memset(lock, 0, sizeof(*lock));
locks_init_lock(&lock->fl);
lock->svid = ~(u32) 0;
- lock->fl.fl_pid = current->tgid;
+ lock->fl.fl_pid = (pid_t)lock->svid;
if (!(p = nlm4_decode_cookie(p, &argp->cookie))
|| !(p = xdr_decode_string_inplace(p, &lock->caller,
diff --git a/fs/ocfs2/filecheck.c b/fs/ocfs2/filecheck.c
index f65f2b2..1906cc9 100644
--- a/fs/ocfs2/filecheck.c
+++ b/fs/ocfs2/filecheck.c
@@ -193,6 +193,7 @@
ret = kobject_init_and_add(&entry->fs_kobj, &ocfs2_ktype_filecheck,
NULL, "filecheck");
if (ret) {
+ kobject_put(&entry->fs_kobj);
kfree(fcheck);
return ret;
}
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 77258d2..11e215d 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -89,6 +89,11 @@
* Enable cpuset controller in v1 cgroup to use v2 behavior.
*/
CGRP_ROOT_CPUSET_V2_MODE = (1 << 4),
+
+ /*
+ * Enable legacy local memory.events.
+ */
+ CGRP_ROOT_MEMORY_LOCAL_EVENTS = (1 << 5),
};
/* cftype->flags */
diff --git a/include/linux/generic-radix-tree.h b/include/linux/generic-radix-tree.h
index 3a91130..02393c0 100644
--- a/include/linux/generic-radix-tree.h
+++ b/include/linux/generic-radix-tree.h
@@ -2,7 +2,7 @@
#define _LINUX_GENERIC_RADIX_TREE_H
/**
- * DOC: Generic radix trees/sparse arrays:
+ * DOC: Generic radix trees/sparse arrays
*
* Very simple and minimalistic, supporting arbitrary size entries up to
* PAGE_SIZE.
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index aa5efd9..d5ceb28 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -54,6 +54,7 @@
#ifdef CONFIG_MEMCG_KMEM
struct list_head list;
int shrinker_id;
+ bool memcg_aware;
#endif
};
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 73fe0a7..edf9e8f 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -737,8 +737,14 @@
static inline void memcg_memory_event(struct mem_cgroup *memcg,
enum memcg_memory_event event)
{
- atomic_long_inc(&memcg->memory_events[event]);
- cgroup_file_notify(&memcg->events_file);
+ do {
+ atomic_long_inc(&memcg->memory_events[event]);
+ cgroup_file_notify(&memcg->events_file);
+
+ if (cgrp_dfl_root.flags & CGRP_ROOT_MEMORY_LOCAL_EVENTS)
+ break;
+ } while ((memcg = parent_mem_cgroup(memcg)) &&
+ !mem_cgroup_is_root(memcg));
}
static inline void memcg_memory_event_mm(struct mm_struct *mm,
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 4a5a84d..dd436da 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -344,6 +344,7 @@
D3cold, not set for devices
powered on/off by the
corresponding bridge */
+ unsigned int skip_bus_pm:1; /* Internal: Skip bus-level PM */
unsigned int ignore_hotplug:1; /* Ignore hotplug events */
unsigned int hotplug_user_indicators:1; /* SlotCtl indicators
controlled exclusively by
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 6b3ea9e..4a2ffd6 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -359,7 +359,7 @@
* platforms which require special recovery actions in that situation.
*/
struct platform_hibernation_ops {
- int (*begin)(void);
+ int (*begin)(pm_message_t stage);
void (*end)(void);
int (*pre_snapshot)(void);
void (*finish)(void);
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 217cec4..426a002 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1810,11 +1810,13 @@
enum cgroup2_param {
Opt_nsdelegate,
+ Opt_memory_localevents,
nr__cgroup2_params
};
static const struct fs_parameter_spec cgroup2_param_specs[] = {
- fsparam_flag ("nsdelegate", Opt_nsdelegate),
+ fsparam_flag("nsdelegate", Opt_nsdelegate),
+ fsparam_flag("memory_localevents", Opt_memory_localevents),
{}
};
@@ -1837,6 +1839,9 @@
case Opt_nsdelegate:
ctx->flags |= CGRP_ROOT_NS_DELEGATE;
return 0;
+ case Opt_memory_localevents:
+ ctx->flags |= CGRP_ROOT_MEMORY_LOCAL_EVENTS;
+ return 0;
}
return -EINVAL;
}
@@ -1848,6 +1853,11 @@
cgrp_dfl_root.flags |= CGRP_ROOT_NS_DELEGATE;
else
cgrp_dfl_root.flags &= ~CGRP_ROOT_NS_DELEGATE;
+
+ if (root_flags & CGRP_ROOT_MEMORY_LOCAL_EVENTS)
+ cgrp_dfl_root.flags |= CGRP_ROOT_MEMORY_LOCAL_EVENTS;
+ else
+ cgrp_dfl_root.flags &= ~CGRP_ROOT_MEMORY_LOCAL_EVENTS;
}
}
@@ -1855,6 +1865,8 @@
{
if (cgrp_dfl_root.flags & CGRP_ROOT_NS_DELEGATE)
seq_puts(seq, ",nsdelegate");
+ if (cgrp_dfl_root.flags & CGRP_ROOT_MEMORY_LOCAL_EVENTS)
+ seq_puts(seq, ",memory_localevents");
return 0;
}
@@ -6325,7 +6337,7 @@
static ssize_t features_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, "nsdelegate\n");
+ return snprintf(buf, PAGE_SIZE, "nsdelegate\nmemory_localevents\n");
}
static struct kobj_attribute cgroup_features_attr = __ATTR_RO(features);
diff --git a/kernel/fork.c b/kernel/fork.c
index b2b87d4..75675b9 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -123,7 +123,7 @@
unsigned long total_forks; /* Handle normal Linux uptimes. */
int nr_threads; /* The idle threads do not count.. */
-int max_threads; /* tunable limit on nr_threads */
+static int max_threads; /* tunable limit on nr_threads */
DEFINE_PER_CPU(unsigned long, process_counts) = 0;
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index c8c272d..9752263 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -129,7 +129,7 @@
static int platform_begin(int platform_mode)
{
return (platform_mode && hibernation_ops) ?
- hibernation_ops->begin() : 0;
+ hibernation_ops->begin(PMSG_FREEZE) : 0;
}
/**
@@ -542,7 +542,7 @@
* hibernation_ops->finish() before saving the image, so we should let
* the firmware know that we're going to enter the sleep state after all
*/
- error = hibernation_ops->begin();
+ error = hibernation_ops->begin(PMSG_HIBERNATE);
if (error)
goto Close;
diff --git a/kernel/signal.c b/kernel/signal.c
index d7b9d14..328a01e 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2485,6 +2485,8 @@
if (signal_group_exit(signal)) {
ksig->info.si_signo = signr = SIGKILL;
sigdelset(¤t->pending.signal, SIGKILL);
+ trace_signal_deliver(SIGKILL, SEND_SIG_NOINFO,
+ &sighand->action[SIGKILL - 1]);
recalc_sigpending();
goto fatal;
}
diff --git a/kernel/sys.c b/kernel/sys.c
index bdbfe8d..2969304 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1882,13 +1882,14 @@
}
/*
+ * Check arithmetic relations of passed addresses.
+ *
* WARNING: we don't require any capability here so be very careful
* in what is allowed for modification from userspace.
*/
-static int validate_prctl_map(struct prctl_mm_map *prctl_map)
+static int validate_prctl_map_addr(struct prctl_mm_map *prctl_map)
{
unsigned long mmap_max_addr = TASK_SIZE;
- struct mm_struct *mm = current->mm;
int error = -EINVAL, i;
static const unsigned char offsets[] = {
@@ -1949,24 +1950,6 @@
prctl_map->start_data))
goto out;
- /*
- * Someone is trying to cheat the auxv vector.
- */
- if (prctl_map->auxv_size) {
- if (!prctl_map->auxv || prctl_map->auxv_size > sizeof(mm->saved_auxv))
- goto out;
- }
-
- /*
- * Finally, make sure the caller has the rights to
- * change /proc/pid/exe link: only local sys admin should
- * be allowed to.
- */
- if (prctl_map->exe_fd != (u32)-1) {
- if (!ns_capable(current_user_ns(), CAP_SYS_ADMIN))
- goto out;
- }
-
error = 0;
out:
return error;
@@ -1993,11 +1976,18 @@
if (copy_from_user(&prctl_map, addr, sizeof(prctl_map)))
return -EFAULT;
- error = validate_prctl_map(&prctl_map);
+ error = validate_prctl_map_addr(&prctl_map);
if (error)
return error;
if (prctl_map.auxv_size) {
+ /*
+ * Someone is trying to cheat the auxv vector.
+ */
+ if (!prctl_map.auxv ||
+ prctl_map.auxv_size > sizeof(mm->saved_auxv))
+ return -EINVAL;
+
memset(user_auxv, 0, sizeof(user_auxv));
if (copy_from_user(user_auxv,
(const void __user *)prctl_map.auxv,
@@ -2010,6 +2000,14 @@
}
if (prctl_map.exe_fd != (u32)-1) {
+ /*
+ * Make sure the caller has the rights to
+ * change /proc/pid/exe link: only local sys admin should
+ * be allowed to.
+ */
+ if (!ns_capable(current_user_ns(), CAP_SYS_ADMIN))
+ return -EINVAL;
+
error = prctl_set_mm_exe_file(mm, prctl_map.exe_fd);
if (error)
return error;
@@ -2097,7 +2095,11 @@
unsigned long arg4, unsigned long arg5)
{
struct mm_struct *mm = current->mm;
- struct prctl_mm_map prctl_map;
+ struct prctl_mm_map prctl_map = {
+ .auxv = NULL,
+ .auxv_size = 0,
+ .exe_fd = -1,
+ };
struct vm_area_struct *vma;
int error;
@@ -2125,9 +2127,15 @@
error = -EINVAL;
- down_write(&mm->mmap_sem);
+ /*
+ * arg_lock protects concurent updates of arg boundaries, we need
+ * mmap_sem for a) concurrent sys_brk, b) finding VMA for addr
+ * validation.
+ */
+ down_read(&mm->mmap_sem);
vma = find_vma(mm, addr);
+ spin_lock(&mm->arg_lock);
prctl_map.start_code = mm->start_code;
prctl_map.end_code = mm->end_code;
prctl_map.start_data = mm->start_data;
@@ -2139,9 +2147,6 @@
prctl_map.arg_end = mm->arg_end;
prctl_map.env_start = mm->env_start;
prctl_map.env_end = mm->env_end;
- prctl_map.auxv = NULL;
- prctl_map.auxv_size = 0;
- prctl_map.exe_fd = -1;
switch (opt) {
case PR_SET_MM_START_CODE:
@@ -2181,7 +2186,7 @@
goto out;
}
- error = validate_prctl_map(&prctl_map);
+ error = validate_prctl_map_addr(&prctl_map);
if (error)
goto out;
@@ -2218,7 +2223,8 @@
error = 0;
out:
- up_write(&mm->mmap_sem);
+ spin_unlock(&mm->arg_lock);
+ up_read(&mm->mmap_sem);
return error;
}
diff --git a/lib/sort.c b/lib/sort.c
index 50855ea..cf408ae 100644
--- a/lib/sort.c
+++ b/lib/sort.c
@@ -43,8 +43,9 @@
/**
* swap_words_32 - swap two elements in 32-bit chunks
- * @a, @b: pointers to the elements
- * @size: element size (must be a multiple of 4)
+ * @a: pointer to the first element to swap
+ * @b: pointer to the second element to swap
+ * @n: element size (must be a multiple of 4)
*
* Exchange the two objects in memory. This exploits base+index addressing,
* which basically all CPUs have, to minimize loop overhead computations.
@@ -65,8 +66,9 @@
/**
* swap_words_64 - swap two elements in 64-bit chunks
- * @a, @b: pointers to the elements
- * @size: element size (must be a multiple of 8)
+ * @a: pointer to the first element to swap
+ * @b: pointer to the second element to swap
+ * @n: element size (must be a multiple of 8)
*
* Exchange the two objects in memory. This exploits base+index
* addressing, which basically all CPUs have, to minimize loop overhead
@@ -100,8 +102,9 @@
/**
* swap_bytes - swap two elements a byte at a time
- * @a, @b: pointers to the elements
- * @size: element size
+ * @a: pointer to the first element to swap
+ * @b: pointer to the second element to swap
+ * @n: element size
*
* This is the fallback if alignment doesn't allow using larger chunks.
*/
diff --git a/mm/compaction.c b/mm/compaction.c
index 9febc8c..9e1b9ac 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1399,7 +1399,7 @@
page = pfn_to_page(highest);
cc->free_pfn = highest;
} else {
- if (cc->direct_compaction) {
+ if (cc->direct_compaction && pfn_valid(min_pfn)) {
page = pfn_to_page(min_pfn);
cc->free_pfn = min_pfn;
}
diff --git a/mm/gup.c b/mm/gup.c
index f173fcb..ddde097 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1042,10 +1042,6 @@
BUG_ON(ret >= nr_pages);
}
- if (!pages)
- /* If it's a prefault don't insist harder */
- return ret;
-
if (ret > 0) {
nr_pages -= ret;
pages_done += ret;
@@ -1061,8 +1057,12 @@
pages_done = ret;
break;
}
- /* VM_FAULT_RETRY triggered, so seek to the faulting offset */
- pages += ret;
+ /*
+ * VM_FAULT_RETRY triggered, so seek to the faulting offset.
+ * For the prefault case (!pages) we only update counts.
+ */
+ if (likely(pages))
+ pages += ret;
start += ret << PAGE_SHIFT;
/*
@@ -1085,7 +1085,8 @@
pages_done++;
if (!nr_pages)
break;
- pages++;
+ if (likely(pages))
+ pages++;
start += PAGE_SIZE;
}
if (lock_dropped && *locked) {
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 36afcf6..242fdc0 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -464,7 +464,7 @@
{
unsigned long redzone_start;
unsigned long redzone_end;
- u8 tag;
+ u8 tag = 0xff;
if (gfpflags_allow_blocking(flags))
quarantine_reduce();
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 0bdf315..e4709fd 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -38,11 +38,7 @@
static inline bool list_lru_memcg_aware(struct list_lru *lru)
{
- /*
- * This needs node 0 to be always present, even
- * in the systems supporting sparse numa ids.
- */
- return !!lru->node[0].memcg_lrus;
+ return lru->memcg_aware;
}
static inline struct list_lru_one *
@@ -452,6 +448,8 @@
{
int i;
+ lru->memcg_aware = memcg_aware;
+
if (!memcg_aware)
return 0;
diff --git a/mm/util.c b/mm/util.c
index 91682a2..9834c4a 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -718,12 +718,12 @@
if (!mm->arg_end)
goto out_mm; /* Shh! No looking before we're done */
- down_read(&mm->mmap_sem);
+ spin_lock(&mm->arg_lock);
arg_start = mm->arg_start;
arg_end = mm->arg_end;
env_start = mm->env_start;
env_end = mm->env_end;
- up_read(&mm->mmap_sem);
+ spin_unlock(&mm->arg_lock);
len = arg_end - arg_start;
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 233af69..7350a12 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -815,7 +815,7 @@
}
/*
- * OK. We roll back and find the fist right sub-tree,
+ * OK. We roll back and find the first right sub-tree,
* that will satisfy the search criteria. It can happen
* only once due to "vstart" restriction.
*/
diff --git a/mm/z3fold.c b/mm/z3fold.c
index 99be52c..985732c 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -190,10 +190,11 @@
static void compact_page_work(struct work_struct *w);
-static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool)
+static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool,
+ gfp_t gfp)
{
struct z3fold_buddy_slots *slots = kmem_cache_alloc(pool->c_handle,
- GFP_KERNEL);
+ gfp);
if (slots) {
memset(slots->slot, 0, sizeof(slots->slot));
@@ -295,10 +296,10 @@
/* Initializes the z3fold header of a newly allocated z3fold page */
static struct z3fold_header *init_z3fold_page(struct page *page,
- struct z3fold_pool *pool)
+ struct z3fold_pool *pool, gfp_t gfp)
{
struct z3fold_header *zhdr = page_address(page);
- struct z3fold_buddy_slots *slots = alloc_slots(pool);
+ struct z3fold_buddy_slots *slots = alloc_slots(pool, gfp);
if (!slots)
return NULL;
@@ -912,7 +913,7 @@
if (!page)
return -ENOMEM;
- zhdr = init_z3fold_page(page, pool);
+ zhdr = init_z3fold_page(page, pool, gfp);
if (!zhdr) {
__free_page(page);
return -ENOMEM;
diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 552d5ef..17f0607 100644
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -150,8 +150,12 @@
void dump_gimple_stmt(pretty_printer *, gimple, int, int);
#endif
+#ifndef __unused
#define __unused __attribute__((__unused__))
+#endif
+#ifndef __visible
#define __visible __attribute__((visibility("default")))
+#endif
#define DECL_NAME_POINTER(node) IDENTIFIER_POINTER(DECL_NAME(node))
#define DECL_NAME_LENGTH(node) IDENTIFIER_LENGTH(DECL_NAME(node))
diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in
index 1d73083..2efbec6 100644
--- a/scripts/gdb/linux/constants.py.in
+++ b/scripts/gdb/linux/constants.py.in
@@ -40,7 +40,8 @@
import gdb
/* linux/clk-provider.h */
-LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
+if IS_BUILTIN(CONFIG_COMMON_CLK):
+ LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
/* linux/fs.h */
LX_VALUE(SB_RDONLY)
diff --git a/scripts/spdxcheck.py b/scripts/spdxcheck.py
index 33df646..6374e07 100755
--- a/scripts/spdxcheck.py
+++ b/scripts/spdxcheck.py
@@ -32,7 +32,8 @@
def read_spdxdata(repo):
# The subdirectories of LICENSES in the kernel source
- license_dirs = [ "preferred", "deprecated", "exceptions", "dual" ]
+ # Note: exceptions needs to be parsed as last directory.
+ license_dirs = [ "preferred", "dual", "deprecated", "exceptions" ]
lictree = repo.head.commit.tree['LICENSES']
spdx = SPDXdata()
@@ -58,13 +59,13 @@
elif l.startswith('SPDX-Licenses:'):
for lic in l.split(':')[1].upper().strip().replace(' ', '').replace('\t', '').split(','):
if not lic in spdx.licenses:
- raise SPDXException(None, 'Exception %s missing license %s' %(ex, lic))
+ raise SPDXException(None, 'Exception %s missing license %s' %(exception, lic))
spdx.exceptions[exception].append(lic)
elif l.startswith("License-Text:"):
if exception:
if not len(spdx.exceptions[exception]):
- raise SPDXException(el, 'Exception %s is missing SPDX-Licenses' %excid)
+ raise SPDXException(el, 'Exception %s is missing SPDX-Licenses' %exception)
spdx.exception_files += 1
else:
spdx.license_files += 1
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index e11564e..82a38e8 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -89,6 +89,9 @@
tfm = &hmac_tfm;
algo = evm_hmac;
} else {
+ if (hash_algo >= HASH_ALGO__LAST)
+ return ERR_PTR(-EINVAL);
+
tfm = &evm_tfm[hash_algo];
algo = hash_algo_name[hash_algo];
}
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index e0cc323..1cc822a 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -498,10 +498,11 @@
list_add_tail(&entry->list, &ima_policy_rules);
}
- if (entries[i].action == APPRAISE)
+ if (entries[i].action == APPRAISE) {
temp_ima_appraise |= ima_appraise_flag(entries[i].func);
- if (entries[i].func == POLICY_CHECK)
- temp_ima_appraise |= IMA_APPRAISE_POLICY;
+ if (entries[i].func == POLICY_CHECK)
+ temp_ima_appraise |= IMA_APPRAISE_POLICY;
+ }
}
}
@@ -1146,10 +1147,10 @@
};
static const char *const mask_tokens[] = {
- "MAY_EXEC",
- "MAY_WRITE",
- "MAY_READ",
- "MAY_APPEND"
+ "^MAY_EXEC",
+ "^MAY_WRITE",
+ "^MAY_READ",
+ "^MAY_APPEND"
};
#define __ima_hook_stringify(str) (#str),
@@ -1209,6 +1210,7 @@
struct ima_rule_entry *entry = v;
int i;
char tbuf[64] = {0,};
+ int offset = 0;
rcu_read_lock();
@@ -1232,15 +1234,17 @@
if (entry->flags & IMA_FUNC)
policy_func_show(m, entry->func);
- if (entry->flags & IMA_MASK) {
+ if ((entry->flags & IMA_MASK) || (entry->flags & IMA_INMASK)) {
+ if (entry->flags & IMA_MASK)
+ offset = 1;
if (entry->mask & MAY_EXEC)
- seq_printf(m, pt(Opt_mask), mt(mask_exec));
+ seq_printf(m, pt(Opt_mask), mt(mask_exec) + offset);
if (entry->mask & MAY_WRITE)
- seq_printf(m, pt(Opt_mask), mt(mask_write));
+ seq_printf(m, pt(Opt_mask), mt(mask_write) + offset);
if (entry->mask & MAY_READ)
- seq_printf(m, pt(Opt_mask), mt(mask_read));
+ seq_printf(m, pt(Opt_mask), mt(mask_read) + offset);
if (entry->mask & MAY_APPEND)
- seq_printf(m, pt(Opt_mask), mt(mask_append));
+ seq_printf(m, pt(Opt_mask), mt(mask_append) + offset);
seq_puts(m, " ");
}
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 90cedeb..7eeebe5 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -224,6 +224,9 @@
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
break;
+ case KVM_CAP_MAX_VCPU_ID:
+ r = KVM_MAX_VCPU_ID;
+ break;
case KVM_CAP_MSI_DEVID:
if (!kvm)
r = -EINVAL;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 134ec02..ca54b09 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1795,8 +1795,10 @@
if (map->page)
kunmap(map->page);
+#ifdef CONFIG_HAS_IOMEM
else
memunmap(map->hva);
+#endif
if (dirty) {
kvm_vcpu_mark_page_dirty(vcpu, map->gfn);
@@ -3149,8 +3151,6 @@
case KVM_CAP_MULTI_ADDRESS_SPACE:
return KVM_ADDRESS_SPACE_NUM;
#endif
- case KVM_CAP_MAX_VCPU_ID:
- return KVM_MAX_VCPU_ID;
case KVM_CAP_NR_MEMSLOTS:
return KVM_USER_MEM_SLOTS;
default:
