Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton:
- Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc,
gup, hugetlb, pagemap, memremap)
- Various other things (hfs, ocfs2, kmod, misc, seqfile)
* akpm: (34 commits)
ipc/util.c: sysvipc_find_ipc() should increase position index
kernel/gcov/fs.c: gcov_seq_next() should increase position index
fs/seq_file.c: seq_read(): add info message about buggy .next functions
drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings
change email address for Pali Rohár
selftests: kmod: test disabling module autoloading
selftests: kmod: fix handling test numbers above 9
docs: admin-guide: document the kernel.modprobe sysctl
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
kmod: make request_module() return an error when autoloading is disabled
mm/memremap: set caching mode for PCI P2PDMA memory to WC
mm/memory_hotplug: add pgprot_t to mhp_params
powerpc/mm: thread pgprot_t through create_section_mapping()
x86/mm: introduce __set_memory_prot()
x86/mm: thread pgprot_t through init_memory_mapping()
mm/memory_hotplug: rename mhp_restrictions to mhp_params
mm/memory_hotplug: drop the flags field from struct mhp_restrictions
mm/special: create generic fallbacks for pte_special() and pte_mkspecial()
mm/vma: introduce VM_ACCESS_FLAGS
mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS
...
diff --git a/.mailmap b/.mailmap
index 9198a93..893266d 100644
--- a/.mailmap
+++ b/.mailmap
@@ -210,6 +210,7 @@
Oleksij Rempel <linux@rempel-privat.de> <fixed-term.Oleksij.Rempel@de.bosch.com>
Oleksij Rempel <linux@rempel-privat.de> <o.rempel@pengutronix.de>
Oleksij Rempel <linux@rempel-privat.de> <ore@pengutronix.de>
+Pali Rohár <pali@kernel.org> <pali.rohar@gmail.com>
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Patrick Mochel <mochel@digitalimplant.org>
Paul Burton <paulburton@kernel.org> <paul.burton@imgtec.com>
diff --git a/Documentation/ABI/testing/sysfs-platform-dell-laptop b/Documentation/ABI/testing/sysfs-platform-dell-laptop
index 8c6a0b8..9b917c7 100644
--- a/Documentation/ABI/testing/sysfs-platform-dell-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-dell-laptop
@@ -2,7 +2,7 @@
Date: December 2014
KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
- Pali Rohár <pali.rohar@gmail.com>
+ Pali Rohár <pali@kernel.org>
Description:
This file allows to control the automatic keyboard
illumination mode on some systems that have an ambient
@@ -13,7 +13,7 @@
Date: December 2014
KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
- Pali Rohár <pali.rohar@gmail.com>
+ Pali Rohár <pali@kernel.org>
Description:
This file allows to specifiy the on/off threshold value,
as reported by the ambient light sensor.
@@ -22,7 +22,7 @@
Date: December 2014
KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
- Pali Rohár <pali.rohar@gmail.com>
+ Pali Rohár <pali@kernel.org>
Description:
This file allows to control the input triggers that
turn on the keyboard backlight illumination that is
@@ -45,7 +45,7 @@
Date: December 2014
KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
- Pali Rohár <pali.rohar@gmail.com>
+ Pali Rohár <pali@kernel.org>
Description:
This file allows to specify the interval after which the
keyboard illumination is disabled because of inactivity.
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2ad7d7c..f2a93c8 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1471,6 +1471,14 @@
hpet_mmap= [X86, HPET_MMAP] Allow userspace to mmap HPET
registers. Default set by CONFIG_HPET_MMAP_DEFAULT.
+ hugetlb_cma= [HW] The size of a cma area used for allocation
+ of gigantic hugepages.
+ Format: nn[KMGTPE]
+
+ Reserve a cma area of given size and allocate gigantic
+ hugepages using the cma allocator. If enabled, the
+ boot-time allocation of gigantic hugepages is skipped.
+
hugepages= [HW,X86-32,IA-64] HugeTLB pages to allocate at boot.
hugepagesz= [HW,IA-64,PPC,X86-64] The size of the HugeTLB pages.
On x86-64 and powerpc, this option can be specified
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 335696d..39c95c0e 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -446,6 +446,27 @@
successful IPC object allocation. If an IPC object allocation syscall
fails, it is undefined if the value remains unmodified or is reset to -1.
+modprobe:
+=========
+
+The path to the usermode helper for autoloading kernel modules, by
+default "/sbin/modprobe". This binary is executed when the kernel
+requests a module. For example, if userspace passes an unknown
+filesystem type to mount(), then the kernel will automatically request
+the corresponding filesystem module by executing this usermode helper.
+This usermode helper should insert the needed module into the kernel.
+
+This sysctl only affects module autoloading. It has no effect on the
+ability to explicitly insert modules.
+
+If this sysctl is set to the empty string, then module autoloading is
+completely disabled. The kernel will not try to execute a usermode
+helper at all, nor will it call the kernel_module_request LSM hook.
+
+If CONFIG_STATIC_USERMODEHELPER=y is set in the kernel configuration,
+then the configured static usermode helper overrides this sysctl,
+except that the empty string is still accepted to completely disable
+module autoloading as described above.
nmi_watchdog
============
diff --git a/MAINTAINERS b/MAINTAINERS
index d5b1878..ff04309 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -727,7 +727,7 @@
F: arch/alpha/
ALPS PS/2 TOUCHPAD DRIVER
-R: Pali Rohár <pali.rohar@gmail.com>
+R: Pali Rohár <pali@kernel.org>
F: drivers/input/mouse/alps.*
ALTERA I2C CONTROLLER DRIVER
@@ -4774,23 +4774,23 @@
DELL LAPTOP DRIVER
M: Matthew Garrett <mjg59@srcf.ucam.org>
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/dell-laptop.c
DELL LAPTOP FREEFALL DRIVER
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
S: Maintained
F: drivers/platform/x86/dell-smo8800.c
DELL LAPTOP RBTN DRIVER
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
S: Maintained
F: drivers/platform/x86/dell-rbtn.*
DELL LAPTOP SMM DRIVER
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
S: Maintained
F: drivers/hwmon/dell-smm-hwmon.c
F: include/uapi/linux/i8k.h
@@ -4802,7 +4802,7 @@
F: drivers/platform/x86/dell_rbu.c
DELL SMBIOS DRIVER
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
M: Mario Limonciello <mario.limonciello@dell.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
@@ -4835,7 +4835,7 @@
DELL WMI NOTIFICATIONS DRIVER
M: Matthew Garrett <mjg59@srcf.ucam.org>
-M: Pali Rohár <pali.rohar@gmail.com>
+M: Pali Rohár <pali@kernel.org>
S: Maintained
F: drivers/platform/x86/dell-wmi.c
@@ -11950,7 +11950,7 @@
F: drivers/media/i2c/ad5820.c
NOKIA N900 POWER SUPPLY DRIVERS
-R: Pali Rohár <pali.rohar@gmail.com>
+R: Pali Rohár <pali@kernel.org>
F: include/linux/power/bq2415x_charger.h
F: include/linux/power/bq27xxx_battery.h
F: drivers/power/supply/bq2415x_charger.c
diff --git a/arch/alpha/include/asm/page.h b/arch/alpha/include/asm/page.h
index f3fb284..e241bd8 100644
--- a/arch/alpha/include/asm/page.h
+++ b/arch/alpha/include/asm/page.h
@@ -90,9 +90,6 @@
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#endif /* CONFIG_DISCONTIGMEM */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index 299791c..0267aa8 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -268,7 +268,6 @@
extern inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_FOW); }
extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-extern inline int pte_special(pte_t pte) { return 0; }
extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_FOW; return pte; }
extern inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~(__DIRTY_BITS); return pte; }
@@ -276,7 +275,6 @@
extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) &= ~_PAGE_FOW; return pte; }
extern inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= __DIRTY_BITS; return pte; }
extern inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= __ACCESS_BITS; return pte; }
-extern inline pte_t pte_mkspecial(pte_t pte) { return pte; }
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h
index 0a32e8c..b0dfed0 100644
--- a/arch/arc/include/asm/page.h
+++ b/arch/arc/include/asm/page.h
@@ -102,7 +102,7 @@
#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
/* Default Permissions for stack/heaps pages (Non Executable) */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#define WANT_PAGE_VIRTUAL 1
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index c2b75cb..11b058a 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -161,9 +161,7 @@
#endif /* !__ASSEMBLY__ */
-#define VM_DATA_DEFAULT_FLAGS \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
- VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#include <asm-generic/getorder.h>
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 0d3ea35..9e084a4 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -211,8 +211,6 @@
#define pmd_addr_end(addr,end) (end)
#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext)
-#define pte_special(pte) (0)
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
/*
* We don't have huge page support for short descriptors, for the moment
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 0483cf4..befc8fc 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -243,19 +243,8 @@
extern void __sync_icache_dcache(pte_t pteval);
#endif
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pteval)
-{
- unsigned long ext = 0;
-
- if (addr < TASK_SIZE && pte_valid_user(pteval)) {
- if (!pte_special(pteval))
- __sync_icache_dcache(pteval);
- ext |= PTE_EXT_NG;
- }
-
- set_pte_ext(ptep, pteval, ext);
-}
+void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pteval);
static inline pte_t clear_pte_bit(pte_t pte, pgprot_t prot)
{
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index d00e3c7..f70d561 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -5,7 +5,7 @@
* Copyright (C) 2011 Texas Instruments, Inc.
* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
- * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2013 Pali Rohár <pali@kernel.org>
*/
#include <linux/arm-smccc.h>
diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h
index ba8c486..4aaa957 100644
--- a/arch/arm/mach-omap2/omap-secure.h
+++ b/arch/arm/mach-omap2/omap-secure.h
@@ -5,7 +5,7 @@
* Copyright (C) 2011 Texas Instruments, Inc.
* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
- * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2013 Pali Rohár <pali@kernel.org>
*/
#ifndef OMAP_ARCH_OMAP_SECURE_H
#define OMAP_ARCH_OMAP_SECURE_H
diff --git a/arch/arm/mach-omap2/omap-smc.S b/arch/arm/mach-omap2/omap-smc.S
index d483284..7376f52 100644
--- a/arch/arm/mach-omap2/omap-smc.S
+++ b/arch/arm/mach-omap2/omap-smc.S
@@ -6,7 +6,7 @@
* Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
- * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2013 Pali Rohár <pali@kernel.org>
*/
#include <linux/linkage.h>
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index b598e69..2dd5c41 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -189,7 +189,7 @@
*/
static inline bool access_error(unsigned int fsr, struct vm_area_struct *vma)
{
- unsigned int mask = VM_READ | VM_WRITE | VM_EXEC;
+ unsigned int mask = VM_ACCESS_FLAGS;
if ((fsr & FSR_WRITE) && !(fsr & FSR_CM))
mask = VM_WRITE;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 69a337d..ec8d0008 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1646,3 +1646,17 @@
build_mem_type_table();
early_paging_init(mdesc);
}
+
+void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pteval)
+{
+ unsigned long ext = 0;
+
+ if (addr < TASK_SIZE && pte_valid_user(pteval)) {
+ if (!pte_special(pteval))
+ __sync_icache_dcache(pteval);
+ ext |= PTE_EXT_NG;
+ }
+
+ set_pte_ext(ptep, pteval, ext);
+}
diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h
index 75d6cd2..c01b52a 100644
--- a/arch/arm64/include/asm/page.h
+++ b/arch/arm64/include/asm/page.h
@@ -36,9 +36,7 @@
#endif /* !__ASSEMBLY__ */
-#define VM_DATA_DEFAULT_FLAGS \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
- VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#include <asm-generic/getorder.h>
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 1027851..c9cedc0 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -445,7 +445,7 @@
const struct fault_info *inf;
struct mm_struct *mm = current->mm;
vm_fault_t fault, major = 0;
- unsigned long vm_flags = VM_READ | VM_WRITE | VM_EXEC;
+ unsigned long vm_flags = VM_ACCESS_FLAGS;
unsigned int mm_flags = FAULT_FLAG_DEFAULT;
if (kprobe_page_fault(regs, esr))
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index b65dffd..e42727e 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -29,6 +29,7 @@
#include <linux/mm.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
+#include <linux/hugetlb.h>
#include <asm/boot.h>
#include <asm/fixmap.h>
@@ -457,6 +458,11 @@
high_memory = __va(memblock_end_of_DRAM() - 1) + 1;
dma_contiguous_reserve(arm64_dma32_phys_limit);
+
+#ifdef CONFIG_ARM64_4K_PAGES
+ hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
+#endif
+
}
void __init bootmem_init(void)
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 9b08f7c..a374e4f 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1374,7 +1374,7 @@
}
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
int ret, flags = 0;
@@ -1382,12 +1382,13 @@
flags = NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
__create_pgd_mapping(swapper_pg_dir, start, __phys_to_virt(start),
- size, PAGE_KERNEL, __pgd_pgtable_alloc, flags);
+ size, params->pgprot, __pgd_pgtable_alloc,
+ flags);
memblock_clear_nomap(start, size);
ret = __add_pages(nid, start >> PAGE_SHIFT, size >> PAGE_SHIFT,
- restrictions);
+ params);
if (ret)
__remove_pgd_mapping(swapper_pg_dir,
__phys_to_virt(start), size);
diff --git a/arch/c6x/include/asm/page.h b/arch/c6x/include/asm/page.h
index 70db1e7..4007989 100644
--- a/arch/c6x/include/asm/page.h
+++ b/arch/c6x/include/asm/page.h
@@ -2,10 +2,7 @@
#ifndef _ASM_C6X_PAGE_H
#define _ASM_C6X_PAGE_H
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#include <asm-generic/page.h>
diff --git a/arch/csky/include/asm/page.h b/arch/csky/include/asm/page.h
index 9738eac..9b98bf3 100644
--- a/arch/csky/include/asm/page.h
+++ b/arch/csky/include/asm/page.h
@@ -85,9 +85,6 @@
PHYS_OFFSET_OFFSET)
#define virt_to_page(x) (mem_map + MAP_NR(x))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#define pfn_to_kaddr(x) __va(PFN_PHYS(x))
#include <asm-generic/memory_model.h>
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index 9b7764c..9ab4a44 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -110,9 +110,6 @@
extern void load_pgd(unsigned long pg_dir);
extern pte_t invalid_pte_table[PTRS_PER_PTE];
-static inline int pte_special(pte_t pte) { return 0; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
static inline void set_pte(pte_t *p, pte_t pte)
{
*p = pte;
diff --git a/arch/h8300/include/asm/page.h b/arch/h8300/include/asm/page.h
index 8da5124..53e0375 100644
--- a/arch/h8300/include/asm/page.h
+++ b/arch/h8300/include/asm/page.h
@@ -6,8 +6,6 @@
#include <linux/types.h>
#define MAP_NR(addr) (((uintptr_t)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#ifndef __ASSEMBLY__
extern unsigned long rom_length;
diff --git a/arch/hexagon/include/asm/page.h b/arch/hexagon/include/asm/page.h
index ee31f36..7cbf719 100644
--- a/arch/hexagon/include/asm/page.h
+++ b/arch/hexagon/include/asm/page.h
@@ -93,8 +93,7 @@
#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(__pa(kaddr)))
/* Default vm area behavior is non-executable. */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h
index 2fec20a..d383e8b 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -158,8 +158,6 @@
/* Seems to be zero even in architectures where the zero page is firewalled? */
#define FIRST_USER_ADDRESS 0UL
-#define pte_special(pte) 0
-#define pte_mkspecial(pte) (pte)
/* HUGETLB not working currently */
#ifdef CONFIG_HUGETLB_PAGE
diff --git a/arch/ia64/include/asm/page.h b/arch/ia64/include/asm/page.h
index 5798bd2..b69a549 100644
--- a/arch/ia64/include/asm/page.h
+++ b/arch/ia64/include/asm/page.h
@@ -218,10 +218,7 @@
#define PAGE_OFFSET RGN_BASE(RGN_KERNEL)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \
- (((current->personality & READ_IMPLIES_EXEC) != 0) \
- ? VM_EXEC : 0))
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#define GATE_ADDR RGN_BASE(RGN_GATE)
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index d602e7c..0e7b645 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -298,7 +298,6 @@
#define pte_exec(pte) ((pte_val(pte) & _PAGE_AR_RX) != 0)
#define pte_dirty(pte) ((pte_val(pte) & _PAGE_D) != 0)
#define pte_young(pte) ((pte_val(pte) & _PAGE_A) != 0)
-#define pte_special(pte) 0
/*
* Note: we convert AR_RWX to AR_RX and AR_RW to AR_R by clearing the 2nd bit in the
@@ -311,7 +310,6 @@
#define pte_mkclean(pte) (__pte(pte_val(pte) & ~_PAGE_D))
#define pte_mkdirty(pte) (__pte(pte_val(pte) | _PAGE_D))
#define pte_mkhuge(pte) (__pte(pte_val(pte)))
-#define pte_mkspecial(pte) (pte)
/*
* Because ia64's Icache and Dcache is not coherent (on a cpu), we need to
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index b01d68a..d637b4e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -670,13 +670,16 @@
#ifdef CONFIG_MEMORY_HOTPLUG
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
- ret = __add_pages(nid, start_pfn, nr_pages, restrictions);
+ if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
+ return -EINVAL;
+
+ ret = __add_pages(nid, start_pfn, nr_pages, params);
if (ret)
printk("%s: Problem encountered in __add_pages() as ret=%d\n",
__func__, ret);
diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h
index b9f45ae..0031cd3 100644
--- a/arch/m68k/include/asm/mcf_pgtable.h
+++ b/arch/m68k/include/asm/mcf_pgtable.h
@@ -235,11 +235,6 @@
return pte_val(pte) & CF_PAGE_ACCESSED;
}
-static inline int pte_special(pte_t pte)
-{
- return 0;
-}
-
static inline pte_t pte_wrprotect(pte_t pte)
{
pte_val(pte) &= ~CF_PAGE_WRITABLE;
@@ -312,11 +307,6 @@
return pte;
}
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- return pte;
-}
-
#define swapper_pg_dir kernel_pg_dir
extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h
index 4b91a47..48f19f0 100644
--- a/arch/m68k/include/asm/motorola_pgtable.h
+++ b/arch/m68k/include/asm/motorola_pgtable.h
@@ -174,7 +174,6 @@
static inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_RONLY); }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_RONLY; return pte; }
static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
@@ -192,7 +191,6 @@
pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_supervisor_cachemode;
return pte;
}
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h
index da54648..2614a12 100644
--- a/arch/m68k/include/asm/page.h
+++ b/arch/m68k/include/asm/page.h
@@ -65,9 +65,6 @@
#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/getorder.h>
#endif /* _M68K_PAGE_H */
diff --git a/arch/m68k/include/asm/sun3_pgtable.h b/arch/m68k/include/asm/sun3_pgtable.h
index bc41552..0caa18a 100644
--- a/arch/m68k/include/asm/sun3_pgtable.h
+++ b/arch/m68k/include/asm/sun3_pgtable.h
@@ -155,7 +155,6 @@
static inline int pte_write(pte_t pte) { return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & SUN3_PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_MODIFIED; return pte; }
@@ -168,7 +167,6 @@
//static inline pte_t pte_mkcache(pte_t pte) { pte_val(pte) &= SUN3_PAGE_NOCACHE; return pte; }
// until then, use:
static inline pte_t pte_mkcache(pte_t pte) { return pte; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index ae7215c..b13463d 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -194,8 +194,6 @@
#ifdef CONFIG_MMU
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif /* CONFIG_MMU */
#endif /* __KERNEL__ */
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 45b3087..6b056f6 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -77,10 +77,6 @@
* Undefined behaviour if not..
*/
-static inline int pte_special(pte_t pte) { return 0; }
-
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
/* Start and end of the vmalloc area. */
/* Make sure to map the vmalloc area above the pinned kernel memory area
of 32Mb. */
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 0ba4ce6..e2f503f 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -253,10 +253,7 @@
#define virt_addr_valid(kaddr) \
__virt_addr_valid((const volatile void *) (kaddr))
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index aef5378f..f1801e7 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -270,6 +270,36 @@
extern pgd_t swapper_pg_dir[];
/*
+ * Platform specific pte_special() and pte_mkspecial() definitions
+ * are required only when ARCH_HAS_PTE_SPECIAL is enabled.
+ */
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+#if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32)
+static inline int pte_special(pte_t pte)
+{
+ return pte.pte_low & _PAGE_SPECIAL;
+}
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+ pte.pte_low |= _PAGE_SPECIAL;
+ return pte;
+}
+#else
+static inline int pte_special(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_SPECIAL;
+}
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+ pte_val(pte) |= _PAGE_SPECIAL;
+ return pte;
+}
+#endif
+#endif /* CONFIG_ARCH_HAS_PTE_SPECIAL */
+
+/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
@@ -277,7 +307,6 @@
static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return pte.pte_low & _PAGE_SPECIAL; }
static inline pte_t pte_wrprotect(pte_t pte)
{
@@ -338,17 +367,10 @@
}
return pte;
}
-
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- pte.pte_low |= _PAGE_SPECIAL;
- return pte;
-}
#else
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL; }
static inline pte_t pte_wrprotect(pte_t pte)
{
@@ -392,12 +414,6 @@
return pte;
}
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- pte_val(pte) |= _PAGE_SPECIAL;
- return pte;
-}
-
#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_HUGE; }
diff --git a/arch/nds32/include/asm/page.h b/arch/nds32/include/asm/page.h
index 86b3201..add33a7 100644
--- a/arch/nds32/include/asm/page.h
+++ b/arch/nds32/include/asm/page.h
@@ -59,9 +59,6 @@
#endif /* !__ASSEMBLY__ */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#endif /* __KERNEL__ */
#endif
diff --git a/arch/nds32/include/asm/pgtable.h b/arch/nds32/include/asm/pgtable.h
index 6abc58a..476cc4d 100644
--- a/arch/nds32/include/asm/pgtable.h
+++ b/arch/nds32/include/asm/pgtable.h
@@ -286,15 +286,6 @@
PTE_BIT_FUNC(mkdirty, |=_PAGE_D);
PTE_BIT_FUNC(mkold, &=~_PAGE_YOUNG);
PTE_BIT_FUNC(mkyoung, |=_PAGE_YOUNG);
-static inline int pte_special(pte_t pte)
-{
- return 0;
-}
-
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- return pte;
-}
/*
* Mark the prot value as uncacheable and unbufferable.
diff --git a/arch/nds32/mm/fault.c b/arch/nds32/mm/fault.c
index 0cf0c08..f331e53 100644
--- a/arch/nds32/mm/fault.c
+++ b/arch/nds32/mm/fault.c
@@ -79,7 +79,7 @@
struct vm_area_struct *vma;
int si_code;
vm_fault_t fault;
- unsigned int mask = VM_READ | VM_WRITE | VM_EXEC;
+ unsigned int mask = VM_ACCESS_FLAGS;
unsigned int flags = FAULT_FLAG_DEFAULT;
error_code = error_code & (ITYPE_mskINST | ITYPE_mskETYPE);
diff --git a/arch/nios2/include/asm/page.h b/arch/nios2/include/asm/page.h
index 79fcac6..6a98981 100644
--- a/arch/nios2/include/asm/page.h
+++ b/arch/nios2/include/asm/page.h
@@ -98,8 +98,7 @@
# define virt_to_page(vaddr) pfn_to_page(PFN_DOWN(virt_to_phys(vaddr)))
# define virt_addr_valid(vaddr) pfn_valid(PFN_DOWN(virt_to_phys(vaddr)))
-# define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+# define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#include <asm-generic/memory_model.h>
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 99985d8..f98b7f4 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -113,7 +113,6 @@
{ return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) \
{ return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return 0; }
#define pgprot_noncached pgprot_noncached
@@ -168,8 +167,6 @@
return pte;
}
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
static inline pte_t pte_mkyoung(pte_t pte)
{
pte_val(pte) |= _PAGE_ACCESSED;
diff --git a/arch/openrisc/include/asm/page.h b/arch/openrisc/include/asm/page.h
index 01069db..aab6e64 100644
--- a/arch/openrisc/include/asm/page.h
+++ b/arch/openrisc/include/asm/page.h
@@ -86,11 +86,6 @@
#endif /* __ASSEMBLY__ */
-
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h
index 248d22d..7f3fb9c 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -236,8 +236,6 @@
static inline int pte_exec(pte_t pte) { return pte_val(pte) & _PAGE_EXEC; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return 0; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
static inline pte_t pte_wrprotect(pte_t pte)
{
diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 796ae29..6b3f674 100644
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -180,9 +180,6 @@
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
#include <asm/pdc.h>
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index f0a3659..9832c73 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -377,7 +377,6 @@
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
-static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
static inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
@@ -385,7 +384,6 @@
static inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_DIRTY; return pte; }
static inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= _PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) |= _PAGE_WRITE; return pte; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
/*
* Huge pte definitions.
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 2781ebf..6fc4520 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h
@@ -251,7 +251,8 @@
extern void hash__vmemmap_remove_mapping(unsigned long start,
unsigned long page_size);
-int hash__create_section_mapping(unsigned long start, unsigned long end, int nid);
+int hash__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
int hash__remove_section_mapping(unsigned long start, unsigned long end);
#endif /* !__ASSEMBLY__ */
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h
index a1c60d5..08c222d 100644
--- a/arch/powerpc/include/asm/book3s/64/radix.h
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -294,7 +294,8 @@
}
#ifdef CONFIG_MEMORY_HOTPLUG
-int radix__create_section_mapping(unsigned long start, unsigned long end, int nid);
+int radix__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
int radix__remove_section_mapping(unsigned long start, unsigned long end);
#endif /* CONFIG_MEMORY_HOTPLUG */
#endif /* __ASSEMBLY__ */
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 080a0bf..3ee8df0 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -240,13 +240,8 @@
* and needs to be executable. This means the whole heap ends
* up being executable.
*/
-#define VM_DATA_DEFAULT_FLAGS32 \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
- VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS32 VM_DATA_FLAGS_TSK_EXEC
+#define VM_DATA_DEFAULT_FLAGS64 VM_DATA_FLAGS_NON_EXEC
#ifdef __powerpc64__
#include <asm/page_64.h>
diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h
index 5962797..79a9b7c 100644
--- a/arch/powerpc/include/asm/page_64.h
+++ b/arch/powerpc/include/asm/page_64.h
@@ -94,11 +94,8 @@
* stack by default, so in the absence of a PT_GNU_STACK program header
* we turn execute permission off.
*/
-#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_STACK_DEFAULT_FLAGS32 VM_DATA_FLAGS_EXEC
+#define VM_STACK_DEFAULT_FLAGS64 VM_DATA_FLAGS_NON_EXEC
#define VM_STACK_DEFAULT_FLAGS \
(is_32bit_task() ? \
diff --git a/arch/powerpc/include/asm/sparsemem.h b/arch/powerpc/include/asm/sparsemem.h
index 3192d45..c89b324 100644
--- a/arch/powerpc/include/asm/sparsemem.h
+++ b/arch/powerpc/include/asm/sparsemem.h
@@ -13,7 +13,8 @@
#endif /* CONFIG_SPARSEMEM */
#ifdef CONFIG_MEMORY_HOTPLUG
-extern int create_section_mapping(unsigned long start, unsigned long end, int nid);
+extern int create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
extern int remove_section_mapping(unsigned long start, unsigned long end);
#ifdef CONFIG_PPC_BOOK3S_64
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 7e5714a..8ed2411 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -809,7 +809,8 @@
return 0;
}
-int hash__create_section_mapping(unsigned long start, unsigned long end, int nid)
+int hash__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
int rc;
@@ -819,7 +820,7 @@
}
rc = htab_bolt_mapping(start, end, __pa(start),
- pgprot_val(PAGE_KERNEL), mmu_linear_psize,
+ pgprot_val(prot), mmu_linear_psize,
mmu_kernel_ssize);
if (rc < 0) {
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 2bf7e1b..e0bb69c 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -171,12 +171,13 @@
}
#ifdef CONFIG_MEMORY_HOTPLUG
-int __meminit create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __meminit create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
if (radix_enabled())
- return radix__create_section_mapping(start, end, nid);
+ return radix__create_section_mapping(start, end, nid, prot);
- return hash__create_section_mapping(start, end, nid);
+ return hash__create_section_mapping(start, end, nid, prot);
}
int __meminit remove_section_mapping(unsigned long start, unsigned long end)
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index 07527f1..1199fc2 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -315,7 +315,7 @@
static inline bool vma_is_pkey_exec_only(struct vm_area_struct *vma)
{
/* Do this check first since the vm_flags should be hot */
- if ((vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) != VM_EXEC)
+ if ((vma->vm_flags & VM_ACCESS_FLAGS) != VM_EXEC)
return false;
return (vma_pkey(vma) == vma->vm_mm->context.execute_only_pkey);
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 2a9a0cd..8f9edf0 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -254,7 +254,7 @@
static int __meminit create_physical_mapping(unsigned long start,
unsigned long end,
- int nid)
+ int nid, pgprot_t _prot)
{
unsigned long vaddr, addr, mapping_size = 0;
bool prev_exec, exec = false;
@@ -290,7 +290,7 @@
prot = PAGE_KERNEL_X;
exec = true;
} else {
- prot = PAGE_KERNEL;
+ prot = _prot;
exec = false;
}
@@ -334,7 +334,7 @@
WARN_ON(create_physical_mapping(reg->base,
reg->base + reg->size,
- -1));
+ -1, PAGE_KERNEL));
}
/* Find out how many PID bits are supported */
@@ -713,8 +713,10 @@
spin_unlock(&init_mm.page_table_lock);
pte_clear(&init_mm, params->aligned_start, params->pte);
- create_physical_mapping(__pa(params->aligned_start), __pa(params->start), -1);
- create_physical_mapping(__pa(params->end), __pa(params->aligned_end), -1);
+ create_physical_mapping(__pa(params->aligned_start),
+ __pa(params->start), -1, PAGE_KERNEL);
+ create_physical_mapping(__pa(params->end), __pa(params->aligned_end),
+ -1, PAGE_KERNEL);
spin_lock(&init_mm.page_table_lock);
return 0;
}
@@ -871,14 +873,16 @@
radix__flush_tlb_kernel_range(start, end);
}
-int __meminit radix__create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __meminit radix__create_section_mapping(unsigned long start,
+ unsigned long end, int nid,
+ pgprot_t prot)
{
if (end >= RADIX_VMALLOC_START) {
pr_warn("Outside the supported range\n");
return -1;
}
- return create_physical_mapping(__pa(start), __pa(end), nid);
+ return create_physical_mapping(__pa(start), __pa(end), nid, prot);
}
int __meminit radix__remove_section_mapping(unsigned long start, unsigned long end)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 9b4f5fb..041ed7c 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -90,7 +90,8 @@
}
#endif
-int __weak create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __weak create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
return -ENODEV;
}
@@ -122,7 +123,7 @@
}
int __ref arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
@@ -131,14 +132,15 @@
resize_hpt_for_hotplug(memblock_phys_mem_size());
start = (unsigned long)__va(start);
- rc = create_section_mapping(start, start + size, nid);
+ rc = create_section_mapping(start, start + size, nid,
+ params->pgprot);
if (rc) {
pr_warn("Unable to create mapping for hot added memory 0x%llx..0x%llx: %d\n",
start, start + size, rc);
return -EFAULT;
}
- return __add_pages(nid, start_pfn, nr_pages, restrictions);
+ return __add_pages(nid, start_pfn, nr_pages, params);
}
void __ref arch_remove_memory(int nid, u64 start, u64 size,
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 8ca1930..2d50f76 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -137,8 +137,7 @@
#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index f2d4c1b..cc98f9b 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -181,8 +181,7 @@
#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 1bf091b..dedc28b 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -580,7 +580,7 @@
int access;
vm_fault_t fault;
- access = VM_READ | VM_EXEC | VM_WRITE;
+ access = VM_ACCESS_FLAGS;
fault = do_exception(regs, access);
if (unlikely(fault))
do_fault_error(regs, access, fault);
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index ac44bd7..87b2d02 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -268,20 +268,23 @@
#endif /* CONFIG_CMA */
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = PFN_DOWN(start);
unsigned long size_pages = PFN_DOWN(size);
int rc;
- if (WARN_ON_ONCE(restrictions->altmap))
+ if (WARN_ON_ONCE(params->altmap))
+ return -EINVAL;
+
+ if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
return -EINVAL;
rc = vmem_add_mapping(start, size);
if (rc)
return rc;
- rc = __add_pages(nid, start_pfn, size_pages, restrictions);
+ rc = __add_pages(nid, start_pfn, size_pages, params);
if (rc)
vmem_remove_mapping(start, size);
return rc;
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h
index 5eef8be..ea8d68f 100644
--- a/arch/sh/include/asm/page.h
+++ b/arch/sh/include/asm/page.h
@@ -182,9 +182,6 @@
#endif
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d1b1ff2..b9de2d4 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -406,14 +406,17 @@
#ifdef CONFIG_MEMORY_HOTPLUG
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = PFN_DOWN(start);
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
+ if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot)
+ return -EINVAL;
+
/* We only have ZONE_NORMAL, so this is easy.. */
- ret = __add_pages(nid, start_pfn, nr_pages, restrictions);
+ ret = __add_pages(nid, start_pfn, nr_pages, params);
if (unlikely(ret))
printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
diff --git a/arch/sparc/include/asm/page_32.h b/arch/sparc/include/asm/page_32.h
index b76d59e..4782600 100644
--- a/arch/sparc/include/asm/page_32.h
+++ b/arch/sparc/include/asm/page_32.h
@@ -133,9 +133,6 @@
#define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
#define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr)
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h
index e80f2d5..254dffd 100644
--- a/arch/sparc/include/asm/page_64.h
+++ b/arch/sparc/include/asm/page_64.h
@@ -158,9 +158,6 @@
#endif /* !(__ASSEMBLY__) */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/getorder.h>
#endif /* _SPARC64_PAGE_H */
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 6d6f44c..0de659ae 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -223,11 +223,6 @@
return pte_val(pte) & SRMMU_REF;
}
-static inline int pte_special(pte_t pte)
-{
- return 0;
-}
-
static inline pte_t pte_wrprotect(pte_t pte)
{
return __pte(pte_val(pte) & ~SRMMU_WRITE);
@@ -258,8 +253,6 @@
return __pte(pte_val(pte) | SRMMU_REF);
}
-#define pte_mkspecial(pte) (pte)
-
#define pfn_pte(pfn, prot) mk_pte(pfn_to_page(pfn), prot)
static inline unsigned long pte_pfn(pte_t pte)
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 65494c3..da527b2 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -907,11 +907,11 @@
(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))
/* Find an entry in the third-level page table.. */
-#define pte_index(dir, address) \
- ((pte_t *) __pmd_page(*(dir)) + \
- ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
-#define pte_offset_kernel pte_index
-#define pte_offset_map pte_index
+#define pte_index(address) \
+ ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset_kernel(dir, address) \
+ ((pte_t *) __pmd_page(*(dir)) + pte_index(address))
+#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) do { } while (0)
/* We cannot include <linux/mm_types.h> at this point yet: */
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 2daa58d..b5ddf5d 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -167,11 +167,6 @@
return(pte_present(pte) && (pte_get_bits(pte, _PAGE_NEWPROT)));
}
-static inline int pte_special(pte_t pte)
-{
- return 0;
-}
-
/*
* =================================
* Flags setting section.
@@ -247,11 +242,6 @@
return(pte);
}
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- return(pte);
-}
-
static inline void set_pte(pte_t *pteptr, pte_t pteval)
{
pte_copy(*pteptr, pteval);
diff --git a/arch/unicore32/include/asm/page.h b/arch/unicore32/include/asm/page.h
index 8a89335..96d6bdf 100644
--- a/arch/unicore32/include/asm/page.h
+++ b/arch/unicore32/include/asm/page.h
@@ -69,9 +69,6 @@
#endif /* !__ASSEMBLY__ */
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/getorder.h>
#endif
diff --git a/arch/unicore32/include/asm/pgtable.h b/arch/unicore32/include/asm/pgtable.h
index c8f7ba1..3b8731b 100644
--- a/arch/unicore32/include/asm/pgtable.h
+++ b/arch/unicore32/include/asm/pgtable.h
@@ -177,7 +177,6 @@
#define pte_dirty(pte) (pte_val(pte) & PTE_DIRTY)
#define pte_young(pte) (pte_val(pte) & PTE_YOUNG)
#define pte_exec(pte) (pte_val(pte) & PTE_EXEC)
-#define pte_special(pte) (0)
#define PTE_BIT_FUNC(fn, op) \
static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
@@ -189,8 +188,6 @@
PTE_BIT_FUNC(mkold, &= ~PTE_YOUNG);
PTE_BIT_FUNC(mkyoung, |= PTE_YOUNG);
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
/*
* Mark the prot value as uncacheable.
*/
diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c
index a9bd08f..3022104 100644
--- a/arch/unicore32/mm/fault.c
+++ b/arch/unicore32/mm/fault.c
@@ -149,7 +149,7 @@
*/
static inline bool access_error(unsigned int fsr, struct vm_area_struct *vma)
{
- unsigned int mask = VM_READ | VM_WRITE | VM_EXEC;
+ unsigned int mask = VM_ACCESS_FLAGS;
if (!(fsr ^ 0x12)) /* write? */
mask = VM_WRITE;
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h
index c85e150..a506a41 100644
--- a/arch/x86/include/asm/page_types.h
+++ b/arch/x86/include/asm/page_types.h
@@ -35,9 +35,7 @@
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
-#define VM_DATA_DEFAULT_FLAGS \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \
CONFIG_PHYSICAL_ALIGN)
@@ -73,9 +71,6 @@
bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn);
-extern unsigned long init_memory_mapping(unsigned long start,
- unsigned long end);
-
extern void initmem_init(void);
#endif /* !__ASSEMBLY__ */
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 28838d7..4d02e64 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -860,7 +860,10 @@
*
* this function returns the index of the entry in the pte page which would
* control the given virtual address
+ *
+ * Also define macro so we can test if pte_index is defined for arch.
*/
+#define pte_index pte_index
static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
@@ -1078,6 +1081,9 @@
void __init poking_init(void);
+unsigned long init_memory_mapping(unsigned long start,
+ unsigned long end, pgprot_t prot);
+
# ifdef CONFIG_RANDOMIZE_MEMORY
void __meminit init_trampoline(void);
# else
diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h
index 950532c..ec2c0a0 100644
--- a/arch/x86/include/asm/set_memory.h
+++ b/arch/x86/include/asm/set_memory.h
@@ -34,6 +34,7 @@
* The caller is required to take care of these.
*/
+int __set_memory_prot(unsigned long addr, int numpages, pgprot_t prot);
int _set_memory_uc(unsigned long addr, int numpages);
int _set_memory_wc(unsigned long addr, int numpages);
int _set_memory_wt(unsigned long addr, int numpages);
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c
index 4e5f502..16133819 100644
--- a/arch/x86/kernel/amd_gart_64.c
+++ b/arch/x86/kernel/amd_gart_64.c
@@ -744,7 +744,8 @@
start_pfn = PFN_DOWN(aper_base);
if (!pfn_range_is_mapped(start_pfn, end_pfn))
- init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
+ init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT,
+ PAGE_KERNEL);
pr_info("PCI-DMA: using GART IOMMU.\n");
iommu_size = check_iommu_size(info.aper_base, aper_size);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index e6b5450..4b3fa6c 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -16,6 +16,7 @@
#include <linux/pci.h>
#include <linux/root_dev.h>
#include <linux/sfi.h>
+#include <linux/hugetlb.h>
#include <linux/tboot.h>
#include <linux/usb/xhci-dbgp.h>
@@ -1157,6 +1158,9 @@
initmem_init();
dma_contiguous_reserve(max_pfn_mapped << PAGE_SHIFT);
+ if (boot_cpu_has(X86_FEATURE_GBPAGES))
+ hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
+
/*
* Reserve memory for crash kernel after SRAT is parsed so that it
* won't consume hotpluggable memory.
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index e7bb483..1bba16c 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -467,7 +467,7 @@
* the physical memory. To access them they are temporarily mapped.
*/
unsigned long __ref init_memory_mapping(unsigned long start,
- unsigned long end)
+ unsigned long end, pgprot_t prot)
{
struct map_range mr[NR_RANGE_MR];
unsigned long ret = 0;
@@ -481,7 +481,8 @@
for (i = 0; i < nr_range; i++)
ret = kernel_physical_mapping_init(mr[i].start, mr[i].end,
- mr[i].page_size_mask);
+ mr[i].page_size_mask,
+ prot);
add_pfn_range_mapped(start >> PAGE_SHIFT, ret >> PAGE_SHIFT);
@@ -521,7 +522,7 @@
*/
can_use_brk_pgt = max(start, (u64)pgt_buf_end<<PAGE_SHIFT) >=
min(end, (u64)pgt_buf_top<<PAGE_SHIFT);
- init_memory_mapping(start, end);
+ init_memory_mapping(start, end, PAGE_KERNEL);
mapped_ram_size += end - start;
can_use_brk_pgt = true;
}
@@ -661,7 +662,7 @@
#endif
/* the ISA range is always mapped regardless of memory holes */
- init_memory_mapping(0, ISA_END_ADDRESS);
+ init_memory_mapping(0, ISA_END_ADDRESS, PAGE_KERNEL);
/* Init the trampoline, possibly with KASLR memory offset */
init_trampoline();
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index de73992..4222a01 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -257,7 +257,8 @@
unsigned long __init
kernel_physical_mapping_init(unsigned long start,
unsigned long end,
- unsigned long page_size_mask)
+ unsigned long page_size_mask,
+ pgprot_t prot)
{
int use_pse = page_size_mask == (1<<PG_LEVEL_2M);
unsigned long last_map_addr = end;
@@ -819,12 +820,24 @@
#ifdef CONFIG_MEMORY_HOTPLUG
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
+ int ret;
- return __add_pages(nid, start_pfn, nr_pages, restrictions);
+ /*
+ * The page tables were already mapped at boot so if the caller
+ * requests a different mapping type then we must change all the
+ * pages with __set_memory_prot().
+ */
+ if (params->pgprot.pgprot != PAGE_KERNEL.pgprot) {
+ ret = __set_memory_prot(start, nr_pages, params->pgprot);
+ if (ret)
+ return ret;
+ }
+
+ return __add_pages(nid, start_pfn, nr_pages, params);
}
void arch_remove_memory(int nid, u64 start, u64 size,
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 0a14711..3b289c2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -585,7 +585,7 @@
*/
static unsigned long __meminit
phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end,
- unsigned long page_size_mask, bool init)
+ unsigned long page_size_mask, pgprot_t _prot, bool init)
{
unsigned long pages = 0, paddr_next;
unsigned long paddr_last = paddr_end;
@@ -595,7 +595,7 @@
for (; i < PTRS_PER_PUD; i++, paddr = paddr_next) {
pud_t *pud;
pmd_t *pmd;
- pgprot_t prot = PAGE_KERNEL;
+ pgprot_t prot = _prot;
vaddr = (unsigned long)__va(paddr);
pud = pud_page + pud_index(vaddr);
@@ -644,9 +644,12 @@
if (page_size_mask & (1<<PG_LEVEL_1G)) {
pages++;
spin_lock(&init_mm.page_table_lock);
+
+ prot = __pgprot(pgprot_val(prot) | __PAGE_KERNEL_LARGE);
+
set_pte_init((pte_t *)pud,
pfn_pte((paddr & PUD_MASK) >> PAGE_SHIFT,
- PAGE_KERNEL_LARGE),
+ prot),
init);
spin_unlock(&init_mm.page_table_lock);
paddr_last = paddr_next;
@@ -669,7 +672,7 @@
static unsigned long __meminit
phys_p4d_init(p4d_t *p4d_page, unsigned long paddr, unsigned long paddr_end,
- unsigned long page_size_mask, bool init)
+ unsigned long page_size_mask, pgprot_t prot, bool init)
{
unsigned long vaddr, vaddr_end, vaddr_next, paddr_next, paddr_last;
@@ -679,7 +682,7 @@
if (!pgtable_l5_enabled())
return phys_pud_init((pud_t *) p4d_page, paddr, paddr_end,
- page_size_mask, init);
+ page_size_mask, prot, init);
for (; vaddr < vaddr_end; vaddr = vaddr_next) {
p4d_t *p4d = p4d_page + p4d_index(vaddr);
@@ -702,13 +705,13 @@
if (!p4d_none(*p4d)) {
pud = pud_offset(p4d, 0);
paddr_last = phys_pud_init(pud, paddr, __pa(vaddr_end),
- page_size_mask, init);
+ page_size_mask, prot, init);
continue;
}
pud = alloc_low_page();
paddr_last = phys_pud_init(pud, paddr, __pa(vaddr_end),
- page_size_mask, init);
+ page_size_mask, prot, init);
spin_lock(&init_mm.page_table_lock);
p4d_populate_init(&init_mm, p4d, pud, init);
@@ -722,7 +725,7 @@
__kernel_physical_mapping_init(unsigned long paddr_start,
unsigned long paddr_end,
unsigned long page_size_mask,
- bool init)
+ pgprot_t prot, bool init)
{
bool pgd_changed = false;
unsigned long vaddr, vaddr_start, vaddr_end, vaddr_next, paddr_last;
@@ -743,13 +746,13 @@
paddr_last = phys_p4d_init(p4d, __pa(vaddr),
__pa(vaddr_end),
page_size_mask,
- init);
+ prot, init);
continue;
}
p4d = alloc_low_page();
paddr_last = phys_p4d_init(p4d, __pa(vaddr), __pa(vaddr_end),
- page_size_mask, init);
+ page_size_mask, prot, init);
spin_lock(&init_mm.page_table_lock);
if (pgtable_l5_enabled())
@@ -778,10 +781,10 @@
unsigned long __meminit
kernel_physical_mapping_init(unsigned long paddr_start,
unsigned long paddr_end,
- unsigned long page_size_mask)
+ unsigned long page_size_mask, pgprot_t prot)
{
return __kernel_physical_mapping_init(paddr_start, paddr_end,
- page_size_mask, true);
+ page_size_mask, prot, true);
}
/*
@@ -796,7 +799,8 @@
unsigned long page_size_mask)
{
return __kernel_physical_mapping_init(paddr_start, paddr_end,
- page_size_mask, false);
+ page_size_mask, PAGE_KERNEL,
+ false);
}
#ifndef CONFIG_NUMA
@@ -843,11 +847,11 @@
}
int add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
int ret;
- ret = __add_pages(nid, start_pfn, nr_pages, restrictions);
+ ret = __add_pages(nid, start_pfn, nr_pages, params);
WARN_ON_ONCE(ret);
/* update max_pfn, max_low_pfn and high_memory */
@@ -858,14 +862,14 @@
}
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
- init_memory_mapping(start, start + size);
+ init_memory_mapping(start, start + size, params->pgprot);
- return add_pages(nid, start_pfn, nr_pages, restrictions);
+ return add_pages(nid, start_pfn, nr_pages, params);
}
#define PAGE_INUSE 0xFD
diff --git a/arch/x86/mm/mm_internal.h b/arch/x86/mm/mm_internal.h
index eeae142..3f37b5c 100644
--- a/arch/x86/mm/mm_internal.h
+++ b/arch/x86/mm/mm_internal.h
@@ -12,7 +12,8 @@
unsigned long kernel_physical_mapping_init(unsigned long start,
unsigned long end,
- unsigned long page_size_mask);
+ unsigned long page_size_mask,
+ pgprot_t prot);
unsigned long kernel_physical_mapping_change(unsigned long start,
unsigned long end,
unsigned long page_size_mask);
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index 6d54240..59eca6a 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -1795,6 +1795,19 @@
CPA_PAGES_ARRAY, pages);
}
+/*
+ * _set_memory_prot is an internal helper for callers that have been passed
+ * a pgprot_t value from upper layers and a reservation has already been taken.
+ * If you want to set the pgprot to a specific page protocol, use the
+ * set_memory_xx() functions.
+ */
+int __set_memory_prot(unsigned long addr, int numpages, pgprot_t prot)
+{
+ return change_page_attr_set_clr(&addr, numpages, prot,
+ __pgprot(~pgprot_val(prot)), 0, 0,
+ NULL);
+}
+
int _set_memory_uc(unsigned long addr, int numpages)
{
/*
diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c
index c6f84c0..8873ed1 100644
--- a/arch/x86/mm/pkeys.c
+++ b/arch/x86/mm/pkeys.c
@@ -63,7 +63,7 @@
static inline bool vma_is_pkey_exec_only(struct vm_area_struct *vma)
{
/* Do this check first since the vm_flags should be hot */
- if ((vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) != VM_EXEC)
+ if ((vma->vm_flags & VM_ACCESS_FLAGS) != VM_EXEC)
return false;
if (vma_pkey(vma) != vma->vm_mm->context.execute_only_pkey)
return false;
diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
index 607f581..c60255d 100644
--- a/arch/x86/platform/uv/bios_uv.c
+++ b/arch/x86/platform/uv/bios_uv.c
@@ -352,7 +352,8 @@
if (type == EFI_MEMORY_MAPPED_IO)
return ioremap(phys_addr, size);
- last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
+ last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size,
+ PAGE_KERNEL);
if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size) {
unsigned long top = last_map_pfn << PAGE_SHIFT;
efi_ioremap(top, size - (top - phys_addr), type, attribute);
diff --git a/arch/x86/um/asm/vm-flags.h b/arch/x86/um/asm/vm-flags.h
index 7c297e9..df7a389 100644
--- a/arch/x86/um/asm/vm-flags.h
+++ b/arch/x86/um/asm/vm-flags.h
@@ -9,17 +9,11 @@
#ifdef CONFIG_X86_32
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
#else
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#define VM_STACK_DEFAULT_FLAGS (VM_GROWSDOWN | VM_READ | VM_WRITE | \
- VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_STACK_DEFAULT_FLAGS (VM_GROWSDOWN | VM_DATA_FLAGS_EXEC)
#endif
#endif
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index f4771c2..37ce25e 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -203,8 +203,5 @@
#endif /* __ASSEMBLY__ */
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#include <asm-generic/memory_model.h>
#endif /* _XTENSA_PAGE_H */
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
index 27ac17c..8be0c05 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -266,7 +266,6 @@
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte)
{ pte_val(pte) &= ~(_PAGE_WRITABLE | _PAGE_HW_WRITE); return pte; }
@@ -280,8 +279,6 @@
{ pte_val(pte) |= _PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkwrite(pte_t pte)
{ pte_val(pte) |= _PAGE_WRITABLE; return pte; }
-static inline pte_t pte_mkspecial(pte_t pte)
- { return pte; }
#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) & ~_PAGE_CA_MASK))
diff --git a/drivers/char/hw_random/omap3-rom-rng.c b/drivers/char/hw_random/omap3-rom-rng.c
index a431c5c..e0d77fa 100644
--- a/drivers/char/hw_random/omap3-rom-rng.c
+++ b/drivers/char/hw_random/omap3-rom-rng.c
@@ -4,7 +4,7 @@
* Copyright (C) 2009 Nokia Corporation
* Author: Juha Yrjola <juha.yrjola@solidboot.com>
*
- * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2013 Pali Rohár <pali@kernel.org>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@@ -178,5 +178,5 @@
MODULE_ALIAS("platform:omap3-rom-rng");
MODULE_AUTHOR("Juha Yrjola");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_LICENSE("GPL");
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 265303a..f6a2f42 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -1493,7 +1493,6 @@
irq = platform_get_irq(pdev, i);
if (irq < 0) {
ret = irq;
- dev_err(&pdev->dev, "No irq resource for chan %d\n", i);
goto err_pm_disable;
}
diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
index d4c8300..ab719d3 100644
--- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -7,7 +7,7 @@
* Hwmon integration:
* Copyright (C) 2011 Jean Delvare <jdelvare@suse.de>
* Copyright (C) 2013, 2014 Guenter Roeck <linux@roeck-us.net>
- * Copyright (C) 2014, 2015 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2014, 2015 Pali Rohár <pali@kernel.org>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -86,7 +86,7 @@
#define I8K_HWMON_HAVE_FAN3 (1 << 12)
MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_DESCRIPTION("Dell laptop SMM BIOS hwmon driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("i8k");
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 74e988f..f8d3e3b 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -4,7 +4,7 @@
*
* Copyright (c) Red Hat <mjg@redhat.com>
* Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
- * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2014 Pali Rohár <pali@kernel.org>
*
* Based on documentation in the libsmbios package:
* Copyright (C) 2005-2014 Dell Inc.
@@ -2295,6 +2295,6 @@
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_DESCRIPTION("Dell laptop driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/dell-rbtn.c b/drivers/platform/x86/dell-rbtn.c
index a6b856c..a89fad4 100644
--- a/drivers/platform/x86/dell-rbtn.c
+++ b/drivers/platform/x86/dell-rbtn.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
Dell Airplane Mode Switch driver
- Copyright (C) 2014-2015 Pali Rohár <pali.rohar@gmail.com>
+ Copyright (C) 2014-2015 Pali Rohár <pali@kernel.org>
*/
@@ -495,5 +495,5 @@
"(default true)");
MODULE_DEVICE_TABLE(acpi, rbtn_ids);
MODULE_DESCRIPTION("Dell Airplane Mode Switch driver");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/dell-rbtn.h b/drivers/platform/x86/dell-rbtn.h
index 0fdc816..5e030f9 100644
--- a/drivers/platform/x86/dell-rbtn.h
+++ b/drivers/platform/x86/dell-rbtn.h
@@ -1,7 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
Dell Airplane Mode Switch driver
- Copyright (C) 2014-2015 Pali Rohár <pali.rohar@gmail.com>
+ Copyright (C) 2014-2015 Pali Rohár <pali@kernel.org>
*/
diff --git a/drivers/platform/x86/dell-smbios-base.c b/drivers/platform/x86/dell-smbios-base.c
index fe59b0e..2e2cd56 100644
--- a/drivers/platform/x86/dell-smbios-base.c
+++ b/drivers/platform/x86/dell-smbios-base.c
@@ -4,7 +4,7 @@
*
* Copyright (c) Red Hat <mjg@redhat.com>
* Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
- * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2014 Pali Rohár <pali@kernel.org>
*
* Based on documentation in the libsmbios package:
* Copyright (C) 2005-2014 Dell Inc.
@@ -645,7 +645,7 @@
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_AUTHOR("Mario Limonciello <mario.limonciello@dell.com>");
MODULE_DESCRIPTION("Common functions for kernel modules using Dell SMBIOS");
MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/dell-smbios-smm.c b/drivers/platform/x86/dell-smbios-smm.c
index d6854d1..97c52a8 100644
--- a/drivers/platform/x86/dell-smbios-smm.c
+++ b/drivers/platform/x86/dell-smbios-smm.c
@@ -4,7 +4,7 @@
*
* Copyright (c) Red Hat <mjg@redhat.com>
* Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
- * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2014 Pali Rohár <pali@kernel.org>
* Copyright (c) 2017 Dell Inc.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/drivers/platform/x86/dell-smbios.h b/drivers/platform/x86/dell-smbios.h
index a7ff980..75fa8ea 100644
--- a/drivers/platform/x86/dell-smbios.h
+++ b/drivers/platform/x86/dell-smbios.h
@@ -4,7 +4,7 @@
*
* Copyright (c) Red Hat <mjg@redhat.com>
* Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
- * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2014 Pali Rohár <pali@kernel.org>
*
* Based on documentation in the libsmbios package:
* Copyright (C) 2005-2014 Dell Inc.
diff --git a/drivers/platform/x86/dell-smo8800.c b/drivers/platform/x86/dell-smo8800.c
index b531fe8..5d9304a 100644
--- a/drivers/platform/x86/dell-smo8800.c
+++ b/drivers/platform/x86/dell-smo8800.c
@@ -3,7 +3,7 @@
* dell-smo8800.c - Dell Latitude ACPI SMO88XX freefall sensor driver
*
* Copyright (C) 2012 Sonal Santan <sonal.santan@gmail.com>
- * Copyright (C) 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2014 Pali Rohár <pali@kernel.org>
*
* This is loosely based on lis3lv02d driver.
*/
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 6669db2..86e8dd6 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -3,7 +3,7 @@
* Dell WMI hotkeys
*
* Copyright (C) 2008 Red Hat <mjg@redhat.com>
- * Copyright (C) 2014-2015 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2014-2015 Pali Rohár <pali@kernel.org>
*
* Portions based on wistron_btns.c:
* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
@@ -29,7 +29,7 @@
#include "dell-wmi-descriptor.h"
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/bq2415x_charger.c b/drivers/power/supply/bq2415x_charger.c
index 532f6e4..a1f00ae 100644
--- a/drivers/power/supply/bq2415x_charger.c
+++ b/drivers/power/supply/bq2415x_charger.c
@@ -2,7 +2,7 @@
/*
* bq2415x charger driver
*
- * Copyright (C) 2011-2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2011-2013 Pali Rohár <pali@kernel.org>
*
* Datasheets:
* http://www.ti.com/product/bq24150
@@ -1788,6 +1788,6 @@
};
module_i2c_driver(bq2415x_driver);
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_DESCRIPTION("bq2415x charger driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 664e501..942c921 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -4,7 +4,7 @@
* Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
* Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
* Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de>
- * Copyright (C) 2011 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2011 Pali Rohár <pali@kernel.org>
* Copyright (C) 2017 Liam Breck <kernel@networkimprov.net>
*
* Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
diff --git a/drivers/power/supply/isp1704_charger.c b/drivers/power/supply/isp1704_charger.c
index 4812ac1..b6efc45 100644
--- a/drivers/power/supply/isp1704_charger.c
+++ b/drivers/power/supply/isp1704_charger.c
@@ -3,7 +3,7 @@
* ISP1704 USB Charger Detection driver
*
* Copyright (C) 2010 Nokia Corporation
- * Copyright (C) 2012 - 2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2012 - 2013 Pali Rohár <pali@kernel.org>
*/
#include <linux/kernel.h>
diff --git a/drivers/power/supply/rx51_battery.c b/drivers/power/supply/rx51_battery.c
index 8548b63..6e488ec 100644
--- a/drivers/power/supply/rx51_battery.c
+++ b/drivers/power/supply/rx51_battery.c
@@ -2,7 +2,7 @@
/*
* Nokia RX-51 battery driver
*
- * Copyright (C) 2012 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2012 Pali Rohár <pali@kernel.org>
*/
#include <linux/module.h>
@@ -278,6 +278,6 @@
module_platform_driver(rx51_battery_driver);
MODULE_ALIAS("platform:rx51-battery");
-MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
MODULE_DESCRIPTION("Nokia RX-51 battery driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/staging/gasket/gasket_core.c b/drivers/staging/gasket/gasket_core.c
index cd181a6..8e0575f 100644
--- a/drivers/staging/gasket/gasket_core.c
+++ b/drivers/staging/gasket/gasket_core.c
@@ -689,7 +689,7 @@
/* Make sure that no wrong flags are set. */
requested_permissions =
- (vma->vm_flags & (VM_WRITE | VM_READ | VM_EXEC));
+ (vma->vm_flags & VM_ACCESS_FLAGS);
if (requested_permissions & ~(bar_permissions)) {
dev_dbg(gasket_dev->dev,
"Attempting to map a region with requested permissions 0x%x, but region has permissions 0x%x.\n",
diff --git a/fs/filesystems.c b/fs/filesystems.c
index 77bf5f9..90b8d87 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -272,7 +272,9 @@
fs = __get_fs_type(name, len);
if (!fs && (request_module("fs-%.*s", len, name) == 0)) {
fs = __get_fs_type(name, len);
- WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name);
+ if (!fs)
+ pr_warn_once("request_module fs-%.*s succeeded, but still no fs?\n",
+ len, name);
}
if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c
index e6d5544..eeebe80c 100644
--- a/fs/hfsplus/attributes.c
+++ b/fs/hfsplus/attributes.c
@@ -292,6 +292,10 @@
return -ENOENT;
}
+ /* Avoid btree corruption */
+ hfs_bnode_read(fd->bnode, fd->search_key,
+ fd->keyoffset, fd->keylength);
+
err = hfs_brec_remove(fd);
if (err)
return err;
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 65b3abb..2f834ad 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7402,6 +7402,10 @@
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_inline_data *idata = &di->id2.i_data;
+ /* No need to punch hole beyond i_size. */
+ if (start >= i_size_read(inode))
+ return 0;
+
if (end > i_size_read(inode))
end = i_size_read(inode);
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 79781eb..70f5fdf 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -232,9 +232,12 @@
loff_t pos = m->index;
p = m->op->next(m, p, &m->index);
- if (pos == m->index)
- /* Buggy ->next function */
+ if (pos == m->index) {
+ pr_info_ratelimited("buggy seq_file .next function %ps "
+ "did not updated position index\n",
+ m->op->next);
m->index++;
+ }
if (!p || IS_ERR(p)) {
err = PTR_ERR(p);
break;
diff --git a/fs/udf/ecma_167.h b/fs/udf/ecma_167.h
index 3fd8546..736ebc5dc 100644
--- a/fs/udf/ecma_167.h
+++ b/fs/udf/ecma_167.h
@@ -5,7 +5,7 @@
* http://www.ecma.ch
*
* Copyright (c) 2001-2002 Ben Fennema
- * Copyright (c) 2017-2019 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2017-2019 Pali Rohár <pali@kernel.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
diff --git a/fs/udf/osta_udf.h b/fs/udf/osta_udf.h
index 35e61b2..d5fbfab 100644
--- a/fs/udf/osta_udf.h
+++ b/fs/udf/osta_udf.h
@@ -5,7 +5,7 @@
* http://www.osta.org
*
* Copyright (c) 2001-2004 Ben Fennema
- * Copyright (c) 2017-2019 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (c) 2017-2019 Pali Rohár <pali@kernel.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
diff --git a/include/linux/cma.h b/include/linux/cma.h
index 190184b..6ff79fe 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -4,6 +4,7 @@
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/numa.h>
/*
* There is always at least global CMA area and a few optional
@@ -24,10 +25,19 @@
extern unsigned long cma_get_size(const struct cma *cma);
extern const char *cma_get_name(const struct cma *cma);
-extern int __init cma_declare_contiguous(phys_addr_t base,
+extern int __init cma_declare_contiguous_nid(phys_addr_t base,
phys_addr_t size, phys_addr_t limit,
phys_addr_t alignment, unsigned int order_per_bit,
- bool fixed, const char *name, struct cma **res_cma);
+ bool fixed, const char *name, struct cma **res_cma,
+ int nid);
+static inline int __init cma_declare_contiguous(phys_addr_t base,
+ phys_addr_t size, phys_addr_t limit,
+ phys_addr_t alignment, unsigned int order_per_bit,
+ bool fixed, const char *name, struct cma **res_cma)
+{
+ return cma_declare_contiguous_nid(base, size, limit, alignment,
+ order_per_bit, fixed, name, res_cma, NUMA_NO_NODE);
+}
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
const char *name,
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 5ea0587..43a1cef 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -895,4 +895,16 @@
return ptl;
}
+#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_CMA)
+extern void __init hugetlb_cma_reserve(int order);
+extern void __init hugetlb_cma_check(void);
+#else
+static inline __init void hugetlb_cma_reserve(int order)
+{
+}
+static inline __init void hugetlb_cma_check(void)
+{
+}
+#endif
+
#endif /* _LINUX_HUGETLB_H */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 079d17d..6bc37a7 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -348,6 +348,9 @@
phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
phys_addr_t start, phys_addr_t end);
+phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
+ phys_addr_t align, phys_addr_t start,
+ phys_addr_t end, int nid, bool exact_nid);
phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index ef55115..93d9ada 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -58,13 +58,14 @@
};
/*
- * Restrictions for the memory hotplug:
- * flags: MHP_ flags
- * altmap: alternative allocator for memmap array
+ * Extended parameters for memory hotplug:
+ * altmap: alternative allocator for memmap array (optional)
+ * pgprot: page protection flags to apply to newly created page tables
+ * (required)
*/
-struct mhp_restrictions {
- unsigned long flags;
+struct mhp_params {
struct vmem_altmap *altmap;
+ pgprot_t pgprot;
};
/*
@@ -114,7 +115,7 @@
extern int try_online_node(int nid);
extern int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions);
+ struct mhp_params *params);
extern u64 max_mem_size;
extern int memhp_online_type_from_str(const char *str);
@@ -135,17 +136,17 @@
/* reasonably generic interface to expand the physical pages */
extern int __add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
- struct mhp_restrictions *restrictions);
+ struct mhp_params *params);
#ifndef CONFIG_ARCH_HAS_ADD_PAGES
static inline int add_pages(int nid, unsigned long start_pfn,
- unsigned long nr_pages, struct mhp_restrictions *restrictions)
+ unsigned long nr_pages, struct mhp_params *params)
{
- return __add_pages(nid, start_pfn, nr_pages, restrictions);
+ return __add_pages(nid, start_pfn, nr_pages, params);
}
#else /* ARCH_HAS_ADD_PAGES */
int add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
- struct mhp_restrictions *restrictions);
+ struct mhp_params *params);
#endif /* ARCH_HAS_ADD_PAGES */
#ifdef CONFIG_NUMA
diff --git a/include/linux/mm.h b/include/linux/mm.h
index e2f938c..5a32342 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -343,6 +343,20 @@
/* Bits set in the VMA until the stack is in its final location */
#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ)
+#define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
+
+/* Common data flag combinations */
+#define VM_DATA_FLAGS_TSK_EXEC (VM_READ | VM_WRITE | TASK_EXEC | \
+ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_FLAGS_NON_EXEC (VM_READ | VM_WRITE | VM_MAYREAD | \
+ VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_FLAGS_EXEC (VM_READ | VM_WRITE | VM_EXEC | \
+ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#ifndef VM_DATA_DEFAULT_FLAGS /* arch can override this */
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_EXEC
+#endif
+
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
#endif
@@ -355,6 +369,10 @@
#define VM_STACK_FLAGS (VM_STACK | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT)
+/* VMA basic access permission flags */
+#define VM_ACCESS_FLAGS (VM_READ | VM_WRITE | VM_EXEC)
+
+
/*
* Special vmas that are non-mergable, non-mlock()able.
*/
@@ -632,7 +650,7 @@
static inline bool vma_is_accessible(struct vm_area_struct *vma)
{
- return vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC);
+ return vma->vm_flags & VM_ACCESS_FLAGS;
}
#ifdef CONFIG_SHMEM
@@ -1909,6 +1927,18 @@
}
#endif
+#ifndef CONFIG_ARCH_HAS_PTE_SPECIAL
+static inline int pte_special(pte_t pte)
+{
+ return 0;
+}
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+ return pte;
+}
+#endif
+
#ifndef CONFIG_ARCH_HAS_PTE_DEVMAP
static inline int pte_devmap(pte_t pte)
{
@@ -2689,6 +2719,8 @@
int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
unsigned long pfn, unsigned long size, pgprot_t);
int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
+int vm_insert_pages(struct vm_area_struct *vma, unsigned long addr,
+ struct page **pages, unsigned long *num);
int vm_map_pages(struct vm_area_struct *vma, struct page **pages,
unsigned long num);
int vm_map_pages_zero(struct vm_area_struct *vma, struct page **pages,
diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h
index 7a91b35..4ca0832 100644
--- a/include/linux/power/bq2415x_charger.h
+++ b/include/linux/power/bq2415x_charger.h
@@ -2,7 +2,7 @@
/*
* bq2415x charger driver
*
- * Copyright (C) 2011-2013 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright (C) 2011-2013 Pali Rohár <pali@kernel.org>
*/
#ifndef BQ2415X_CHARGER_H
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 03a3893..6d45488 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -501,7 +501,7 @@
* :ref:`Documentation/core-api/mm-api.rst <mm-api-gfp-flags>`
*
* The recommended usage of the @flags is described at
- * :ref:`Documentation/core-api/memory-allocation.rst <memory-allocation>`
+ * :ref:`Documentation/core-api/memory-allocation.rst <memory_allocation>`
*
* Below is a brief outline of the most useful GFP flags
*
diff --git a/ipc/util.c b/ipc/util.c
index 97638eb..7acccfd 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -764,13 +764,13 @@
total++;
}
+ *new_pos = pos + 1;
if (total >= ids->in_use)
return NULL;
for (; pos < ipc_mni; pos++) {
ipc = idr_find(&ids->ipcs_idr, pos);
if (ipc != NULL) {
- *new_pos = pos + 1;
rcu_read_lock();
ipc_lock_object(ipc);
return ipc;
diff --git a/kernel/gcov/fs.c b/kernel/gcov/fs.c
index 5e891c3..82babf5 100644
--- a/kernel/gcov/fs.c
+++ b/kernel/gcov/fs.c
@@ -108,9 +108,9 @@
{
struct gcov_iterator *iter = data;
+ (*pos)++;
if (gcov_iter_next(iter))
return NULL;
- (*pos)++;
return iter;
}
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 8b2b311..37c3c4b 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -120,7 +120,7 @@
* invoke it.
*
* If module auto-loading support is disabled then this function
- * becomes a no-operation.
+ * simply returns -ENOENT.
*/
int __request_module(bool wait, const char *fmt, ...)
{
@@ -137,7 +137,7 @@
WARN_ON_ONCE(wait && current_is_async());
if (!modprobe_path[0])
- return 0;
+ return -ENOENT;
va_start(args, fmt);
ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args);
diff --git a/mm/cma.c b/mm/cma.c
index be55d19..0463ad2 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -220,7 +220,7 @@
}
/**
- * cma_declare_contiguous() - reserve custom contiguous area
+ * cma_declare_contiguous_nid() - reserve custom contiguous area
* @base: Base address of the reserved area optional, use 0 for any
* @size: Size of the reserved area (in bytes),
* @limit: End address of the reserved memory (optional, 0 for any).
@@ -229,6 +229,7 @@
* @fixed: hint about where to place the reserved area
* @name: The name of the area. See function cma_init_reserved_mem()
* @res_cma: Pointer to store the created cma region.
+ * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
*
* This function reserves memory from early allocator. It should be
* called by arch specific code once the early allocator (memblock or bootmem)
@@ -238,10 +239,11 @@
* If @fixed is true, reserve contiguous area at exactly @base. If false,
* reserve in range from @base to @limit.
*/
-int __init cma_declare_contiguous(phys_addr_t base,
+int __init cma_declare_contiguous_nid(phys_addr_t base,
phys_addr_t size, phys_addr_t limit,
phys_addr_t alignment, unsigned int order_per_bit,
- bool fixed, const char *name, struct cma **res_cma)
+ bool fixed, const char *name, struct cma **res_cma,
+ int nid)
{
phys_addr_t memblock_end = memblock_end_of_DRAM();
phys_addr_t highmem_start;
@@ -336,14 +338,14 @@
* memory in case of failure.
*/
if (base < highmem_start && limit > highmem_start) {
- addr = memblock_phys_alloc_range(size, alignment,
- highmem_start, limit);
+ addr = memblock_alloc_range_nid(size, alignment,
+ highmem_start, limit, nid, false);
limit = highmem_start;
}
if (!addr) {
- addr = memblock_phys_alloc_range(size, alignment, base,
- limit);
+ addr = memblock_alloc_range_nid(size, alignment, base,
+ limit, nid, false);
if (!addr) {
ret = -ENOMEM;
goto err;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index f5fb53f..cd45915 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -28,6 +28,7 @@
#include <linux/jhash.h>
#include <linux/numa.h>
#include <linux/llist.h>
+#include <linux/cma.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -44,6 +45,9 @@
int hugetlb_max_hstate __read_mostly;
unsigned int default_hstate_idx;
struct hstate hstates[HUGE_MAX_HSTATE];
+
+static struct cma *hugetlb_cma[MAX_NUMNODES];
+
/*
* Minimum page order among possible hugepage sizes, set to a proper value
* at boot time.
@@ -1228,6 +1232,14 @@
static void free_gigantic_page(struct page *page, unsigned int order)
{
+ /*
+ * If the page isn't allocated using the cma allocator,
+ * cma_release() returns false.
+ */
+ if (IS_ENABLED(CONFIG_CMA) &&
+ cma_release(hugetlb_cma[page_to_nid(page)], page, 1 << order))
+ return;
+
free_contig_range(page_to_pfn(page), 1 << order);
}
@@ -1237,6 +1249,21 @@
{
unsigned long nr_pages = 1UL << huge_page_order(h);
+ if (IS_ENABLED(CONFIG_CMA)) {
+ struct page *page;
+ int node;
+
+ for_each_node_mask(node, *nodemask) {
+ if (!hugetlb_cma[node])
+ continue;
+
+ page = cma_alloc(hugetlb_cma[node], nr_pages,
+ huge_page_order(h), true);
+ if (page)
+ return page;
+ }
+ }
+
return alloc_contig_pages(nr_pages, gfp_mask, nid, nodemask);
}
@@ -1281,8 +1308,14 @@
set_compound_page_dtor(page, NULL_COMPOUND_DTOR);
set_page_refcounted(page);
if (hstate_is_gigantic(h)) {
+ /*
+ * Temporarily drop the hugetlb_lock, because
+ * we might block in free_gigantic_page().
+ */
+ spin_unlock(&hugetlb_lock);
destroy_compound_gigantic_page(page, huge_page_order(h));
free_gigantic_page(page, huge_page_order(h));
+ spin_lock(&hugetlb_lock);
} else {
__free_pages(page, huge_page_order(h));
}
@@ -2539,6 +2572,10 @@
for (i = 0; i < h->max_huge_pages; ++i) {
if (hstate_is_gigantic(h)) {
+ if (IS_ENABLED(CONFIG_CMA) && hugetlb_cma[0]) {
+ pr_warn_once("HugeTLB: hugetlb_cma is enabled, skip boot time allocation\n");
+ break;
+ }
if (!alloc_bootmem_huge_page(h))
break;
} else if (!alloc_pool_huge_page(h,
@@ -3194,6 +3231,7 @@
default_hstate.max_huge_pages = default_hstate_max_huge_pages;
}
+ hugetlb_cma_check();
hugetlb_init_hstates();
gather_bootmem_prealloc();
report_hugepages();
@@ -5506,3 +5544,74 @@
spin_unlock(&hugetlb_lock);
}
}
+
+#ifdef CONFIG_CMA
+static unsigned long hugetlb_cma_size __initdata;
+static bool cma_reserve_called __initdata;
+
+static int __init cmdline_parse_hugetlb_cma(char *p)
+{
+ hugetlb_cma_size = memparse(p, &p);
+ return 0;
+}
+
+early_param("hugetlb_cma", cmdline_parse_hugetlb_cma);
+
+void __init hugetlb_cma_reserve(int order)
+{
+ unsigned long size, reserved, per_node;
+ int nid;
+
+ cma_reserve_called = true;
+
+ if (!hugetlb_cma_size)
+ return;
+
+ if (hugetlb_cma_size < (PAGE_SIZE << order)) {
+ pr_warn("hugetlb_cma: cma area should be at least %lu MiB\n",
+ (PAGE_SIZE << order) / SZ_1M);
+ return;
+ }
+
+ /*
+ * If 3 GB area is requested on a machine with 4 numa nodes,
+ * let's allocate 1 GB on first three nodes and ignore the last one.
+ */
+ per_node = DIV_ROUND_UP(hugetlb_cma_size, nr_online_nodes);
+ pr_info("hugetlb_cma: reserve %lu MiB, up to %lu MiB per node\n",
+ hugetlb_cma_size / SZ_1M, per_node / SZ_1M);
+
+ reserved = 0;
+ for_each_node_state(nid, N_ONLINE) {
+ int res;
+
+ size = min(per_node, hugetlb_cma_size - reserved);
+ size = round_up(size, PAGE_SIZE << order);
+
+ res = cma_declare_contiguous_nid(0, size, 0, PAGE_SIZE << order,
+ 0, false, "hugetlb",
+ &hugetlb_cma[nid], nid);
+ if (res) {
+ pr_warn("hugetlb_cma: reservation failed: err %d, node %d",
+ res, nid);
+ continue;
+ }
+
+ reserved += size;
+ pr_info("hugetlb_cma: reserved %lu MiB on node %d\n",
+ size / SZ_1M, nid);
+
+ if (reserved >= hugetlb_cma_size)
+ break;
+ }
+}
+
+void __init hugetlb_cma_check(void)
+{
+ if (!hugetlb_cma_size || cma_reserve_called)
+ return;
+
+ pr_warn("hugetlb_cma: the option isn't supported by current arch\n");
+}
+
+#endif /* CONFIG_CMA */
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d06bba..c79ba6f 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1349,7 +1349,7 @@
* Return:
* Physical address of allocated memory block on success, %0 on failure.
*/
-static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
+phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
phys_addr_t align, phys_addr_t start,
phys_addr_t end, int nid,
bool exact_nid)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 05b4ec2..5beea03 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2336,6 +2336,9 @@
usage = page_counter_read(&memcg->memory);
high = READ_ONCE(memcg->high);
+ if (usage <= high)
+ continue;
+
/*
* Prevent division by 0 in overage calculation by acting as if
* it was a threshold of 1 page
diff --git a/mm/memory.c b/mm/memory.c
index 19874d1..f703fe8 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1419,8 +1419,7 @@
}
EXPORT_SYMBOL_GPL(zap_vma_ptes);
-pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
- spinlock_t **ptl)
+static pmd_t *walk_to_pmd(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
p4d_t *p4d;
@@ -1439,9 +1438,40 @@
return NULL;
VM_BUG_ON(pmd_trans_huge(*pmd));
+ return pmd;
+}
+
+pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
+ spinlock_t **ptl)
+{
+ pmd_t *pmd = walk_to_pmd(mm, addr);
+
+ if (!pmd)
+ return NULL;
return pte_alloc_map_lock(mm, pmd, addr, ptl);
}
+static int validate_page_before_insert(struct page *page)
+{
+ if (PageAnon(page) || PageSlab(page) || page_has_type(page))
+ return -EINVAL;
+ flush_dcache_page(page);
+ return 0;
+}
+
+static int insert_page_into_pte_locked(struct mm_struct *mm, pte_t *pte,
+ unsigned long addr, struct page *page, pgprot_t prot)
+{
+ if (!pte_none(*pte))
+ return -EBUSY;
+ /* Ok, finally just insert the thing.. */
+ get_page(page);
+ inc_mm_counter_fast(mm, mm_counter_file(page));
+ page_add_file_rmap(page, false);
+ set_pte_at(mm, addr, pte, mk_pte(page, prot));
+ return 0;
+}
+
/*
* This is the old fallback for page remapping.
*
@@ -1457,31 +1487,135 @@
pte_t *pte;
spinlock_t *ptl;
- retval = -EINVAL;
- if (PageAnon(page) || PageSlab(page) || page_has_type(page))
+ retval = validate_page_before_insert(page);
+ if (retval)
goto out;
retval = -ENOMEM;
- flush_dcache_page(page);
pte = get_locked_pte(mm, addr, &ptl);
if (!pte)
goto out;
- retval = -EBUSY;
- if (!pte_none(*pte))
- goto out_unlock;
-
- /* Ok, finally just insert the thing.. */
- get_page(page);
- inc_mm_counter_fast(mm, mm_counter_file(page));
- page_add_file_rmap(page, false);
- set_pte_at(mm, addr, pte, mk_pte(page, prot));
-
- retval = 0;
-out_unlock:
+ retval = insert_page_into_pte_locked(mm, pte, addr, page, prot);
pte_unmap_unlock(pte, ptl);
out:
return retval;
}
+#ifdef pte_index
+static int insert_page_in_batch_locked(struct mm_struct *mm, pmd_t *pmd,
+ unsigned long addr, struct page *page, pgprot_t prot)
+{
+ int err;
+
+ if (!page_count(page))
+ return -EINVAL;
+ err = validate_page_before_insert(page);
+ return err ? err : insert_page_into_pte_locked(
+ mm, pte_offset_map(pmd, addr), addr, page, prot);
+}
+
+/* insert_pages() amortizes the cost of spinlock operations
+ * when inserting pages in a loop. Arch *must* define pte_index.
+ */
+static int insert_pages(struct vm_area_struct *vma, unsigned long addr,
+ struct page **pages, unsigned long *num, pgprot_t prot)
+{
+ pmd_t *pmd = NULL;
+ spinlock_t *pte_lock = NULL;
+ struct mm_struct *const mm = vma->vm_mm;
+ unsigned long curr_page_idx = 0;
+ unsigned long remaining_pages_total = *num;
+ unsigned long pages_to_write_in_pmd;
+ int ret;
+more:
+ ret = -EFAULT;
+ pmd = walk_to_pmd(mm, addr);
+ if (!pmd)
+ goto out;
+
+ pages_to_write_in_pmd = min_t(unsigned long,
+ remaining_pages_total, PTRS_PER_PTE - pte_index(addr));
+
+ /* Allocate the PTE if necessary; takes PMD lock once only. */
+ ret = -ENOMEM;
+ if (pte_alloc(mm, pmd))
+ goto out;
+ pte_lock = pte_lockptr(mm, pmd);
+
+ while (pages_to_write_in_pmd) {
+ int pte_idx = 0;
+ const int batch_size = min_t(int, pages_to_write_in_pmd, 8);
+
+ spin_lock(pte_lock);
+ for (; pte_idx < batch_size; ++pte_idx) {
+ int err = insert_page_in_batch_locked(mm, pmd,
+ addr, pages[curr_page_idx], prot);
+ if (unlikely(err)) {
+ spin_unlock(pte_lock);
+ ret = err;
+ remaining_pages_total -= pte_idx;
+ goto out;
+ }
+ addr += PAGE_SIZE;
+ ++curr_page_idx;
+ }
+ spin_unlock(pte_lock);
+ pages_to_write_in_pmd -= batch_size;
+ remaining_pages_total -= batch_size;
+ }
+ if (remaining_pages_total)
+ goto more;
+ ret = 0;
+out:
+ *num = remaining_pages_total;
+ return ret;
+}
+#endif /* ifdef pte_index */
+
+/**
+ * vm_insert_pages - insert multiple pages into user vma, batching the pmd lock.
+ * @vma: user vma to map to
+ * @addr: target start user address of these pages
+ * @pages: source kernel pages
+ * @num: in: number of pages to map. out: number of pages that were *not*
+ * mapped. (0 means all pages were successfully mapped).
+ *
+ * Preferred over vm_insert_page() when inserting multiple pages.
+ *
+ * In case of error, we may have mapped a subset of the provided
+ * pages. It is the caller's responsibility to account for this case.
+ *
+ * The same restrictions apply as in vm_insert_page().
+ */
+int vm_insert_pages(struct vm_area_struct *vma, unsigned long addr,
+ struct page **pages, unsigned long *num)
+{
+#ifdef pte_index
+ const unsigned long end_addr = addr + (*num * PAGE_SIZE) - 1;
+
+ if (addr < vma->vm_start || end_addr >= vma->vm_end)
+ return -EFAULT;
+ if (!(vma->vm_flags & VM_MIXEDMAP)) {
+ BUG_ON(down_read_trylock(&vma->vm_mm->mmap_sem));
+ BUG_ON(vma->vm_flags & VM_PFNMAP);
+ vma->vm_flags |= VM_MIXEDMAP;
+ }
+ /* Defer page refcount checking till we're about to map that page. */
+ return insert_pages(vma, addr, pages, num, vma->vm_page_prot);
+#else
+ unsigned long idx = 0, pgcount = *num;
+ int err;
+
+ for (; idx < pgcount; ++idx) {
+ err = vm_insert_page(vma, addr + (PAGE_SIZE * idx), pages[idx]);
+ if (err)
+ break;
+ }
+ *num = pgcount - idx;
+ return err;
+#endif /* ifdef pte_index */
+}
+EXPORT_SYMBOL(vm_insert_pages);
+
/**
* vm_insert_page - insert single page into user vma
* @vma: user vma to map to
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 635e8e2..fc0aad0 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -304,12 +304,15 @@
* add the new pages.
*/
int __ref __add_pages(int nid, unsigned long pfn, unsigned long nr_pages,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
const unsigned long end_pfn = pfn + nr_pages;
unsigned long cur_nr_pages;
int err;
- struct vmem_altmap *altmap = restrictions->altmap;
+ struct vmem_altmap *altmap = params->altmap;
+
+ if (WARN_ON_ONCE(!params->pgprot.pgprot))
+ return -EINVAL;
err = check_hotplug_memory_addressable(pfn, nr_pages);
if (err)
@@ -1002,7 +1005,7 @@
*/
int __ref add_memory_resource(int nid, struct resource *res)
{
- struct mhp_restrictions restrictions = {};
+ struct mhp_params params = { .pgprot = PAGE_KERNEL };
u64 start, size;
bool new_node = false;
int ret;
@@ -1030,7 +1033,7 @@
new_node = ret;
/* call arch's memory hotadd */
- ret = arch_add_memory(nid, start, size, &restrictions);
+ ret = arch_add_memory(nid, start, size, ¶ms);
if (ret < 0)
goto error;
diff --git a/mm/memremap.c b/mm/memremap.c
index bbf457c..03e38b7 100644
--- a/mm/memremap.c
+++ b/mm/memremap.c
@@ -184,13 +184,13 @@
{
struct resource *res = &pgmap->res;
struct dev_pagemap *conflict_pgmap;
- struct mhp_restrictions restrictions = {
+ struct mhp_params params = {
/*
* We do not want any optional features only our own memmap
*/
.altmap = pgmap_altmap(pgmap),
+ .pgprot = PAGE_KERNEL,
};
- pgprot_t pgprot = PAGE_KERNEL;
int error, is_ram;
bool need_devmap_managed = true;
@@ -217,7 +217,10 @@
}
break;
case MEMORY_DEVICE_DEVDAX:
+ need_devmap_managed = false;
+ break;
case MEMORY_DEVICE_PCI_P2PDMA:
+ params.pgprot = pgprot_noncached(params.pgprot);
need_devmap_managed = false;
break;
default:
@@ -282,8 +285,8 @@
if (nid < 0)
nid = numa_mem_id();
- error = track_pfn_remap(NULL, &pgprot, PHYS_PFN(res->start), 0,
- resource_size(res));
+ error = track_pfn_remap(NULL, ¶ms.pgprot, PHYS_PFN(res->start),
+ 0, resource_size(res));
if (error)
goto err_pfn_remap;
@@ -302,7 +305,7 @@
*/
if (pgmap->type == MEMORY_DEVICE_PRIVATE) {
error = add_pages(nid, PHYS_PFN(res->start),
- PHYS_PFN(resource_size(res)), &restrictions);
+ PHYS_PFN(resource_size(res)), ¶ms);
} else {
error = kasan_add_zero_shadow(__va(res->start), resource_size(res));
if (error) {
@@ -311,7 +314,7 @@
}
error = arch_add_memory(nid, res->start, resource_size(res),
- &restrictions);
+ ¶ms);
}
if (!error) {
@@ -319,7 +322,7 @@
zone = &NODE_DATA(nid)->node_zones[ZONE_DEVICE];
move_pfn_range_to_zone(zone, PHYS_PFN(res->start),
- PHYS_PFN(resource_size(res)), restrictions.altmap);
+ PHYS_PFN(resource_size(res)), params.altmap);
}
mem_hotplug_done();
diff --git a/mm/mmap.c b/mm/mmap.c
index 8d77dbb..f609e9e 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1224,7 +1224,7 @@
return a->vm_end == b->vm_start &&
mpol_equal(vma_policy(a), vma_policy(b)) &&
a->vm_file == b->vm_file &&
- !((a->vm_flags ^ b->vm_flags) & ~(VM_READ|VM_WRITE|VM_EXEC|VM_SOFTDIRTY)) &&
+ !((a->vm_flags ^ b->vm_flags) & ~(VM_ACCESS_FLAGS | VM_SOFTDIRTY)) &&
b->vm_pgoff == a->vm_pgoff + ((b->vm_start - a->vm_start) >> PAGE_SHIFT);
}
@@ -2123,6 +2123,7 @@
info.low_limit = mm->mmap_base;
info.high_limit = mmap_end;
info.align_mask = 0;
+ info.align_offset = 0;
return vm_unmapped_area(&info);
}
#endif
@@ -2164,6 +2165,7 @@
info.low_limit = max(PAGE_SIZE, mmap_min_addr);
info.high_limit = arch_get_mmap_base(addr, mm->mmap_base);
info.align_mask = 0;
+ info.align_offset = 0;
addr = vm_unmapped_area(&info);
/*
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 1d823b05..494192ca 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -419,7 +419,7 @@
*/
if (arch_has_pfn_modify_check() &&
(vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP)) &&
- (newflags & (VM_READ|VM_WRITE|VM_EXEC)) == 0) {
+ (newflags & VM_ACCESS_FLAGS) == 0) {
pgprot_t new_pgprot = vm_get_page_prot(newflags);
error = walk_page_range(current->mm, start, end,
@@ -598,7 +598,7 @@
newflags |= (vma->vm_flags & ~mask_off_old_flags);
/* newflags >> 4 shift VM_MAY% in place of VM_% */
- if ((newflags & ~(newflags >> 4)) & (VM_READ | VM_WRITE | VM_EXEC)) {
+ if ((newflags & ~(newflags >> 4)) & VM_ACCESS_FLAGS) {
error = -EACCES;
goto out;
}
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 114c56c..69827d4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -103,8 +103,8 @@
struct zone *zone;
struct work_struct work;
};
-DEFINE_MUTEX(pcpu_drain_mutex);
-DEFINE_PER_CPU(struct pcpu_drain, pcpu_drain);
+static DEFINE_MUTEX(pcpu_drain_mutex);
+static DEFINE_PER_CPU(struct pcpu_drain, pcpu_drain);
#ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
volatile unsigned long latent_entropy __latent_entropy;
@@ -3224,6 +3224,7 @@
* __putback_isolated_page - Return a now-isolated page back where we got it
* @page: Page that was isolated
* @order: Order of the isolated page
+ * @mt: The page's pageblock's migratetype
*
* This function is meant to return a page pulled from the free lists via
* __isolate_free_page back to the free lists they were pulled from.
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 93ec4a5..23c7500e 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -731,7 +731,7 @@
/*
* We need to grab blocking locks. Bounce to ->work. The
* work item shares the space with the RCU head and can't be
- * initialized eariler.
+ * initialized earlier.
*/
INIT_WORK(&s->memcg_params.work, kmemcg_workfn);
queue_work(memcg_kmem_cache_wq, &s->memcg_params.work);
diff --git a/tools/laptop/freefall/freefall.c b/tools/laptop/freefall/freefall.c
index d29a86c..d77d786 100644
--- a/tools/laptop/freefall/freefall.c
+++ b/tools/laptop/freefall/freefall.c
@@ -4,7 +4,7 @@
* Copyright 2008 Eric Piel
* Copyright 2009 Pavel Machek <pavel@ucw.cz>
* Copyright 2012 Sonal Santan
- * Copyright 2014 Pali Rohár <pali.rohar@gmail.com>
+ * Copyright 2014 Pali Rohár <pali@kernel.org>
*/
#include <stdio.h>
diff --git a/tools/testing/selftests/kmod/kmod.sh b/tools/testing/selftests/kmod/kmod.sh
index 8b944cf..3702dbc 100755
--- a/tools/testing/selftests/kmod/kmod.sh
+++ b/tools/testing/selftests/kmod/kmod.sh
@@ -61,6 +61,8 @@
ALL_TESTS="$ALL_TESTS 0007:5:1"
ALL_TESTS="$ALL_TESTS 0008:150:1"
ALL_TESTS="$ALL_TESTS 0009:150:1"
+ALL_TESTS="$ALL_TESTS 0010:1:1"
+ALL_TESTS="$ALL_TESTS 0011:1:1"
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
@@ -149,6 +151,7 @@
test_finish()
{
+ echo "$MODPROBE" > /proc/sys/kernel/modprobe
echo "Test completed"
}
@@ -443,6 +446,30 @@
config_expect_result ${FUNCNAME[0]} SUCCESS
}
+kmod_test_0010()
+{
+ kmod_defaults_driver
+ config_num_threads 1
+ echo "/KMOD_TEST_NONEXISTENT" > /proc/sys/kernel/modprobe
+ config_trigger ${FUNCNAME[0]}
+ config_expect_result ${FUNCNAME[0]} -ENOENT
+ echo "$MODPROBE" > /proc/sys/kernel/modprobe
+}
+
+kmod_test_0011()
+{
+ kmod_defaults_driver
+ config_num_threads 1
+ # This causes the kernel to not even try executing modprobe. The error
+ # code is still -ENOENT like when modprobe doesn't exist, so we can't
+ # easily test for the exact difference. But this still is a useful test
+ # since there was a bug where request_module() returned 0 in this case.
+ echo > /proc/sys/kernel/modprobe
+ config_trigger ${FUNCNAME[0]}
+ config_expect_result ${FUNCNAME[0]} -ENOENT
+ echo "$MODPROBE" > /proc/sys/kernel/modprobe
+}
+
list_tests()
{
echo "Test ID list:"
@@ -460,6 +487,8 @@
echo "0007 x $(get_test_count 0007) - multithreaded tests with default setup test request_module() and get_fs_type()"
echo "0008 x $(get_test_count 0008) - multithreaded - push kmod_concurrent over max_modprobes for request_module()"
echo "0009 x $(get_test_count 0009) - multithreaded - push kmod_concurrent over max_modprobes for get_fs_type()"
+ echo "0010 x $(get_test_count 0010) - test nonexistent modprobe path"
+ echo "0011 x $(get_test_count 0011) - test completely disabling module autoloading"
}
usage()
@@ -505,18 +534,23 @@
fi
}
-function get_test_count()
+function get_test_data()
{
test_num $1
- TEST_DATA=$(echo $ALL_TESTS | awk '{print $'$1'}')
+ local field_num=$(echo $1 | sed 's/^0*//')
+ echo $ALL_TESTS | awk '{print $'$field_num'}'
+}
+
+function get_test_count()
+{
+ TEST_DATA=$(get_test_data $1)
LAST_TWO=${TEST_DATA#*:*}
echo ${LAST_TWO%:*}
}
function get_test_enabled()
{
- test_num $1
- TEST_DATA=$(echo $ALL_TESTS | awk '{print $'$1'}')
+ TEST_DATA=$(get_test_data $1)
echo ${TEST_DATA#*:*:}
}
@@ -611,6 +645,7 @@
allow_user_defaults
load_req_mod
+MODPROBE=$(</proc/sys/kernel/modprobe)
trap "test_finish" EXIT
parse_args $@
