Merge branch 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "We have one important patch from Dave Anglin and myself which fixes
  PTE/TLB race conditions which caused random segmentation faults on our
  debian buildd servers, and one patch from Alex Ivanov which speeds up
  the graphical text console on the STI framebuffer driver"

* 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
  stifb: Implement hardware accelerated copyarea
diff --git a/MAINTAINERS b/MAINTAINERS
index 0d70760..10438be 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6173,7 +6173,7 @@
 W:	http://www.penguinppc.org/
 L:	linuxppc-dev@lists.ozlabs.org
 Q:	http://patchwork.ozlabs.org/project/linuxppc-dev/list/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
 S:	Supported
 F:	Documentation/powerpc/
 F:	arch/powerpc/
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0f6edb1..318175f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -23,9 +23,9 @@
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select COMMON_CLK
-	select EDAC_SUPPORT
 	select CPU_PM if (SUSPEND || CPU_IDLE)
 	select DCACHE_WORD_ACCESS
+	select EDAC_SUPPORT
 	select GENERIC_ALLOCATOR
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index f38c94f..4e17e7e 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -83,6 +83,7 @@
 CONFIG_ATA=y
 CONFIG_SATA_AHCI=y
 CONFIG_SATA_AHCI_PLATFORM=y
+CONFIG_AHCI_CEVA=y
 CONFIG_AHCI_XGENE=y
 CONFIG_PATA_PLATFORM=y
 CONFIG_PATA_OF_PLATFORM=y
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index 39248d3..406485e 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -19,6 +19,14 @@
 #include <asm/psci.h>
 #include <asm/smp_plat.h>
 
+/* Macros for consistency checks of the GICC subtable of MADT */
+#define ACPI_MADT_GICC_LENGTH	\
+	(acpi_gbl_FADT.header.revision < 6 ? 76 : 80)
+
+#define BAD_MADT_GICC_ENTRY(entry, end)						\
+	(!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) ||	\
+	 (entry)->header.length != ACPI_MADT_GICC_LENGTH)
+
 /* Basic configuration for ACPI */
 #ifdef	CONFIG_ACPI
 /* ACPI table mapping after acpi_gbl_permanent_mmap is set */
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index a7691a3..f860bfd 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -352,8 +352,8 @@
 	// TODO: add support for undefined instructions in kernel mode
 	enable_dbg
 	mov	x0, sp
+	mov	x2, x1
 	mov	x1, #BAD_SYNC
-	mrs	x2, esr_el1
 	b	bad_mode
 ENDPROC(el1_sync)
 
@@ -553,7 +553,7 @@
 	ct_user_exit
 	mov	x0, sp
 	mov	x1, #BAD_SYNC
-	mrs	x2, esr_el1
+	mov	x2, x25
 	bl	bad_mode
 	b	ret_to_user
 ENDPROC(el0_sync)
diff --git a/arch/arm64/kernel/entry32.S b/arch/arm64/kernel/entry32.S
index bd9bfaa..f332d5d 100644
--- a/arch/arm64/kernel/entry32.S
+++ b/arch/arm64/kernel/entry32.S
@@ -32,13 +32,11 @@
 
 ENTRY(compat_sys_sigreturn_wrapper)
 	mov	x0, sp
-	mov	x27, #0		// prevent syscall restart handling (why)
 	b	compat_sys_sigreturn
 ENDPROC(compat_sys_sigreturn_wrapper)
 
 ENTRY(compat_sys_rt_sigreturn_wrapper)
 	mov	x0, sp
-	mov	x27, #0		// prevent syscall restart handling (why)
 	b	compat_sys_rt_sigreturn
 ENDPROC(compat_sys_rt_sigreturn_wrapper)
 
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 695801a..50fb469 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -438,7 +438,7 @@
 	struct acpi_madt_generic_interrupt *processor;
 
 	processor = (struct acpi_madt_generic_interrupt *)header;
-	if (BAD_MADT_ENTRY(processor, end))
+	if (BAD_MADT_GICC_ENTRY(processor, end))
 		return -EINVAL;
 
 	acpi_table_print_madt_entry(header);
diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile
index 9d84feb..773d37a 100644
--- a/arch/arm64/mm/Makefile
+++ b/arch/arm64/mm/Makefile
@@ -4,5 +4,3 @@
 				   context.o proc.o pageattr.o
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_ARM64_PTDUMP)	+= dump.o
-
-CFLAGS_mmu.o			:= -I$(srctree)/scripts/dtc/libfdt/
diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S
index ccde8f0..112ccf4 100644
--- a/arch/powerpc/kernel/idle_power7.S
+++ b/arch/powerpc/kernel/idle_power7.S
@@ -52,6 +52,22 @@
 	.text
 
 /*
+ * Used by threads when the lock bit of core_idle_state is set.
+ * Threads will spin in HMT_LOW until the lock bit is cleared.
+ * r14 - pointer to core_idle_state
+ * r15 - used to load contents of core_idle_state
+ */
+
+core_idle_lock_held:
+	HMT_LOW
+3:	lwz	r15,0(r14)
+	andi.   r15,r15,PNV_CORE_IDLE_LOCK_BIT
+	bne	3b
+	HMT_MEDIUM
+	lwarx	r15,0,r14
+	blr
+
+/*
  * Pass requested state in r3:
  *	r3 - PNV_THREAD_NAP/SLEEP/WINKLE
  *
@@ -150,6 +166,10 @@
 	ld	r14,PACA_CORE_IDLE_STATE_PTR(r13)
 lwarx_loop1:
 	lwarx	r15,0,r14
+
+	andi.   r9,r15,PNV_CORE_IDLE_LOCK_BIT
+	bnel	core_idle_lock_held
+
 	andc	r15,r15,r7			/* Clear thread bit */
 
 	andi.	r15,r15,PNV_CORE_IDLE_THREAD_BITS
@@ -294,7 +314,7 @@
 	 * workaround undo code or resyncing timebase or restoring context
 	 * In either case loop until the lock bit is cleared.
 	 */
-	bne	core_idle_lock_held
+	bnel	core_idle_lock_held
 
 	cmpwi	cr2,r15,0
 	lbz	r4,PACA_SUBCORE_SIBLING_MASK(r13)
@@ -319,15 +339,6 @@
 	isync
 	b	common_exit
 
-core_idle_lock_held:
-	HMT_LOW
-core_idle_lock_loop:
-	lwz	r15,0(14)
-	andi.   r9,r15,PNV_CORE_IDLE_LOCK_BIT
-	bne	core_idle_lock_loop
-	HMT_MEDIUM
-	b	lwarx_loop2
-
 first_thread_in_subcore:
 	/* First thread in subcore to wakeup */
 	ori	r15,r15,PNV_CORE_IDLE_LOCK_BIT
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6530f1b..37de90f 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -297,6 +297,8 @@
 
 	__this_cpu_inc(irq_stat.mce_exceptions);
 
+	add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
+
 	if (cur_cpu_spec && cur_cpu_spec->machine_check_early)
 		handled = cur_cpu_spec->machine_check_early(regs);
 	return handled;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 6d53597..a67c6d7 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -529,6 +529,10 @@
 		printk(KERN_ALERT "Unable to handle kernel paging request for "
 			"instruction fetch\n");
 		break;
+	case 0x600:
+		printk(KERN_ALERT "Unable to handle kernel paging request for "
+			"unaligned access at address 0x%08lx\n", regs->dar);
+		break;
 	default:
 		printk(KERN_ALERT "Unable to handle kernel paging request for "
 			"unknown fault\n");
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index ec2eb20..df95629 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -320,6 +320,8 @@
 	if (!attr)
 		return NULL;
 
+	sysfs_attr_init(&attr->attr.attr);
+
 	attr->var = str;
 	attr->attr.attr.name = name;
 	attr->attr.attr.mode = 0444;
diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c
index 4949ef0..37f959b 100644
--- a/arch/powerpc/platforms/powernv/opal-elog.c
+++ b/arch/powerpc/platforms/powernv/opal-elog.c
@@ -237,7 +237,7 @@
 	return elog;
 }
 
-static void elog_work_fn(struct work_struct *work)
+static irqreturn_t elog_event(int irq, void *data)
 {
 	__be64 size;
 	__be64 id;
@@ -251,7 +251,7 @@
 	rc = opal_get_elog_size(&id, &size, &type);
 	if (rc != OPAL_SUCCESS) {
 		pr_err("ELOG: OPAL log info read failed\n");
-		return;
+		return IRQ_HANDLED;
 	}
 
 	elog_size = be64_to_cpu(size);
@@ -270,16 +270,10 @@
 	 * entries.
 	 */
 	if (kset_find_obj(elog_kset, name))
-		return;
+		return IRQ_HANDLED;
 
 	create_elog_obj(log_id, elog_size, elog_type);
-}
 
-static DECLARE_WORK(elog_work, elog_work_fn);
-
-static irqreturn_t elog_event(int irq, void *data)
-{
-	schedule_work(&elog_work);
 	return IRQ_HANDLED;
 }
 
@@ -304,8 +298,8 @@
 		return irq;
 	}
 
-	rc = request_irq(irq, elog_event,
-			IRQ_TYPE_LEVEL_HIGH, "opal-elog", NULL);
+	rc = request_threaded_irq(irq, NULL, elog_event,
+			IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "opal-elog", NULL);
 	if (rc) {
 		pr_err("%s: Can't request OPAL event irq (%d)\n",
 		       __func__, rc);
diff --git a/arch/powerpc/platforms/powernv/opal-prd.c b/arch/powerpc/platforms/powernv/opal-prd.c
index 46cb3fe..4ece8e4 100644
--- a/arch/powerpc/platforms/powernv/opal-prd.c
+++ b/arch/powerpc/platforms/powernv/opal-prd.c
@@ -112,6 +112,7 @@
 static int opal_prd_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	size_t addr, size;
+	pgprot_t page_prot;
 	int rc;
 
 	pr_devel("opal_prd_mmap(0x%016lx, 0x%016lx, 0x%lx, 0x%lx)\n",
@@ -125,13 +126,11 @@
 	if (!opal_prd_range_is_valid(addr, size))
 		return -EINVAL;
 
-	vma->vm_page_prot = __pgprot(pgprot_val(phys_mem_access_prot(file,
-						vma->vm_pgoff,
-						 size, vma->vm_page_prot))
-					| _PAGE_SPECIAL);
+	page_prot = phys_mem_access_prot(file, vma->vm_pgoff,
+					 size, vma->vm_page_prot);
 
 	rc = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, size,
-			vma->vm_page_prot);
+				page_prot);
 
 	return rc;
 }
diff --git a/arch/powerpc/sysdev/ppc4xx_hsta_msi.c b/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
index 2bc3367..87f9623 100644
--- a/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
+++ b/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
@@ -18,6 +18,7 @@
 #include <linux/pci.h>
 #include <linux/semaphore.h>
 #include <asm/msi_bitmap.h>
+#include <asm/ppc-pci.h>
 
 struct ppc4xx_hsta_msi {
 	struct device *dev;
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 8d7e1c8..4dd8826 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1055,7 +1055,7 @@
 
 	processor = (struct acpi_madt_generic_interrupt *)header;
 
-	if (BAD_MADT_ENTRY(processor, end))
+	if (BAD_MADT_GICC_ENTRY(processor, end))
 		return -EINVAL;
 
 	/*
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index 0c77240..729e085 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -23,6 +23,7 @@
 
 	afu = cxl_pci_to_afu(dev);
 
+	get_device(&afu->dev);
 	ctx = cxl_context_alloc();
 	if (IS_ERR(ctx))
 		return ctx;
@@ -31,6 +32,7 @@
 	rc = cxl_context_init(ctx, afu, false, NULL);
 	if (rc) {
 		kfree(ctx);
+		put_device(&afu->dev);
 		return ERR_PTR(-ENOMEM);
 	}
 	cxl_assign_psn_space(ctx);
@@ -60,6 +62,8 @@
 	if (ctx->status != CLOSED)
 		return -EBUSY;
 
+	put_device(&ctx->afu->dev);
+
 	cxl_context_free(ctx);
 
 	return 0;
@@ -159,7 +163,6 @@
 	}
 
 	ctx->status = STARTED;
-	get_device(&ctx->afu->dev);
 out:
 	mutex_unlock(&ctx->status_mutex);
 	return rc;
@@ -175,12 +178,7 @@
 /* Stop a context.  Returns 0 on success, otherwise -Errno */
 int cxl_stop_context(struct cxl_context *ctx)
 {
-	int rc;
-
-	rc = __detach_context(ctx);
-	if (!rc)
-		put_device(&ctx->afu->dev);
-	return rc;
+	return __detach_context(ctx);
 }
 EXPORT_SYMBOL_GPL(cxl_stop_context);
 
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c
index 2a4c80a..1287148 100644
--- a/drivers/misc/cxl/context.c
+++ b/drivers/misc/cxl/context.c
@@ -113,11 +113,11 @@
 
 	if (ctx->afu->current_mode == CXL_MODE_DEDICATED) {
 		area = ctx->afu->psn_phys;
-		if (offset > ctx->afu->adapter->ps_size)
+		if (offset >= ctx->afu->adapter->ps_size)
 			return VM_FAULT_SIGBUS;
 	} else {
 		area = ctx->psn_phys;
-		if (offset > ctx->psn_size)
+		if (offset >= ctx->psn_size)
 			return VM_FAULT_SIGBUS;
 	}
 
@@ -145,8 +145,16 @@
  */
 int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma)
 {
+	u64 start = vma->vm_pgoff << PAGE_SHIFT;
 	u64 len = vma->vm_end - vma->vm_start;
-	len = min(len, ctx->psn_size);
+
+	if (ctx->afu->current_mode == CXL_MODE_DEDICATED) {
+		if (start + len > ctx->afu->adapter->ps_size)
+			return -EINVAL;
+	} else {
+		if (start + len > ctx->psn_size)
+			return -EINVAL;
+	}
 
 	if (ctx->afu->current_mode != CXL_MODE_DEDICATED) {
 		/* make sure there is a valid per process space for this AFU */
diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c
index 833348e..4a164ab 100644
--- a/drivers/misc/cxl/main.c
+++ b/drivers/misc/cxl/main.c
@@ -73,7 +73,7 @@
 		spin_lock(&adapter->afu_list_lock);
 		for (slice = 0; slice < adapter->slices; slice++) {
 			afu = adapter->afu[slice];
-			if (!afu->enabled)
+			if (!afu || !afu->enabled)
 				continue;
 			rcu_read_lock();
 			idr_for_each_entry(&afu->contexts_idr, ctx, id)
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index c68ef58..32ad097 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -539,7 +539,7 @@
 
 static void cxl_unmap_slice_regs(struct cxl_afu *afu)
 {
-	if (afu->p1n_mmio)
+	if (afu->p2n_mmio)
 		iounmap(afu->p2n_mmio);
 	if (afu->p1n_mmio)
 		iounmap(afu->p1n_mmio);
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index b1d1983a..2eba002 100644
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -112,9 +112,10 @@
 	unsigned long addr;
 
 	phb = pci_bus_to_host(bus);
-	afu = (struct cxl_afu *)phb->private_data;
 	if (phb == NULL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
+	afu = (struct cxl_afu *)phb->private_data;
+
 	if (cxl_pcie_cfg_record(bus->number, devfn) > afu->crs_num)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	if (offset >= (unsigned long)phb->cfg_data)