Merge tag 'kvm-s390-next-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390: features and fixes for 4.9

- lazy enablement of runtime instrumentation
- up to 255 CPUs for nested guests
- rework of machine check deliver
- cleanups/fixes

3 files changed, 23 insertions, 5 deletions

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index bc5f50799d75..9f157e7c51e7 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -295,6 +295,7 @@ __und_svc_fault:
 	bl	__und_fault
 
 __und_svc_finish:
+	get_thread_info tsk
 	ldr	r5, [sp, #S_PSR]		@ Get SVC cpsr
 	svc_exit r5				@ return from exception
  UNWIND(.fnend		)
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index fd8720532471..0df062d8b2c9 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -271,6 +271,12 @@ static int __init imx_gpc_init(struct device_node *node,
 	for (i = 0; i < IMR_NUM; i++)
 		writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
 
+	/*
+	 * Clear the OF_POPULATED flag set in of_irq_init so that
+	 * later the GPC power domain driver will not be skipped.
+	 */
+	of_node_clear_flag(node, OF_POPULATED);
+
 	return 0;
 }
 IRQCHIP_DECLARE(imx_gpc, "fsl,imx6q-gpc", imx_gpc_init);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 62f4d01941f7..6344913f0804 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -728,7 +728,8 @@ static void *__init late_alloc(unsigned long sz)
 {
 	void *ptr = (void *)__get_free_pages(PGALLOC_GFP, get_order(sz));
 
-	BUG_ON(!ptr);
+	if (!ptr || !pgtable_page_ctor(virt_to_page(ptr)))
+		BUG();
 	return ptr;
 }
 
@@ -1155,10 +1156,19 @@ void __init sanity_check_meminfo(void)
 {
 	phys_addr_t memblock_limit = 0;
 	int highmem = 0;
-	phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
+	u64 vmalloc_limit;
 	struct memblock_region *reg;
 	bool should_use_highmem = false;
 
+	/*
+	 * Let's use our own (unoptimized) equivalent of __pa() that is
+	 * not affected by wrap-arounds when sizeof(phys_addr_t) == 4.
+	 * The result is used as the upper bound on physical memory address
+	 * and may itself be outside the valid range for which phys_addr_t
+	 * and therefore __pa() is defined.
+	 */
+	vmalloc_limit = (u64)(uintptr_t)vmalloc_min - PAGE_OFFSET + PHYS_OFFSET;
+
 	for_each_memblock(memory, reg) {
 		phys_addr_t block_start = reg->base;
 		phys_addr_t block_end = reg->base + reg->size;
@@ -1183,10 +1193,11 @@ void __init sanity_check_meminfo(void)
 			if (reg->size > size_limit) {
 				phys_addr_t overlap_size = reg->size - size_limit;
 
-				pr_notice("Truncating RAM at %pa-%pa to -%pa",
-					  &block_start, &block_end, &vmalloc_limit);
-				memblock_remove(vmalloc_limit, overlap_size);
+				pr_notice("Truncating RAM at %pa-%pa",
+					  &block_start, &block_end);
 				block_end = vmalloc_limit;
+				pr_cont(" to -%pa", &block_end);
+				memblock_remove(vmalloc_limit, overlap_size);
 				should_use_highmem = true;
 			}
 		}