Merge branch 'omap2-upstream' into devel

6 files changed, 14 insertions, 13 deletions

diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index c394ca0720b8..8e25e06ff730 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -324,7 +324,6 @@ unsigned long __init setup_memory(void)
          * this space and use it to adjust the boundary between ZONE_NORMAL
          * and ZONE_HIGHMEM.
          */
-        find_max_pfn();
         get_memcfg_numa();
 
         kva_pages = calculate_numa_remap_pages();
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index fdc667422df9..ec08d8389850 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -91,12 +91,10 @@ static int is_prefetch(struct pt_regs *regs, unsigned long addr,
         int prefetch = 0;
         unsigned char *max_instr;
 
-#ifdef CONFIG_X86_32
-        if (!(__supported_pte_mask & _PAGE_NX))
-                return 0;
-#endif
-
-        /* If it was a exec fault on NX page, ignore */
+        /*
+         * If it was a exec (instruction fetch) fault on NX page, then
+         * do not ignore the fault:
+         */
         if (error_code & PF_INSTR)
                 return 0;
 
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index 3d936f232704..9cf33d3ee5bc 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -73,15 +73,15 @@ void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
 {
         enum fixed_addresses idx;
         unsigned long vaddr;
-        /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
-
-        debug_kmap_atomic_prot(type);
 
+        /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
         pagefault_disable();
 
         if (!PageHighMem(page))
                 return page_address(page);
 
+        debug_kmap_atomic_prot(type);
+
         idx = type + KM_TYPE_NR*smp_processor_id();
         vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
         BUG_ON(!pte_none(*(kmap_pte-idx)));
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 4fbafb4bc2f0..0b3d567e686d 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -178,7 +178,7 @@ follow_huge_addr(struct mm_struct *mm, unsigned long address, int write)
 
         page = &pte_page(*pte)[vpfn % (HPAGE_SIZE/PAGE_SIZE)];
 
-        WARN_ON(!PageCompound(page));
+        WARN_ON(!PageHead(page));
 
         return page;
 }
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 4afaba0ed722..794895c6dcc9 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -137,7 +137,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
         switch (mode) {
         case IOR_MODE_UNCACHED:
         default:
-                prot = PAGE_KERNEL_NOCACHE;
+                /*
+                 * FIXME: we will use UC MINUS for now, as video fb drivers
+                 * depend on it. Upcoming ioremap_wc() will fix this behavior.
+                 */
+                prot = PAGE_KERNEL_UC_MINUS;
                 break;
         case IOR_MODE_CACHED:
                 prot = PAGE_KERNEL;
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 14e48b5a94ba..7b79f6be4e7d 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -771,7 +771,7 @@ static inline int change_page_attr_clear(unsigned long addr, int numpages,
 int set_memory_uc(unsigned long addr, int numpages)
 {
         return change_page_attr_set(addr, numpages,
-                                    __pgprot(_PAGE_PCD | _PAGE_PWT));
+                                    __pgprot(_PAGE_PCD));
 }
 EXPORT_SYMBOL(set_memory_uc);