Pull video into test branch

[linux-drm-fsl-dcu.git] / arch / arm / mm / copypage-v6.c

diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index 269ce6913ee95958948b6ce142c8a1773206434f..3adb79257f43527339b9c891974d3f2a58e84ece 100644 (file)
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -17,6 +17,8 @@
 #include <asm/tlbflush.h>
 #include <asm/cacheflush.h>
 
+#include "mm.h"
+
 #if SHMLBA > 16384
 #error FIX ME
 #endif
@@ -24,8 +26,6 @@
 #define from_address   (0xffff8000)
 #define to_address     (0xffffc000)
 
-#define TOP_PTE(x)     pte_offset_kernel(top_pmd, x)
-
 static DEFINE_SPINLOCK(v6_lock);
 
 /*
@@ -53,6 +53,10 @@ static void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned lo
 {
        unsigned int offset = CACHE_COLOUR(vaddr);
        unsigned long from, to;
+       struct page *page = virt_to_page(kfrom);
+
+       if (test_and_clear_bit(PG_dcache_dirty, &page->flags))
+               __flush_dcache_page(page_mapping(page), page);
 
        /*
         * Discard data in the kernel mapping for the new page.
@@ -70,8 +74,8 @@ static void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned lo
         */
        spin_lock(&v6_lock);
 
-       set_pte(TOP_PTE(from_address) + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, PAGE_KERNEL));
-       set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, PAGE_KERNEL));
+       set_pte_ext(TOP_PTE(from_address) + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, PAGE_KERNEL), 0);
+       set_pte_ext(TOP_PTE(to_address) + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, PAGE_KERNEL), 0);
 
        from = from_address + (offset << PAGE_SHIFT);
        to   = to_address + (offset << PAGE_SHIFT);
@@ -110,7 +114,7 @@ static void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
         */
        spin_lock(&v6_lock);
 
-       set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, PAGE_KERNEL));
+       set_pte_ext(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, PAGE_KERNEL), 0);
        flush_tlb_kernel_page(to);
        clear_page((void *)to);