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Diffstat (limited to 'arch/mips/include/asm/cacheflush.h')
-rw-r--r--arch/mips/include/asm/cacheflush.h38
1 files changed, 23 insertions, 15 deletions
diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h
index e08381a37f8b..723229f4cf27 100644
--- a/arch/mips/include/asm/cacheflush.h
+++ b/arch/mips/include/asm/cacheflush.h
@@ -29,6 +29,20 @@
* - flush_icache_all() flush the entire instruction cache
* - flush_data_cache_page() flushes a page from the data cache
*/
+
+ /*
+ * This flag is used to indicate that the page pointed to by a pte
+ * is dirty and requires cleaning before returning it to the user.
+ */
+#define PG_dcache_dirty PG_arch_1
+
+#define Page_dcache_dirty(page) \
+ test_bit(PG_dcache_dirty, &(page)->flags)
+#define SetPageDcacheDirty(page) \
+ set_bit(PG_dcache_dirty, &(page)->flags)
+#define ClearPageDcacheDirty(page) \
+ clear_bit(PG_dcache_dirty, &(page)->flags)
+
extern void (*flush_cache_all)(void);
extern void (*__flush_cache_all)(void);
extern void (*flush_cache_mm)(struct mm_struct *mm);
@@ -37,13 +51,15 @@ extern void (*flush_cache_range)(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
extern void __flush_dcache_page(struct page *page);
+extern void __flush_icache_page(struct vm_area_struct *vma, struct page *page);
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
static inline void flush_dcache_page(struct page *page)
{
- if (cpu_has_dc_aliases || !cpu_has_ic_fills_f_dc)
+ if (cpu_has_dc_aliases)
__flush_dcache_page(page);
-
+ else if (!cpu_has_ic_fills_f_dc)
+ SetPageDcacheDirty(page);
}
#define flush_dcache_mmap_lock(mapping) do { } while (0)
@@ -61,6 +77,11 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
static inline void flush_icache_page(struct vm_area_struct *vma,
struct page *page)
{
+ if (!cpu_has_ic_fills_f_dc && (vma->vm_flags & VM_EXEC) &&
+ Page_dcache_dirty(page)) {
+ __flush_icache_page(vma, page);
+ ClearPageDcacheDirty(page);
+ }
}
extern void (*flush_icache_range)(unsigned long start, unsigned long end);
@@ -95,19 +116,6 @@ extern void (*flush_icache_all)(void);
extern void (*local_flush_data_cache_page)(void * addr);
extern void (*flush_data_cache_page)(unsigned long addr);
-/*
- * This flag is used to indicate that the page pointed to by a pte
- * is dirty and requires cleaning before returning it to the user.
- */
-#define PG_dcache_dirty PG_arch_1
-
-#define Page_dcache_dirty(page) \
- test_bit(PG_dcache_dirty, &(page)->flags)
-#define SetPageDcacheDirty(page) \
- set_bit(PG_dcache_dirty, &(page)->flags)
-#define ClearPageDcacheDirty(page) \
- clear_bit(PG_dcache_dirty, &(page)->flags)
-
/* Run kernel code uncached, useful for cache probing functions. */
unsigned long run_uncached(void *func);