diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/cacheflush.h | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index de6c59f814a..85a2514cbff 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -15,6 +15,7 @@ #include <asm/glue.h> #include <asm/shmparam.h> +#include <asm/cachetype.h> #define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT) @@ -296,16 +297,6 @@ static inline void outer_flush_range(unsigned long start, unsigned long end) #endif /* - * flush_cache_vmap() is used when creating mappings (eg, via vmap, - * vmalloc, ioremap etc) in kernel space for pages. Since the - * direct-mappings of these pages may contain cached data, we need - * to do a full cache flush to ensure that writebacks don't corrupt - * data placed into these pages via the new mappings. - */ -#define flush_cache_vmap(start, end) flush_cache_all() -#define flush_cache_vunmap(start, end) flush_cache_all() - -/* * Copy user data from/to a page which is mapped into a different * processes address space. Really, we want to allow our "user * space" model to handle this. @@ -444,4 +435,29 @@ static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt, dmac_inv_range(start, start + size); } +/* + * flush_cache_vmap() is used when creating mappings (eg, via vmap, + * vmalloc, ioremap etc) in kernel space for pages. On non-VIPT + * caches, since the direct-mappings of these pages may contain cached + * data, we need to do a full cache flush to ensure that writebacks + * don't corrupt data placed into these pages via the new mappings. + */ +static inline void flush_cache_vmap(unsigned long start, unsigned long end) +{ + if (!cache_is_vipt_nonaliasing()) + flush_cache_all(); + else + /* + * set_pte_at() called from vmap_pte_range() does not + * have a DSB after cleaning the cache line. + */ + dsb(); +} + +static inline void flush_cache_vunmap(unsigned long start, unsigned long end) +{ + if (!cache_is_vipt_nonaliasing()) + flush_cache_all(); +} + #endif |