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| author | Ingo Molnar <mingo@elte.hu> | 2009-10-15 08:07:26 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-15 08:07:30 +0200 |
| commit | a0738a688d1105cbf8d71868a1e020c6cdf42d4c (patch) | |
| tree | 2cad553a9def773ce79b8fc793f89c0634187109 /arch/arm/mm/cache-v6.S | |
| parent | 89ccf465abe6b20d804a63ae20307970c441369d (diff) | |
| parent | a3ccf63ee643ef243cbf8918da8b3f9238f10029 (diff) | |
| download | op-kernel-dev-a0738a688d1105cbf8d71868a1e020c6cdf42d4c.zip op-kernel-dev-a0738a688d1105cbf8d71868a1e020c6cdf42d4c.tar.gz | |
Merge branch 'linus' into x86/urgent
Merge reason: pull in latest, to be able to revert a patch there.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/mm/cache-v6.S')
| -rw-r--r-- | arch/arm/mm/cache-v6.S | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index 8f5c13f..295e25d 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> +#include <asm/unwind.h> #include "proc-macros.S" @@ -121,11 +122,13 @@ ENTRY(v6_coherent_kern_range) * - the Icache does not read data from the write buffer */ ENTRY(v6_coherent_user_range) - + UNWIND(.fnstart ) #ifdef HARVARD_CACHE bic r0, r0, #CACHE_LINE_SIZE - 1 -1: mcr p15, 0, r0, c7, c10, 1 @ clean D line +1: + USER( mcr p15, 0, r0, c7, c10, 1 ) @ clean D line add r0, r0, #CACHE_LINE_SIZE +2: cmp r0, r1 blo 1b #endif @@ -143,6 +146,19 @@ ENTRY(v6_coherent_user_range) mov pc, lr /* + * Fault handling for the cache operation above. If the virtual address in r0 + * isn't mapped, just try the next page. + */ +9001: + mov r0, r0, lsr #12 + mov r0, r0, lsl #12 + add r0, r0, #4096 + b 2b + UNWIND(.fnend ) +ENDPROC(v6_coherent_user_range) +ENDPROC(v6_coherent_kern_range) + +/* * v6_flush_kern_dcache_page(kaddr) * * Ensure that the data held in the page kaddr is written back |
