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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2014-12-01 13:53:08 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-12-01 16:31:12 +0300 |
| commit | a2d25a5391ca219f196f9fee7b535c40d201c6bf (patch) | |
| tree | 4b2e208ebac21cf53793db6ba4ed5a74b04a6d59 /arch/arm64/mm/cache.S | |
| parent | a1ae65b219416a72c15577bd4c8c11174fffbb8b (diff) | |
| download | linux-a2d25a5391ca219f196f9fee7b535c40d201c6bf.tar.xz | |
arm64: compat: align cacheflush syscall with arch/arm
Update handling of cacheflush syscall with changes made in arch/arm
counterpart:
- return error to userspace when flushing syscall fails
- split user cache-flushing into interruptible chunks
- don't bother rounding to nearest vma
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
[will: changed internal return value from -EINTR to 0 to match arch/arm/]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/mm/cache.S')
| -rw-r--r-- | arch/arm64/mm/cache.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S index 8eaf18577d71..2560e1e1562e 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -17,6 +17,7 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/errno.h> #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> @@ -140,9 +141,12 @@ USER(9f, ic ivau, x4 ) // invalidate I line PoU add x4, x4, x2 cmp x4, x1 b.lo 1b -9: // ignore any faulting cache operation dsb ish isb + mov x0, #0 + ret +9: + mov x0, #-EFAULT ret ENDPROC(flush_icache_range) ENDPROC(__flush_cache_user_range) |