diff options
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 58b5a906ff78..83c27b6e6dca 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -23,6 +23,7 @@ #include <asm/assembler.h> #include <asm/cpufeature.h> #include <asm/alternative.h> +#include <asm/asm-uaccess.h> /* * flush_icache_range(start,end) @@ -48,6 +49,7 @@ ENTRY(flush_icache_range) * - end - virtual end address of region */ ENTRY(__flush_cache_user_range) + uaccess_ttbr0_enable x2, x3 dcache_line_size x2, x3 sub x3, x2, #1 bic x4, x0, x3 @@ -69,10 +71,12 @@ USER(9f, ic ivau, x4 ) // invalidate I line PoU dsb ish isb mov x0, #0 +1: + uaccess_ttbr0_disable x1 ret 9: mov x0, #-EFAULT - ret + b 1b ENDPROC(flush_icache_range) ENDPROC(__flush_cache_user_range) |