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Later, we wait for completion of all scatter-gather entries together. Cc: Leon Romanovsky Cc: Catalin Marinas Cc: Will Deacon Cc: Marek Szyprowski Cc: Robin Murphy Cc: Ada Couprie Diaz Cc: Ard Biesheuvel Cc: Marc Zyngier Cc: Anshuman Khandual Cc: Ryan Roberts Cc: Suren Baghdasaryan Cc: Tangquan Zheng Tested-by: Xueyuan Chen Signed-off-by: Barry Song --- arch/arm64/include/asm/cacheflush.h | 1 + arch/arm64/mm/cache.S | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h index 28ab96e808ef..9b6d0a62cf3d 100644 --- a/arch/arm64/include/asm/cacheflush.h +++ b/arch/arm64/include/asm/cacheflush.h @@ -74,6 +74,7 @@ extern void icache_inval_pou(unsigned long start, unsigned long end); extern void dcache_clean_inval_poc(unsigned long start, unsigned long end); extern void dcache_inval_poc(unsigned long start, unsigned long end); extern void dcache_clean_poc(unsigned long start, unsigned long end); +extern void dcache_clean_poc_nosync(unsigned long start, unsigned long end); extern void dcache_clean_pop(unsigned long start, unsigned long end); extern void dcache_clean_pou(unsigned long start, unsigned long end); extern long caches_clean_inval_user_pou(unsigned long start, unsigned long end); diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S index 503567c864fd..4a7c7e03785d 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -178,6 +178,21 @@ SYM_FUNC_START(__pi_dcache_clean_poc) SYM_FUNC_END(__pi_dcache_clean_poc) SYM_FUNC_ALIAS(dcache_clean_poc, __pi_dcache_clean_poc) +/* + * dcache_clean_poc_nosync(start, end) + * + * Issue the instructions of D-cache lines for the interval [start, end). + * not necessarily cleaned to the PoC till an explicit dsb sy afterward. + * + * - start - virtual start address of region + * - end - virtual end address of region + */ +SYM_FUNC_START(__pi_dcache_clean_poc_nosync) + dcache_by_line_op_nosync cvac, x0, x1, x2, x3 + ret +SYM_FUNC_END(__pi_dcache_clean_poc_nosync) +SYM_FUNC_ALIAS(dcache_clean_poc_nosync, __pi_dcache_clean_poc_nosync) + /* * dcache_clean_pop(start, end) * -- 2.39.3 (Apple Git-146)