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riscv: Use flush_icache_mm for flush_icache_user_range

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The only call path is:

__access_remote_vm -> copy_to_user_page -> flush_icache_user_range

Seems it's ok to use flush_icache_mm instead of flush_icache_all and
it could reduce flush_icache_all called on other harts.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
[Palmer: git-am wouldn't apply the patch, I did so manually]
Fixes: 08f051eda3 ("RISC-V: Flush I$ when making a dirty page executable")
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Guo Ren 2020-01-30 17:04:19 +00:00 committed by Palmer Dabbelt
parent 98d54f81e3
commit ab70a73aa4
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1 changed files with 1 additions and 1 deletions
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arch/riscv/include/asm/cacheflush.h
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@ -85,7 +85,7 @@ static inline void flush_dcache_page(struct page *page)
* so instead we just flush the whole thing.
*/
#define flush_icache_range(start, end) flush_icache_all()
#define flush_icache_user_range(vma, pg, addr, len) flush_icache_all()
#define flush_icache_user_range(vma, pg, addr, len) flush_icache_mm(vma->vm_mm, 0)
#ifndef CONFIG_SMP