From: Christoph Hellwig <hch@lst.de>
To: Palmer Dabbelt <palmer@sifive.com>,
Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org
Subject: [PATCH 4/8] riscv: remove the active_mm check in sys_riscv_flush_icache
Date: Thu, 22 Aug 2019 15:56:08 +0900 [thread overview]
Message-ID: <20190822065612.28634-5-hch@lst.de> (raw)
In-Reply-To: <20190822065612.28634-1-hch@lst.de>
current->active_mm is always the same as current->mm for user processes
(see Documentation/vm/active_mm.rst for details), and given that we are
directly in a syscall handler this is obviously the case here.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/riscv/mm/cacheflush.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c
index 4f78d6552476..eed715de4795 100644
--- a/arch/riscv/mm/cacheflush.c
+++ b/arch/riscv/mm/cacheflush.c
@@ -38,7 +38,7 @@ static void flush_icache_mm(bool local)
*/
cpumask_andnot(&others, mm_cpumask(current->mm), cpumask_of(cpu));
local |= cpumask_empty(&others);
- if (current->mm != current->active_mm || !local) {
+ if (!local) {
riscv_cpuid_to_hartid_mask(&others, &hmask);
sbi_remote_fence_i(hmask.bits);
} else {
--
2.20.1
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next prev parent reply other threads:[~2019-08-22 6:56 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-22 6:56 sys_riscv_flush_icache Christoph Hellwig
2019-08-22 6:56 ` [PATCH 1/8] riscv: fix the flags argument type for riscv_riscv_flush_icache Christoph Hellwig
2019-08-22 6:56 ` [PATCH 2/8] riscv: remove SYS_RISCV_FLUSH_ICACHE_LOCAL #define Christoph Hellwig
2019-08-22 6:56 ` [PATCH 3/8] riscv: move sys_riscv_flush_icache to cacheflush.c Christoph Hellwig
2019-08-22 6:56 ` Christoph Hellwig [this message]
2019-08-22 6:56 ` [PATCH 5/8] riscv: actually clear icache_stale_mask for all harts in mm_cpumask Christoph Hellwig
2019-08-22 18:29 ` Atish Patra
2019-08-26 11:41 ` hch
2019-08-22 6:56 ` [PATCH 6/8] riscv: use get_cpu and put_cpu in sys_riscv_flush_icache Christoph Hellwig
2019-08-22 17:49 ` Atish Patra
2019-08-26 11:38 ` hch
2019-08-27 18:42 ` Atish Patra
2019-08-22 6:56 ` [PATCH 7/8] riscv: improve the local flushing logic " Christoph Hellwig
2019-08-22 17:34 ` Atish Patra
2019-08-26 11:36 ` hch
2019-08-22 6:56 ` [PATCH 8/8] riscv: ignore the SYS_RISCV_FLUSH_ICACHE_LOCAL flag Christoph Hellwig
2019-08-28 1:10 ` Palmer Dabbelt
2019-08-28 6:09 ` Christoph Hellwig
2019-09-03 18:46 ` Palmer Dabbelt
2019-09-06 17:07 ` Christoph Hellwig
2019-09-13 19:44 ` Palmer Dabbelt
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