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| author | John David Anglin <dave.anglin@bell.net> | 2017-07-25 23:23:35 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2017-07-25 23:36:54 +0200 |
| commit | 56008c04ebc099940021b714da2d7779117cf6a7 (patch) | |
| tree | 481921fdcfd0f2b964532baf1f7bd540809e3477 /arch | |
| parent | parisc: Prevent TLB speculation on flushed pages on CPUs that only support eq... (diff) | |
| download | linux-56008c04ebc099940021b714da2d7779117cf6a7.tar.xz linux-56008c04ebc099940021b714da2d7779117cf6a7.zip | |
parisc: Extend disabled preemption in copy_user_page
It's always bothered me that we only disable preemption in
copy_user_page around the call to flush_dcache_page_asm.
This patch extends this to after the copy.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/kernel/cache.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 3a64ebb39ac7..85a92db70afc 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -453,8 +453,8 @@ void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, before it can be accessed through the kernel mapping. */ preempt_disable(); flush_dcache_page_asm(__pa(vfrom), vaddr); - preempt_enable(); copy_page_asm(vto, vfrom); + preempt_enable(); } EXPORT_SYMBOL(copy_user_page); |