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authorJungseung Lee <js07.lee@gmail.com>2014-11-29 02:51:49 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-12-03 16:00:04 +0000
commit802318743a449f74d3fc952ad7cdcbd3a44dcdc2 (patch)
treebdb843d4a5e0db7c24bb89e446d2553ac49987c9 /arch/arm/mm
parent1d4d37159d013a4c54d785407dd8902f901d7bc5 (diff)
ARM: 8236/1: mm: fix discard_old_kernel_data
L1_CACHE_BYTES could be larger value than real L1 cache line size. In that case, discard_old_kernel_data() would omit to invalidate last bytes as much as L1_CACHE_BYTES - real cache line size. So fix end address to "to + PAGE_SIZE -1". The bottom bits of the address is LINELEN. that is ignored by mcrr. Signed-off-by: Jungseung Lee <js07.lee@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/copypage-v6.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index b9bcc9d79176..70423345da26 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -62,7 +62,7 @@ static void discard_old_kernel_data(void *kto)
__asm__("mcrr p15, 0, %1, %0, c6 @ 0xec401f06"
:
: "r" (kto),
- "r" ((unsigned long)kto + PAGE_SIZE - L1_CACHE_BYTES)
+ "r" ((unsigned long)kto + PAGE_SIZE - 1)
: "cc");
}