This is a note to let you know that I've just added the patch titled
arm64: add DSB after icache flush in __flush_icache_all()
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-add-dsb-after-icache-flush-in-__flush_icache_all.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4 Mon Sep 17 00:00:00 2001
From: Vinayak Kale <vkale@xxxxxxx>
Date: Wed, 5 Feb 2014 09:34:36 +0000
Subject: arm64: add DSB after icache flush in __flush_icache_all()
From: Vinayak Kale <vkale@xxxxxxx>
commit 5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4 upstream.
Add DSB after icache flush to complete the cache maintenance operation.
The function __flush_icache_all() is used only for user space mappings
and an ISB is not required because of an exception return before executing
user instructions. An exception return would behave like an ISB.
Signed-off-by: Vinayak Kale <vkale@xxxxxxx>
Acked-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/cacheflush.h | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -116,6 +116,7 @@ extern void flush_dcache_page(struct pag
static inline void __flush_icache_all(void)
{
asm("ic ialluis");
+ dsb();
}
#define flush_dcache_mmap_lock(mapping) \
Patches currently in stable-queue which might be from vkale@xxxxxxx are
queue-3.12/arm64-add-dsb-after-icache-flush-in-__flush_icache_all.patch
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