This is a note to let you know that I've just added the patch titled
xtensa: fix kmap_prot definition
to the 3.18-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:
xtensa-fix-kmap_prot-definition.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ff009ab6d4d4581b62fa055ab6233133aca25ab8 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@xxxxxxxxx>
Date: Tue, 9 Dec 2014 03:04:24 +0300
Subject: xtensa: fix kmap_prot definition
From: Max Filippov <jcmvbkbc@xxxxxxxxx>
commit ff009ab6d4d4581b62fa055ab6233133aca25ab8 upstream.
Replace PAGE_KERNEL with PAGE_KERNEL_EXEC to allow copy_to_user_page
invalidate icache for pages mapped with kmap.
Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/xtensa/include/asm/highmem.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/xtensa/include/asm/highmem.h
+++ b/arch/xtensa/include/asm/highmem.h
@@ -25,7 +25,7 @@
#define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT)
#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
-#define kmap_prot PAGE_KERNEL
+#define kmap_prot PAGE_KERNEL_EXEC
#if DCACHE_WAY_SIZE > PAGE_SIZE
#define get_pkmap_color get_pkmap_color
Patches currently in stable-queue which might be from jcmvbkbc@xxxxxxxxx are
queue-3.18/xtensa-fix-kmap_prot-definition.patch
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