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Message-Id: <20150114072100.269985366@linuxfoundation.org>
Date: Tue, 13 Jan 2015 23:22:48 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH 3.18 097/150] xtensa: fix kmap_prot definition
3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Max Filippov <jcmvbkbc@...il.com>
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@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
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
--
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