[ 3.5.y.z extended stable ] Patch "ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Thu Jun 27 12:53:25 UTC 2013
This is a note to let you know that I have just added a patch titled
ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU
to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From d8b09f9a22655b1fe04103d722ec1fdbbbcea75d Mon Sep 17 00:00:00 2001
From: Simon Baatz <gmbnomis at gmail.com>
Date: Sat, 22 Jun 2013 22:01:25 +0100
Subject: [PATCH] ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU
commit 63384fd0b1509acf522a8a8fcede09087eedb7df upstream.
Commit 1bc3974 (ARM: 7755/1: handle user space mapped pages in
flush_kernel_dcache_page) moved the implementation of
flush_kernel_dcache_page() into mm/flush.c but did not implement it
on noMMU ARM.
Signed-off-by: Simon Baatz <gmbnomis at gmail.com>
Acked-by: Kevin Hilman <khilman at linaro.org>
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
arch/arm/mm/nommu.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index d51225f..eb5293a 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -57,6 +57,12 @@ void flush_dcache_page(struct page *page)
}
EXPORT_SYMBOL(flush_dcache_page);
+void flush_kernel_dcache_page(struct page *page)
+{
+ __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE);
+}
+EXPORT_SYMBOL(flush_kernel_dcache_page);
+
void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long uaddr, void *dst, const void *src,
unsigned long len)
--
1.8.1.2
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