Patchwork [3.8.y.z,extended,stable] Patch "ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU" has been added to staging queue

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Submitter Kamal Mostafa
Date June 26, 2013, 11:43 p.m.
Message ID <1372290223-14857-1-git-send-email-kamal@canonical.com>
Download mbox | patch
Permalink /patch/254920/
State New
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Comments

Kamal Mostafa - June 26, 2013, 11:43 p.m.
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-3.8.y-queue branch of the 3.8.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-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.4.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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From 9785c65253a2467c479f5c5565462904a4e0d03c Mon Sep 17 00:00:00 2001
From: Simon Baatz <gmbnomis@gmail.com>
Date: Sat, 22 Jun 2013 22:01:25 +0100
Subject: 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@gmail.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 arch/arm/mm/nommu.c | 6 ++++++
 1 file changed, 6 insertions(+)

--
1.8.1.2

Patch

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)