linux-kernel - [tip:x86/mm] x86: Ioremap: fix wrong physical address handling in PAT code

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Date:	Thu, 29 Jul 2010 13:27:45 GMT
From:	tip-bot for Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	isimatu.yasuaki@...fujitsu.com, kaneshige.kenji@...fujitsu.com,
	tglx@...utronix.de
Subject: [tip:x86/mm] x86: Ioremap: fix wrong physical address handling in PAT code

Commit-ID:  3709c857350976408953831f0cf89d19951394a1
Gitweb:     http://git.kernel.org/tip/3709c857350976408953831f0cf89d19951394a1
Author:     Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
AuthorDate: Thu, 22 Jul 2010 14:57:35 +0900
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 29 Jul 2010 15:26:11 +0200

x86: Ioremap: fix wrong physical address handling in PAT code

The following two commits fixed a problem that x86 ioremap() doesn't handle
physical address higher than 32-bit properly in X86_32 PAE mode.

 ffa71f33a820d1ab3f2fc5723819ac60fb76080b (x86, ioremap: Fix incorrect
 physical address handling in PAE mode)

 35be1b716a475717611b2dc04185e9d80b9cb693 (x86, ioremap: Fix normal
 ram range check)

But these fixes are not enough, since pat_pagerange_is_ram() in PAT code
also has a same problem. This patch fixes it.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
LKML-Reference: <4C47DDCF.80300@...fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/mm/pat.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index acc15b2..03b48c8 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -158,7 +158,7 @@ static unsigned long pat_x_mtrr_type(u64 start, u64 end, unsigned long req_type)
 	return req_type;
 }
 
-static int pat_pagerange_is_ram(unsigned long start, unsigned long end)
+static int pat_pagerange_is_ram(resource_size_t start, resource_size_t end)
 {
 	int ram_page = 0, not_rampage = 0;
 	unsigned long page_nr;
--
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