Commit 3709c857 authored Jul 22, 2010 by Yasuaki Ishimatsu Committed by Thomas Gleixner Jul 29, 2010

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.

 ffa71f33 (x86, ioremap: Fix incorrect
 physical address handling in PAE mode)

 35be1b71 (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@jp.fujitsu.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
LKML-Reference: <4C47DDCF.80300@jp.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 3f8afb77

arch/x86/mm/pat.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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