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Commit 3709c857 authored by Yasuaki Ishimatsu's avatar Yasuaki Ishimatsu Committed by Thomas Gleixner
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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: default avatarYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
LKML-Reference: <4C47DDCF.80300@jp.fujitsu.com>
Signed-off-by: default avatarThomas 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;