From: Russ Anderson <rja@efs.americas.sgi.com>
To: linux-ia64@vger.kernel.org
Subject: [patch] MCA recovery verify pfn_valid
Date: Fri, 16 Sep 2005 21:54:53 +0000 [thread overview]
Message-ID: <200509162154.j8GLsrWN2681135@efs.americas.sgi.com> (raw)
Verify the pfn is valid before calling pfn_to_page().
Signed-off-by: Russ Anderson (rja@sgi.com)
---------------------------------------------------------------------
arch/ia64/kernel/mca_drv.c | 3 +++
1 files changed, 3 insertions(+)
Index: linux-2.6.git#test/arch/ia64/kernel/mca_drv.c
=================================--- linux-2.6.git#test.orig/arch/ia64/kernel/mca_drv.c 2005-09-16 16:28:11.857773257 -0500
+++ linux-2.6.git#test/arch/ia64/kernel/mca_drv.c 2005-09-16 16:29:32.119181669 -0500
@@ -87,6 +87,9 @@ mca_page_isolate(unsigned long paddr)
if ( !ia64_phys_addr_valid(paddr) )
return ISOLATE_NG;
+ if ( !pfn_valid(paddr))
+ return ISOLATE_OK;
+
/* convert physical address to physical page number */
p = pfn_to_page(paddr>>PAGE_SHIFT);
next reply other threads:[~2005-09-16 21:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-16 21:54 Russ Anderson [this message]
2005-09-19 22:19 ` [patch] MCA recovery verify pfn_valid Russ Anderson
2005-09-20 7:34 ` Hidetoshi Seto
2005-09-20 22:07 ` Russ Anderson
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