* [tip:x86/uv] x86, UV: system table in bios accessed after unmap
[not found] <20090330225240.GA22776@sgi.com>
@ 2009-04-03 17:33 ` Russ Anderson
0 siblings, 0 replies; only message in thread
From: Russ Anderson @ 2009-04-03 17:33 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, rja, hpa, mingo, tglx, mingo
Commit-ID: 1a544e659cbfce178395e9a090a47d1907d0cfa8
Gitweb: http://git.kernel.org/tip/1a544e659cbfce178395e9a090a47d1907d0cfa8
Author: Russ Anderson <rja@sgi.com>
AuthorDate: Mon, 30 Mar 2009 17:52:40 -0500
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Fri, 3 Apr 2009 19:25:57 +0200
x86, UV: system table in bios accessed after unmap
Use the copy of UV system table in kernel memory, not the one in
bios after unmapping.
Signed-off-by: Russ Anderson <rja@sgi.com>
LKML-Reference: <20090330225240.GA22776@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/bios_uv.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/bios_uv.c b/arch/x86/kernel/bios_uv.c
index f638827..63a88e1 100644
--- a/arch/x86/kernel/bios_uv.c
+++ b/arch/x86/kernel/bios_uv.c
@@ -182,7 +182,8 @@ void uv_bios_init(void)
memcpy(&uv_systab, tab, sizeof(struct uv_systab));
iounmap(tab);
- printk(KERN_INFO "EFI UV System Table Revision %d\n", tab->revision);
+ printk(KERN_INFO "EFI UV System Table Revision %d\n",
+ uv_systab.revision);
}
#else /* !CONFIG_EFI */
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2009-04-03 17:33 ` [tip:x86/uv] x86, UV: system table in bios accessed after unmap Russ Anderson
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