From: Russ Anderson <rja@sgi.com>
Date: Mon, 30 Mar 2009 22:52:40 +0000 (-0500)
Subject: x86, UV: system table in bios accessed after unmap
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1a544e659cbfce178395e9a090a47d1907d0cfa8;p=linux-beck.git

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>
---

diff --git a/arch/x86/kernel/bios_uv.c b/arch/x86/kernel/bios_uv.c
index f63882728d91..63a88e1f987d 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 */