* [patch bugfix] UV system table in bios accessed after unmap
@ 2009-03-30 22:52 Russ Anderson
0 siblings, 0 replies; only message in thread
From: Russ Anderson @ 2009-03-30 22:52 UTC (permalink / raw)
To: linux-next, Ingo Molnar; +Cc: Russ Anderson
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>
---
arch/x86/kernel/bios_uv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux-next/arch/x86/kernel/bios_uv.c
===================================================================
--- linux-next.orig/arch/x86/kernel/bios_uv.c 2009-03-30 17:39:26.622178261 -0500
+++ linux-next/arch/x86/kernel/bios_uv.c 2009-03-30 17:44:12.703957062 -0500
@@ -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 */
--
Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc rja@sgi.com
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