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[PATCH] i386: need to pass virtual address to smp_read_mpc() 

I'm seeing a kernel panic on an ES7000-600 when booting in virtual wire
mode.  The panic happens because smp_read_mpc() is passed a physical
address, and it should be virtual.  I tested the attached patch on the
ES7000-600 and on a 2 cpu Dell box, and saw no problems on either.

Signed-off-by: Dan Yeisley <dan.yeisley@unisys.com>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Daniel Yeisley 2006-02-20 18:27:54 -08:00 committed by Linus Torvalds
parent 9b0f8b040a
commit 7d4c8e5610
1 changed files with 1 additions and 1 deletions
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2
arch/i386/kernel/mpparse.c
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@ -710,7 +710,7 @@ void __init get_smp_config (void)
* Read the physical hardware table. Anything here will
* override the defaults.
*/
if (!smp_read_mpc((void *)mpf->mpf_physptr)) {
if (!smp_read_mpc(phys_to_virt(mpf->mpf_physptr))) {
smp_found_config = 0;
printk(KERN_ERR "BIOS bug, MP table errors detected!...\n");
printk(KERN_ERR "... disabling SMP support. (tell your hw vendor)\n");