Commit 7d4c8e56 authored Feb 20, 2006 by Daniel Yeisley Committed by Linus Torvalds Feb 20, 2006

[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>

parent 9b0f8b04

arch/i386/kernel/mpparse.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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");