Messages in this thread Patch in this message | | | Subject | [patch] i386 need to pass virtual address to smp_read_mpc() | From | Daniel Yeisley <> | Date | Fri, 17 Feb 2006 15:24:40 -0500 |
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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> ---
diff -Naur -p linux-2.6.16-rc1-git3-7/arch/i386/kernel/mpparse.c linux-2.6.16-rc1-git3-7-a/arch/i386/kernel/mpparse.c --- linux-2.6.16-rc1-git3-7/arch/i386/kernel/mpparse.c 2006-01-30 18:38:18.000000000 -0500 +++ linux-2.6.16-rc1-git3-7-a/arch/i386/kernel/mpparse.c 2006-02-16 04:51:35.551014272 -0500 @@ -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");
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