From: Keir Fraser Date: Wed, 5 Aug 2009 11:05:34 +0000 (+0100) Subject: xen/x86-64: fix Dom0 boot on AMD K8 CPUs X-Git-Tag: xen-3.4.2~18 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=439643027083ddc7d70b8409ad729508a09540ee;p=legacy%2Flinux-2.6.18-xen.git xen/x86-64: fix Dom0 boot on AMD K8 CPUs The workaround in question here should be (and is being) applied by the hypervisor (which doesn't allow any guest - including Dom0 - to write other than all zeroes or all ones into MCi_CTL). Signed-off-by: Jan Beulich --- diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c index 1519041d..805321b1 100644 --- a/arch/x86_64/kernel/mce.c +++ b/arch/x86_64/kernel/mce.c @@ -362,9 +362,11 @@ static void __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c) { /* This should be disabled by the BIOS, but isn't always */ if (c->x86_vendor == X86_VENDOR_AMD && c->x86 == 15) { +#ifndef CONFIG_XEN /* disable GART TBL walk error reporting, which trips off incorrectly with the IOMMU & 3ware & Cerberus. */ clear_bit(10, &bank[4]); +#endif /* Lots of broken BIOS around that don't clear them by default and leave crap in there. Don't log. */ mce_bootlog = 0;