From: Bhavana Nagendra <bnagendr@redhat.com> Subject: Re: [RHEL5.1 PATCH] Fix MCE errors on AMD-V Barcelona Date: Mon, 13 Aug 2007 13:18:53 -0400 Bugzilla: 251435 Message-Id: <46C0927D.70009@redhat.com> Changelog: [XEN] Fix MCE errors on AMD-V always initiate AMD mcheck initialization code in the hypervisor if AMD machine (ie. Remove family check) Bhavana --- xen/arch/x86/cpu/mcheck/mce.c.mceinit 2007-08-10 13:34:38.000000000 -0400 +++ xen/arch/x86/cpu/mcheck/mce.c 2007-08-10 13:37:33.000000000 -0400 @@ -34,8 +34,7 @@ void mcheck_init(struct cpuinfo_x86 *c) switch (c->x86_vendor) { case X86_VENDOR_AMD: - if (c->x86==6 || c->x86==15) - amd_mcheck_init(c); + amd_mcheck_init(c); break; case X86_VENDOR_INTEL: --- xen/arch/x86/cpu/mcheck/k7.c.mceinit 2007-08-10 13:35:45.000000000 -0400 +++ xen/arch/x86/cpu/mcheck/k7.c 2007-08-10 13:36:46.000000000 -0400 @@ -75,6 +75,9 @@ void amd_mcheck_init(struct cpuinfo_x86 machine_check_vector = k7_machine_check; wmb(); + if (!cpu_has(c, X86_FEATURE_MCE)) + return; + printk (KERN_INFO "Intel machine check architecture supported.\n"); rdmsr (MSR_IA32_MCG_CAP, l, h); if (l & (1<<8)) /* Control register present ? */