From 3ad8ef602620bdc428a6de55014605aebf78794e Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Fri, 14 Aug 2009 10:57:24 +0100 Subject: [PATCH] hvm: handle access to MSR_AMD64_NB_CFG Signed-off-by: Christoph Egger --- xen/arch/x86/hvm/hvm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index 59a835e3b6..650c29af23 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -1842,8 +1842,9 @@ int hvm_msr_read_intercept(struct cpu_user_regs *regs) break; case MSR_K8_ENABLE_C1E: - /* There's no point in letting the guest see C-States. - * Further, this AMD-only register may be accessed if this HVM guest + case MSR_AMD64_NB_CFG: + /* + * These AMD-only registers may be accessed if this HVM guest * has been migrated to an Intel host. This fixes a guest crash * in this case. */ @@ -1949,6 +1950,10 @@ int hvm_msr_write_intercept(struct cpu_user_regs *regs) goto gp_fault; break; + case MSR_AMD64_NB_CFG: + /* ignore the write */ + break; + default: ret = mce_wrmsr(ecx, msr_content); if ( ret < 0 ) -- 2.30.2