[Xen-changelog] [xen-unstable] hvm svm: No guest access to SVM MSRs.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1182435451 -3600
# Node ID 04d4b7b6f5b752a4375cbb58f6ce3efc207f708a
# Parent  3cf5052ba5e50555eb4893b2576859853d1b9523
hvm svm: No guest access to SVM MSRs.
Signed-off-by: Mats Petersson <mats.petersson@xxxxxxx>
---
 xen/arch/x86/hvm/svm/svm.c |   12 ++++++++++++
 1 files changed, 12 insertions(+)

diff -r 3cf5052ba5e5 -r 04d4b7b6f5b7 xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c        Thu Jun 21 15:10:04 2007 +0100
+++ b/xen/arch/x86/hvm/svm/svm.c        Thu Jun 21 15:17:31 2007 +0100
@@ -2086,9 +2086,11 @@ static inline void svm_do_msr_access(
         case MSR_IA32_TIME_STAMP_COUNTER:
             msr_content = hvm_get_guest_time(v);
             break;
+
         case MSR_IA32_APICBASE:
             msr_content = vcpu_vlapic(v)->hw.apic_base_msr;
             break;
+
         case MSR_EFER:
             msr_content = v->arch.hvm_svm.cpu_shadow_efer;
             break;
@@ -2108,6 +2110,10 @@ static inline void svm_do_msr_access(
              * particularly meaningful, but at least avoids the guest crashing!
              */
             msr_content = 0;
+            break;
+
+        case MSR_K8_VM_HSAVE_PA:
+            svm_inject_exception(v, TRAP_gp_fault, 1, 0);
             break;
 
         default:
@@ -2143,9 +2149,15 @@ static inline void svm_do_msr_access(
             hvm_set_guest_time(v, msr_content);
             pt_reset(v);
             break;
+
         case MSR_IA32_APICBASE:
             vlapic_msr_set(vcpu_vlapic(v), msr_content);
             break;
+
+        case MSR_K8_VM_HSAVE_PA:
+            svm_inject_exception(v, TRAP_gp_fault, 1, 0);
+            break;
+
         default:
             if ( !long_mode_do_msr_write(regs) )
                 wrmsr_hypervisor_regs(ecx, regs->eax, regs->edx);

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