svn commit: r282296 - head/sys/amd64/vmm/amd
Neel Natu
neel at FreeBSD.org
Fri May 1 05:11:15 UTC 2015
Author: neel
Date: Fri May 1 05:11:14 2015
New Revision: 282296
URL: https://svnweb.freebsd.org/changeset/base/282296
Log:
Emulate MSR_SYSCFG which is accessed by Linux on AMD cpus when MTRRs are
enabled.
MFC after: 2 weeks
Modified:
head/sys/amd64/vmm/amd/svm_msr.c
Modified: head/sys/amd64/vmm/amd/svm_msr.c
==============================================================================
--- head/sys/amd64/vmm/amd/svm_msr.c Fri May 1 05:01:56 2015 (r282295)
+++ head/sys/amd64/vmm/amd/svm_msr.c Fri May 1 05:11:14 2015 (r282296)
@@ -115,6 +115,7 @@ svm_rdmsr(struct svm_softc *sc, int vcpu
case MSR_MTRR4kBase ... MSR_MTRR4kBase + 8:
case MSR_MTRR16kBase ... MSR_MTRR16kBase + 1:
case MSR_MTRR64kBase:
+ case MSR_SYSCFG:
*result = 0;
break;
case MSR_AMDK8_IPM:
@@ -141,6 +142,7 @@ svm_wrmsr(struct svm_softc *sc, int vcpu
case MSR_MTRR4kBase ... MSR_MTRR4kBase + 8:
case MSR_MTRR16kBase ... MSR_MTRR16kBase + 1:
case MSR_MTRR64kBase:
+ case MSR_SYSCFG:
break; /* Ignore writes */
case MSR_AMDK8_IPM:
/*
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