https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224476
Bug ID: 224476
Summary: [patch] bhyve: emulate MSR_EXTFEATURES
Product: Base System
Version: CURRENT
Hardware: amd64
OS: Any
Status: New
Keywords: patch
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Keywords: patch
When I try to boot a vm on AMD FX Series, it hangs.
The reason probably is that the VM cannot read the register (MSR_EXTFEATURES).
Index: sys/amd64/vmm/amd/svm_msr.c
===================================================================
--- sys/amd64/vmm/amd/svm_msr.c (revision 327021)
+++ sys/amd64/vmm/amd/svm_msr.c (working copy)
@@ -125,6 +125,9 @@
case MSR_AMDK8_IPM:
*result = 0;
break;
+ case MSR_EXTFEATURES:
+ *result = 0;
+ break;
default:
error = EINVAL;
break;
@@ -161,6 +164,8 @@
* Ignore writes to microcode update register.
*/
break;
+ case MSR_EXTFEATURES:
+ break;
default:
error = EINVAL;
break;
--
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