On 06/23/2015 08:30 AM, Jan Beulich wrote:
On 22.06.15 at 18:37, <elena.ufimts...@oracle.com> wrote:
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -1444,6 +1444,9 @@ const struct hvm_function_table * __init
start_svm(void)
svm_function_table.hap_capabilities = HVM_HAP_SUPERPAGE_2MB |
((cpuid_edx(0x80000001) & 0x04000000) ? HVM_HAP_SUPERPAGE_1GB : 0);
+ if ( cpu_has_svm_npt && cpu_has_svm_decode )
+ svm_function_table.pvh_supported = 1;
If svm_decode indeed is a prereq, then the earlier patch dealing
with the handle_mmio() invocations doesn't need to fiddle with
VMEXIT_INVLPG other than to maybe add a documenting ASSERT().
I am not sure we should require decode feature to be required for PVH
support. I can't remember exactly but I think this feature was first
introduced in family 15h so requiring it will leave at least family 10h
processors as not supporting PVH.
-boris
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