[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 6/6] AMD-PVH: enable pvh if requirements met
On 06/23/2015 08:30 AM, Jan Beulich wrote: On 22.06.15 at 18:37, <elena.ufimtseva@xxxxxxxxxx> 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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