KVM: Add cpuid_update() callback to kvm_x86_ops
Sometime, we need to adjust some state in order to reflect guest CPUID
setting, e.g. if we don't expose rdtscp to guest, we won't want to enable
it on hardware. cpuid_update() is introduced for this purpose.
Also export kvm_find_cpuid_entry() for later use.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1d9b338..41777e6 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2852,6 +2852,10 @@
return 0;
}
+static void svm_cpuid_update(struct kvm_vcpu *vcpu)
+{
+}
+
static const struct trace_print_flags svm_exit_reasons_str[] = {
{ SVM_EXIT_READ_CR0, "read_cr0" },
{ SVM_EXIT_READ_CR3, "read_cr3" },
@@ -2976,6 +2980,8 @@
.exit_reasons_str = svm_exit_reasons_str,
.gb_page_enable = svm_gb_page_enable,
+
+ .cpuid_update = svm_cpuid_update,
};
static int __init svm_init(void)