kvm: x86: Add kvm_x86_ops hook that enables XSAVES for guest
Expose the XSAVES feature to the guest if the kvm_x86_ops say it is
available.
Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6a951d8..dd4fa46 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7553,6 +7553,12 @@
(vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_BNDCFGS);
}
+static bool vmx_xsaves_supported(void)
+{
+ return vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_XSAVES;
+}
+
static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
{
u32 exit_intr_info;
@@ -9329,6 +9335,7 @@
.check_intercept = vmx_check_intercept,
.handle_external_intr = vmx_handle_external_intr,
.mpx_supported = vmx_mpx_supported,
+ .xsaves_supported = vmx_xsaves_supported,
.check_nested_events = vmx_check_nested_events,
