kvm: x86: Add kvm_x86_ops hook that enables XSAVES for guest

[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kvm / vmx.c

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6a951d823c82e1277e6919341a58f74e720eacf6..dd4fa461454ab5160a4948ee34d512045572e432 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7553,6 +7553,12 @@ static bool vmx_mpx_supported(void)
                (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 @@ static struct kvm_x86_ops vmx_x86_ops = {
        .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,