From 1eb46908b35dfbac0ec1848d4b1e39667e0187e9 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 15 Aug 2018 08:38:33 -0700 Subject: x86/l1tf: Fix build error seen if CONFIG_KVM_INTEL is disabled From: Guenter Roeck commit 1eb46908b35dfbac0ec1848d4b1e39667e0187e9 upstream. allmodconfig+CONFIG_INTEL_KVM=n results in the following build error. ERROR: "l1tf_vmx_mitigation" [arch/x86/kvm/kvm.ko] undefined! Fixes: 5b76a3cff011 ("KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry") Reported-by: Meelis Roos Cc: Meelis Roos Cc: Paolo Bonzini Cc: Thomas Gleixner Signed-off-by: Guenter Roeck Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/bugs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -648,10 +648,9 @@ void x86_spec_ctrl_setup_ap(void) enum l1tf_mitigations l1tf_mitigation __ro_after_init = L1TF_MITIGATION_FLUSH; #if IS_ENABLED(CONFIG_KVM_INTEL) EXPORT_SYMBOL_GPL(l1tf_mitigation); - +#endif enum vmx_l1d_flush_state l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO; EXPORT_SYMBOL_GPL(l1tf_vmx_mitigation); -#endif static void __init l1tf_select_mitigation(void) {