KVM: x86: Prevent KVM SVM from loading on kernels with 5-level paging

[mirror_ubuntu-jammy-kernel.git] / arch / x86 / kvm / svm / svm.c

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 0922d8e173e6190383095ca25e9d1b49f4e74f13..8124f51e9488f3b5e9d7972981352b4bfce2536d 100644 (file)
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -447,6 +447,11 @@ static int has_svm(void)
                return 0;
        }
 
+       if (pgtable_l5_enabled()) {
+               pr_info("KVM doesn't yet support 5-level paging on AMD SVM\n");
+               return 0;
+       }
+
        return 1;
 }