x86/sev-es: Handle INVD Events

Implement a handler for #VC exceptions caused by INVD instructions.
Since Linux should never use INVD, just mark it as unsupported.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to #VC handling infrastructure ]
Co-developed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-57-joro@8bytes.org

diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
index b2d7287a99751790645d841fc948e6ad74eb693d..236cfc16f69629a658f332f19024b60c04fe8d60 100644 (file)
--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -892,6 +892,10 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
        case SVM_EXIT_RDPMC:
                result = vc_handle_rdpmc(ghcb, ctxt);
                break;
+       case SVM_EXIT_INVD:
+               pr_err_ratelimited("#VC exception for INVD??? Seriously???\n");
+               result = ES_UNSUPPORTED;
+               break;
        case SVM_EXIT_CPUID:
                result = vc_handle_cpuid(ghcb, ctxt);
                break;