From a14a92fc4b420ae6713800a8ae8c3686c1a1fa20 Mon Sep 17 00:00:00 2001 From: Tom Lendacky Date: Mon, 7 Sep 2020 15:15:54 +0200 Subject: [PATCH] x86/sev-es: Handle WBINVD Events Implement a handler for #VC exceptions caused by WBINVD instructions. Signed-off-by: Tom Lendacky [ jroedel@suse.de: Adapt to #VC handling framework ] Co-developed-by: Joerg Roedel Signed-off-by: Joerg Roedel Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200907131613.12703-54-joro@8bytes.org --- arch/x86/kernel/sev-es.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 391b9c7f73128..aba27c3c16335 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -847,6 +847,12 @@ static enum es_result vc_handle_dr7_read(struct ghcb *ghcb, return ES_OK; } +static enum es_result vc_handle_wbinvd(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + return sev_es_ghcb_hv_call(ghcb, ctxt, SVM_EXIT_WBINVD, 0, 0); +} + static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code) @@ -869,6 +875,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_MSR: result = vc_handle_msr(ghcb, ctxt); break; + case SVM_EXIT_WBINVD: + result = vc_handle_wbinvd(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = vc_handle_mmio(ghcb, ctxt); break; -- 2.30.2