The following commit has been merged into the x86/seves branch of tip: Commit-ID: ded476bbe203e59cb571d6c576f680efe4a0ddff Gitweb: https://git.kernel.org/tip/ded476bbe203e59cb571d6c576f680efe4a0ddff Author: Tom Lendacky <thomas.lendacky@xxxxxxx> AuthorDate: Mon, 07 Sep 2020 15:15:59 +02:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Wed, 09 Sep 2020 11:33:20 +02:00 x86/sev-es: Handle MWAIT/MWAITX Events Implement a handler for #VC exceptions caused by MWAIT and MWAITX instructions. Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx> [ jroedel@xxxxxxx: Adapt to #VC handling infrastructure ] Co-developed-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lkml.kernel.org/r/20200907131613.12703-59-joro@xxxxxxxxxx --- arch/x86/kernel/sev-es.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index b9976e7..2aea903 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -882,6 +882,13 @@ static enum es_result vc_handle_monitor(struct ghcb *ghcb, return ES_OK; } +static enum es_result vc_handle_mwait(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + /* Treat the same as MONITOR/MONITORX */ + return ES_OK; +} + static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code) @@ -921,6 +928,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_MONITOR: result = vc_handle_monitor(ghcb, ctxt); break; + case SVM_EXIT_MWAIT: + result = vc_handle_mwait(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = vc_handle_mmio(ghcb, ctxt); break;
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