Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH v4 60/75] x86/sev-es: Handle MWAIT/MWAITX Events | Date | Tue, 14 Jul 2020 14:09:02 +0200 |
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From: Tom Lendacky <thomas.lendacky@amd.com>
Implement a handler for #VC exceptions caused by MWAIT and MWAITX instructions.
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> --- 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 c0977bdc400e..541f8994eb21 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -888,6 +888,13 @@ 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) @@ -927,6 +934,9 @@ 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; -- 2.27.0
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