[PATCH v6 61/76] x86/sev-es: Handle MWAIT/MWAITX Events
From: Joerg Roedel <joro@8bytes.org>
Date: 2020-08-24 09:05:27
Also in:
kvm, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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 <redacted> Signed-off-by: Joerg Roedel <redacted> Link: https://lore.kernel.org/r/20200724160336.5435-61-joro@8bytes.org (local) --- 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 c7324cd0a4d6..76eff9be2510 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;
--
2.28.0
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