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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-09-07 15:15:59 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-09 11:33:20 +0200 |
| commit | ded476bbe203e59cb571d6c576f680efe4a0ddff (patch) | |
| tree | 2ae890a5dfe6673e7e7329d66f5e38a2e5c0f013 /arch/x86/kernel/sev-es.c | |
| parent | 0c2fd2ef64ef1a91d81c2f61309735ac438b68a4 (diff) | |
| download | linux-stable-ded476bbe203e59cb571d6c576f680efe4a0ddff.tar.gz linux-stable-ded476bbe203e59cb571d6c576f680efe4a0ddff.tar.bz2 linux-stable-ded476bbe203e59cb571d6c576f680efe4a0ddff.zip | |
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@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/20200907131613.12703-59-joro@8bytes.org
Diffstat (limited to 'arch/x86/kernel/sev-es.c')
| -rw-r--r-- | arch/x86/kernel/sev-es.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index b9976e710d77..2aea903ceb42 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; |