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x86/sev-es: Handle WBINVD Events 

Implement a handler for #VC exceptions caused by WBINVD instructions.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to #VC handling framework ]
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/20200907131613.12703-54-joro@8bytes.org
This commit is contained in:
Tom Lendacky 2020-09-07 15:15:54 +02:00 committed by Borislav Petkov
parent 479a7bf5c1
commit a14a92fc4b
1 changed files with 9 additions and 0 deletions
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9
arch/x86/kernel/sev-es.c
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@ -847,6 +847,12 @@ static enum es_result vc_handle_dr7_read(struct ghcb *ghcb,
return ES_OK; 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, static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
struct ghcb *ghcb, struct ghcb *ghcb,
unsigned long exit_code) unsigned long exit_code)
@ -869,6 +875,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
case SVM_EXIT_MSR: case SVM_EXIT_MSR:
result = vc_handle_msr(ghcb, ctxt); result = vc_handle_msr(ghcb, ctxt);
break; break;
case SVM_EXIT_WBINVD:
result = vc_handle_wbinvd(ghcb, ctxt);
break;
case SVM_EXIT_NPF: case SVM_EXIT_NPF:
result = vc_handle_mmio(ghcb, ctxt); result = vc_handle_mmio(ghcb, ctxt);
break; break;