x86/sev-es: Handle MWAIT/MWAITX Events (ded476bb) · Commits · 戴 / test

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:

arch/x86/kernel/sev-es.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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;