Commit a14a92fc authored by Tom Lendacky's avatar Tom Lendacky Committed by Borislav Petkov
Browse files

x86/sev-es: Handle WBINVD Events 



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

Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to #VC handling framework ]
Co-developed-by: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-54-joro@8bytes.org
parent 479a7bf5

arch/x86/kernel/sev-es.c

+9 −0
Original line number Diff line number Diff line
@@ -847,6 +847,12 @@ static enum es_result vc_handle_dr7_read(struct ghcb *ghcb, 
	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,

					 struct ghcb *ghcb,

					 unsigned long exit_code)
@@ -869,6 +875,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, 
	case SVM_EXIT_MSR:

		result = vc_handle_msr(ghcb, ctxt);

		break;

	case SVM_EXIT_WBINVD:

		result = vc_handle_wbinvd(ghcb, ctxt);

		break;

	case SVM_EXIT_NPF:

		result = vc_handle_mmio(ghcb, ctxt);

		break;