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[43/62] x86/sev-es: Handle WBINVD Events

Message ID 20200211135256.24617-44-joro@8bytes.org (mailing list archive)
State New, archived
Headers show
Series Linux as SEV-ES Guest Support | expand

Commit Message

Joerg Roedel Feb. 11, 2020, 1:52 p.m. UTC 
From: Tom Lendacky <thomas.lendacky@amd.com>

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>
---
 arch/x86/kernel/sev-es.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
index fcd67ab04d2d..491537b770fd 100644
--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -266,6 +266,12 @@  static enum es_result handle_dr7_read(struct ghcb *ghcb,
 	return ES_OK;
 }
 
+static enum es_result handle_wbinvd(struct ghcb *ghcb,
+				    struct es_em_ctxt *ctxt)
+{
+	return ghcb_hv_call(ghcb, ctxt, SVM_EXIT_WBINVD, 0, 0);
+}
+
 static enum es_result handle_vc_exception(struct es_em_ctxt *ctxt,
 					  struct ghcb *ghcb,
 					  unsigned long exit_code,
@@ -289,6 +295,9 @@  static enum es_result handle_vc_exception(struct es_em_ctxt *ctxt,
 	case SVM_EXIT_MSR:
 		result = handle_msr(ghcb, ctxt);
 		break;
+	case SVM_EXIT_WBINVD:
+		result = handle_wbinvd(ghcb, ctxt);
+		break;
 	case SVM_EXIT_NPF:
 		result = handle_mmio(ghcb, ctxt);
 		break;