Module Name: src
Committed By: maxv
Date: Sat May 18 08:54:38 UTC 2019
Modified Files:
src/sys/arch/x86/x86: spectre.c
Log Message:
Use XC_HIGHPRI for SpectreV2 to reduce the CPU downtime. We already do this
for MDS.
To generate a diff of this commit:
cvs rdiff -u -r1.27 -r1.28 src/sys/arch/x86/x86/spectre.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/spectre.c
diff -u src/sys/arch/x86/x86/spectre.c:1.27 src/sys/arch/x86/x86/spectre.c:1.28
--- src/sys/arch/x86/x86/spectre.c:1.27 Tue May 14 16:59:26 2019
+++ src/sys/arch/x86/x86/spectre.c Sat May 18 08:54:38 2019
@@ -1,7 +1,7 @@
-/* $NetBSD: spectre.c,v 1.27 2019/05/14 16:59:26 maxv Exp $ */
+/* $NetBSD: spectre.c,v 1.28 2019/05/18 08:54:38 maxv Exp $ */
/*
- * Copyright (c) 2018 NetBSD Foundation, Inc.
+ * Copyright (c) 2018-2019 NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
@@ -30,11 +30,11 @@
*/
/*
- * Mitigations for the SpectreV2 and SpectreV4 CPU flaws.
+ * Mitigations for the SpectreV2, SpectreV4 and MDS CPU flaws.
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: spectre.c,v 1.27 2019/05/14 16:59:26 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: spectre.c,v 1.28 2019/05/18 08:54:38 maxv Exp $");
#include "opt_spectre.h"
@@ -328,7 +328,7 @@ mitigation_v2_change(bool enabled)
printf("[+] %s SpectreV2 Mitigation...",
enabled ? "Enabling" : "Disabling");
- xc = xc_broadcast(0, mitigation_v2_change_cpu,
+ xc = xc_broadcast(XC_HIGHPRI, mitigation_v2_change_cpu,
(void *)enabled, NULL);
xc_wait(xc);
printf(" done!\n");
