Module Name: src
Committed By: maxv
Date: Sun Jan 13 10:07:50 UTC 2019
Modified Files:
src/sys/dev/nvmm/x86: nvmm_x86_svm.c
Log Message:
Reset DR7 before loading DR0-3, to prevent a fault if the host process
has dbregs enabled.
To generate a diff of this commit:
cvs rdiff -u -r1.14 -r1.15 src/sys/dev/nvmm/x86/nvmm_x86_svm.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/dev/nvmm/x86/nvmm_x86_svm.c
diff -u src/sys/dev/nvmm/x86/nvmm_x86_svm.c:1.14 src/sys/dev/nvmm/x86/nvmm_x86_svm.c:1.15
--- src/sys/dev/nvmm/x86/nvmm_x86_svm.c:1.14 Thu Jan 10 06:58:36 2019
+++ src/sys/dev/nvmm/x86/nvmm_x86_svm.c Sun Jan 13 10:07:50 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: nvmm_x86_svm.c,v 1.14 2019/01/10 06:58:36 maxv Exp $ */
+/* $NetBSD: nvmm_x86_svm.c,v 1.15 2019/01/13 10:07:50 maxv Exp $ */
/*
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nvmm_x86_svm.c,v 1.14 2019/01/10 06:58:36 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nvmm_x86_svm.c,v 1.15 2019/01/13 10:07:50 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -1128,6 +1128,8 @@ svm_vcpu_guest_dbregs_enter(struct nvmm_
x86_dbregs_save(curlwp);
+ ldr7(0);
+
ldr0(cpudata->drs[NVMM_X64_DR_DR0]);
ldr1(cpudata->drs[NVMM_X64_DR_DR1]);
ldr2(cpudata->drs[NVMM_X64_DR_DR2]);
