linux-kernel - [PATCH v3 2/2] KVM: make crash_clear_loaded_vmcss valid when loading kvm

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Message-ID: <50909C35.9080702@cn.fujitsu.com>
Date:	Wed, 31 Oct 2012 11:34:13 +0800
From:	zhangyanfei <zhangyanfei@...fujitsu.com>
To:	x86@...nel.org, kexec@...ts.infradead.org,
	Avi Kivity <avi@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>
CC:	linux-kernel@...r.kernel.org,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: [PATCH v3 2/2] KVM: make crash_clear_loaded_vmcss valid when loading
 kvm_intel module

Signed-off-by: Zhang Yanfei <zhangyanfei@...fujitsu.com>
---
 arch/x86/kvm/vmx.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4ff0ab9..f6a16b2 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -41,6 +41,7 @@
 #include <asm/i387.h>
 #include <asm/xcr.h>
 #include <asm/perf_event.h>
+#include <asm/kexec.h>
 
 #include "trace.h"
 
@@ -7230,6 +7231,10 @@ static int __init vmx_init(void)
 	if (r)
 		goto out3;
 
+#ifdef CONFIG_KEXEC
+	crash_clear_loaded_vmcss = vmclear_local_loaded_vmcss;
+#endif
+
 	vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
 	vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
 	vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
@@ -7265,6 +7270,10 @@ static void __exit vmx_exit(void)
 	free_page((unsigned long)vmx_io_bitmap_b);
 	free_page((unsigned long)vmx_io_bitmap_a);
 
+#ifdef CONFIG_KEXEC
+	crash_clear_loaded_vmcss = NULL;
+#endif
+
 	kvm_exit();
 }
 
-- 
1.7.1

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