From: Eduardo Habkost <ehabkost@redhat.com>
To: Avi Kivity <avi@redhat.com>, Ingo Molnar <mingo@elte.hu>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Simon Horman <horms@verge.net.au>, Andrew Morton <akpm@osdl.org>,
Vivek Goyal <vgoyal@redhat.com>, Haren Myneni <hbabu@us.ibm.com>,
Andrey Borzenkov <arvidjaar@mail.ru>,
mingo@redhat.com, "Rafael J. Wysocki" <rjw@sisk.pl>,
Zachary Amsden <zach@vmware.com>,
kexec@lists.infradead.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Eduardo Habkost <ehabkost@redhat.com>
Subject: [PATCH 10/12] x86: cpu_emergency_svm_disable() function
Date: Mon, 17 Nov 2008 19:03:22 -0200 [thread overview]
Message-ID: <1226955804-16802-11-git-send-email-ehabkost@redhat.com> (raw)
In-Reply-To: <1226955804-16802-1-git-send-email-ehabkost@redhat.com>
This function can be used by the reboot or kdump code to forcibly
disable SVM on the CPU.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
arch/x86/include/asm/virtext.h | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/virtext.h b/arch/x86/include/asm/virtext.h
index 2cfe363..5936362 100644
--- a/arch/x86/include/asm/virtext.h
+++ b/arch/x86/include/asm/virtext.h
@@ -121,4 +121,12 @@ static inline void cpu_svm_disable(void)
wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK);
}
+/** Makes sure SVM is disabled, if it is supported on the CPU
+ */
+static inline void cpu_emergency_svm_disable(void)
+{
+ if (cpu_has_svm(NULL))
+ cpu_svm_disable();
+}
+
#endif /* _ASM_X86_VIRTEX_H */
--
1.5.5.GIT
next prev parent reply other threads:[~2008-11-17 21:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-17 21:03 [PATCH 00/12] x86: disable virt on kdump and emergency_restart (v4) Eduardo Habkost
2008-11-17 21:03 ` [PATCH 01/12] kvm: vmx: move vmx.h to include/asm Eduardo Habkost
2008-11-17 21:03 ` [PATCH 02/12] kvm: svm: move svm.h " Eduardo Habkost
2008-11-17 21:03 ` [PATCH 03/12] kvm: vmx: move ASM_VMX_* definitions from asm/kvm_host.h to asm/vmx.h Eduardo Habkost
2008-11-17 21:03 ` [PATCH 04/12] kvm: vmx: move cpu_has_kvm_support() to an inline on asm/virtext.h Eduardo Habkost
2008-11-17 21:03 ` [PATCH 05/12] x86: asm/virtext.h: add cpu_vmxoff() inline function Eduardo Habkost
2008-11-17 21:03 ` [PATCH 06/12] kvm: vmx: extract kvm_cpu_vmxoff() from hardware_disable() Eduardo Habkost
2008-11-17 21:03 ` [PATCH 07/12] x86: cpu_emergency_vmxoff() function Eduardo Habkost
2008-11-17 21:03 ` [PATCH 08/12] kvm: svm: move has_svm() code to asm/virtext.h Eduardo Habkost
2008-11-17 21:03 ` [PATCH 09/12] kvm: svm: move svm_hardware_disable() " Eduardo Habkost
2008-11-17 21:03 ` Eduardo Habkost [this message]
2008-11-17 21:03 ` [PATCH 11/12] kdump: forcibly disable VMX and SVM on machine_crash_shutdown() Eduardo Habkost
2008-11-17 21:03 ` [PATCH 12/12] x86: disable VMX on all CPUs on reboot Eduardo Habkost
2008-11-18 8:15 ` [PATCH 00/12] x86: disable virt on kdump and emergency_restart (v4) Ingo Molnar
2008-11-21 16:07 ` Avi Kivity
2008-11-21 16:18 ` Ingo Molnar
2008-11-24 14:58 ` Eduardo Habkost
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