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 01/11] kvm: vmx: move cpu_has_kvm_support() to an inline on asm/virtext.h
Date: Thu, 13 Nov 2008 15:43:41 -0200 [thread overview]
Message-ID: <1226598231-18311-2-git-send-email-ehabkost@redhat.com> (raw)
In-Reply-To: <1226598231-18311-1-git-send-email-ehabkost@redhat.com>
It will be used by core code on kdump and reboot, to disable
vmx if needed.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
arch/x86/include/asm/virtext.h | 31 +++++++++++++++++++++++++++++++
arch/x86/kvm/vmx.c | 4 ++--
2 files changed, 33 insertions(+), 2 deletions(-)
create mode 100644 arch/x86/include/asm/virtext.h
diff --git a/arch/x86/include/asm/virtext.h b/arch/x86/include/asm/virtext.h
new file mode 100644
index 0000000..298b6a0
--- /dev/null
+++ b/arch/x86/include/asm/virtext.h
@@ -0,0 +1,31 @@
+/* CPU virtualization extensions handling
+ *
+ * This should carry the code for handling CPU virtualization extensions
+ * that needs to live in the kernel core.
+ *
+ * Author: Eduardo Habkost <ehabkost@redhat.com>
+ *
+ * Copyright (C) 2008, Red Hat Inc.
+ *
+ * Contains code from KVM, Copyright (C) 2006 Qumranet, Inc.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+#ifndef _ASM_X86_VIRTEX_H
+#define _ASM_X86_VIRTEX_H
+
+#include <asm/processor.h>
+#include <asm/system.h>
+
+/*
+ * VMX functions:
+ */
+
+static inline int cpu_has_vmx(void)
+{
+ unsigned long ecx = cpuid_ecx(1);
+ return test_bit(5, &ecx); /* CPUID.1:ECX.VMX[bit 5] -> VT */
+}
+
+#endif /* _ASM_X86_VIRTEX_H */
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d06b4dc..5cde1e3 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -31,6 +31,7 @@
#include <asm/io.h>
#include <asm/desc.h>
+#include <asm/virtext.h>
#define __ex(x) __kvm_handle_fault_on_reboot(x)
@@ -1032,8 +1033,7 @@ static int vmx_get_irq(struct kvm_vcpu *vcpu)
static __init int cpu_has_kvm_support(void)
{
- unsigned long ecx = cpuid_ecx(1);
- return test_bit(5, &ecx); /* CPUID.1:ECX.VMX[bit 5] -> VT */
+ return cpu_has_vmx();
}
static __init int vmx_disabled_by_bios(void)
--
1.5.5.GIT
next prev parent reply other threads:[~2008-11-13 17:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-13 17:43 [PATCH 00/11] x86: disable virt on kdump and emergency_restart (v3) Eduardo Habkost
2008-11-13 17:43 ` Eduardo Habkost [this message]
2008-11-13 17:43 ` [PATCH 02/11] kvm: vmx: move ASM_VMX_* definitions to asm/virtext.h Eduardo Habkost
2008-11-13 17:43 ` [PATCH 03/11] x86: asm/virtext.h: add cpu_vmxoff() inline function Eduardo Habkost
2008-11-13 17:43 ` [PATCH 04/11] kvm: vmx: extract kvm_cpu_vmxoff() from hardware_disable() Eduardo Habkost
2008-11-13 17:43 ` [PATCH 05/11] x86: cpu_emergency_vmxoff() function Eduardo Habkost
2008-11-13 17:43 ` [PATCH 06/11] kvm: svm: move some SVM_* #defines to asm/virtext.h Eduardo Habkost
2008-11-13 17:43 ` [PATCH 07/11] kvm: svm: move has_svm() code " Eduardo Habkost
2008-11-13 17:43 ` [PATCH 08/11] kvm: svm: move svm_hardware_disable() " Eduardo Habkost
2008-11-13 17:43 ` [PATCH 09/11] x86: asm/virtext.h: create cpu_emergency_svm_disable() Eduardo Habkost
2008-11-13 17:43 ` [PATCH 10/11] kdump: forcibly disable VMX and SVM on machine_crash_shutdown() Eduardo Habkost
2008-11-13 17:43 ` [PATCH 11/11] x86: disable VMX on all CPUs on reboot Eduardo Habkost
[not found] ` <1226598231-18311-1-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-16 7:57 ` [PATCH 00/11] x86: disable virt on kdump and emergency_restart (v3) Avi Kivity
[not found] ` <491FD283.60402-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-17 15:04 ` Eduardo Habkost
2008-11-17 15:12 ` Avi Kivity
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