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KVM: VMX: move cpu_has_kvm_support() to an inline on asm/virtext.h

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It will be used by core code on kdump and reboot, to disable
vmx if needed.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Eduardo Habkost 2008-11-17 19:03:16 -02:00 committed by Avi Kivity
parent eca70fc567
commit 6210e37b12
2 changed files with 33 additions and 2 deletions
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31
arch/x86/include/asm/virtext.h Normal file
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@ -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 */

4
arch/x86/kvm/vmx.c
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@ -31,6 +31,7 @@
#include <asm/io.h>
#include <asm/desc.h>
#include <asm/vmx.h>
#include <asm/virtext.h>
#define __ex(x) __kvm_handle_fault_on_reboot(x)
@ -1044,8 +1045,7 @@ 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)