From 6210e37b122583643da335c0389f74098713e5ca Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Mon, 17 Nov 2008 19:03:16 -0200 Subject: KVM: VMX: move cpu_has_kvm_support() to an inline on asm/virtext.h It will be used by core code on kdump and reboot, to disable vmx if needed. Signed-off-by: Eduardo Habkost Signed-off-by: Avi Kivity --- 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 (limited to 'arch') 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 + * + * 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 +#include + +/* + * 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 ec71f64..defaeeb 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -31,6 +31,7 @@ #include #include #include +#include #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) -- cgit v1.1