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authorEduardo Habkost <ehabkost@redhat.com>2008-11-17 19:03:16 -0200
committerAvi Kivity <avi@redhat.com>2008-12-31 16:52:28 +0200
commit6210e37b122583643da335c0389f74098713e5ca (patch)
tree779f5a7b90ffec49d2eda03c5f30cf6d79395766
parentKVM: VMX: move ASM_VMX_* definitions from asm/kvm_host.h to asm/vmx.h (diff)
downloadlinux-dev-6210e37b122583643da335c0389f74098713e5ca.tar.xz
linux-dev-6210e37b122583643da335c0389f74098713e5ca.zip
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 <ehabkost@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/x86/include/asm/virtext.h31
-rw-r--r--arch/x86/kvm/vmx.c4
2 files changed, 33 insertions, 2 deletions
diff --git a/arch/x86/include/asm/virtext.h b/arch/x86/include/asm/virtext.h
new file mode 100644
index 000000000000..298b6a06110d
--- /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 ec71f6464cfa..defaeeb3f75c 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/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)