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[PATCH] KVM: API versioning

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Add compile-time and run-time API versioning.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Avi Kivity 2006-12-22 01:06:02 -08:00 committed by Linus Torvalds
parent 0f8e3d365a
commit 0b76e20b27
2 changed files with 6 additions and 0 deletions
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3
drivers/kvm/kvm_main.c
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@ -1603,6 +1603,9 @@ static long kvm_dev_ioctl(struct file *filp,
int r = -EINVAL;
switch (ioctl) {
case KVM_GET_API_VERSION:
r = KVM_API_VERSION;
break;
case KVM_CREATE_VCPU: {
r = kvm_dev_ioctl_create_vcpu(kvm, arg);
if (r)

3
include/linux/kvm.h
View file

@ -11,6 +11,8 @@
#include <asm/types.h>
#include <linux/ioctl.h>
#define KVM_API_VERSION 1
/*
* Architectural interrupt line count, and the size of the bitmap needed
* to hold them.
@ -209,6 +211,7 @@ struct kvm_dirty_log {
#define KVMIO 0xAE
#define KVM_GET_API_VERSION _IO(KVMIO, 1)
#define KVM_RUN _IOWR(KVMIO, 2, struct kvm_run)
#define KVM_GET_REGS _IOWR(KVMIO, 3, struct kvm_regs)
#define KVM_SET_REGS _IOW(KVMIO, 4, struct kvm_regs)