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Commit 0b76e20b authored by Avi Kivity's avatar Avi Kivity Committed by Linus Torvalds
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[PATCH] KVM: API versioning 



Add compile-time and run-time API versioning.

Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 0f8e3d36

drivers/kvm/kvm_main.c

+3 −0
Original line number Diff line number Diff line
@@ -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)

include/linux/kvm.h

+3 −0
Original line number Diff line number Diff line
@@ -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)