Re: [kvm-devel] [PATCH 01/15] KVM: Use a shared page forkernel/user communication when runing a vcpu

[Hollis Blanchard]

On Sun, 2007-03-11 at 15:53 +0200, Avi Kivity wrote:
> Instead of passing a 'struct kvm_run' back and forth between the
> kernel and userspace, allocate a page and allow the user to mmap() it.
> This reduces needless copying and makes the interface expandable by
> providing lots of free space.

Do you provide for another means of accessing guest memory from host
userspace? For example, how do you attach a host debugger to the guest?

Xen uses an ioctl followed by mmap for this purpose, which is why I
wonder about using mmap(/dev/kvm) for another purpose.

-Hollis

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/