lkml.org 
[lkml]   [2007]   [Mar]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [kvm-devel] [PATCH 01/15] KVM: Use a shared page for kernel/user communication when runing a vcpu
From
Date
On Wed, 2007-03-14 at 21:38 -0500, Hollis Blanchard wrote:
> 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.

Never mind: I see now that you have separate device nodes for the VM vs
each vcpu.

-Hollis

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

\
 
 \ /
  Last update: 2007-03-15 04:13    [W:0.096 / U:0.216 seconds]
©2003-2014 Jasper Spaans. Advertise on this site