On Tue, Jun 23, 2009 at 12:57:53PM +0300, Avi Kivity wrote:
On 06/23/2009 11:56 AM, Michael S. Tsirkin wrote:
On Thu, Jun 18, 2009 at 08:30:46PM -0400, Gregory Haskins wrote:Userspace could create an eventfd for this control queue and wait for it
+static intI think I see a problem here. For virtio, we do not necessarily want all
+iosignalfd_group_in_range(struct kvm_io_device *this, gpa_t addr, int len,
+ int is_write)
+ struct _iosignalfd_group *p = to_group(this);
+ return ((addr>= p->addr&& (addr< p->addr + p->length)));
virtqueues for a device to live in kernel: there might be control
virtqueues that we want to leave in userspace. Since this claims all
writes to a specific address, the signal never makes it to userspace.
What if guest writes an unexpected value there?
The value it simply lost ... that's not very elegant.