[lkml]   [2020]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v3 00/21] KVM: Dirty ring interface
On 09/01/20 20:13, Michael S. Tsirkin wrote:
> That's one of the reasons I called for using something
> resembling vring_packed_desc.

In principle it could make sense to use the ring-wrap detection
mechanism from vring_packed_desc instead of the producer/consumer
indices. However, the element address/length indirection is unnecessary.

Also, unlike virtio, KVM needs to know if there are N free entries (N is
~512) before running a guest. I'm not sure if that is possible with
ring-wrap counters, while it's trivial with producer/consumer indices.


 \ /
  Last update: 2020-01-09 21:53    [W:0.096 / U:1.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site