virtio-comment message

Subject: Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking

From: "Michael S. Tsirkin" <mst@redhat.com>
To: Parav Pandit <parav@nvidia.com>
Date: Mon, 6 Nov 2023 06:05:59 -0500

On Mon, Nov 06, 2023 at 10:52:46AM +0000, Parav Pandit wrote:
> I read the pci spec and I see only 3 operations which does not have atomic or.

CAS+retry can be used to implement any atomics including atomic or.

-- 
MST

Follow-Ups:
- RE: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Parav Pandit <parav@nvidia.com>

References:
- [PATCH V2 0/6] introduce basic facilities for virito live migration
  - From: Zhu Lingshan <lingshan.zhu@intel.com>
- [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Zhu Lingshan <lingshan.zhu@intel.com>
- Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: "Michael S. Tsirkin" <mst@redhat.com>
- RE: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Parav Pandit <parav@nvidia.com>
- Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: "Zhu, Lingshan" <lingshan.zhu@intel.com>
- RE: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Parav Pandit <parav@nvidia.com>
- Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: "Zhu, Lingshan" <lingshan.zhu@intel.com>
- RE: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Parav Pandit <parav@nvidia.com>
- Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: "Zhu, Lingshan" <lingshan.zhu@intel.com>
- RE: [PATCH V2 6/6] virtio-pci: implement dirty page tracking
  - From: Parav Pandit <parav@nvidia.com>