linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jason Gunthorpe <jgg@nvidia.com>
To: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
	"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
	"mgurtovoy@nvidia.com" <mgurtovoy@nvidia.com>,
	Linuxarm <linuxarm@huawei.com>,
	liulongfang <liulongfang@huawei.com>,
	"Zengtao (B)" <prime.zeng@hisilicon.com>,
	yuzenghui <yuzenghui@huawei.com>,
	Jonathan Cameron <jonathan.cameron@huawei.com>,
	"Wangzhou (B)" <wangzhou1@hisilicon.com>
Subject: Re: [RFC v2 0/4] vfio/hisilicon: add acc live migration driver
Date: Wed, 2 Feb 2022 13:03:29 -0400	[thread overview]
Message-ID: <20220202170329.GV1786498@nvidia.com> (raw)
In-Reply-To: <c8a0731c589e49068a78afcc73d66bfa@huawei.com>

On Wed, Feb 02, 2022 at 04:10:06PM +0000, Shameerali Kolothum Thodi wrote:
> 
> 
> > From: Jason Gunthorpe [mailto:jgg@nvidia.com]
> > Sent: 02 February 2022 15:40
> > To: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
> > Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org;
> > linux-crypto@vger.kernel.org; alex.williamson@redhat.com;
> > mgurtovoy@nvidia.com; Linuxarm <linuxarm@huawei.com>; liulongfang
> > <liulongfang@huawei.com>; Zengtao (B) <prime.zeng@hisilicon.com>;
> > yuzenghui <yuzenghui@huawei.com>; Jonathan Cameron
> > <jonathan.cameron@huawei.com>; Wangzhou (B) <wangzhou1@hisilicon.com>
> > Subject: Re: [RFC v2 0/4] vfio/hisilicon: add acc live migration driver
> > 
> > On Wed, Feb 02, 2022 at 02:34:52PM +0000, Shameerali Kolothum Thodi
> > wrote:
> > 
> > > > There are few topics to consider:
> > > >  - Which of the three feature sets (STOP_COPY, P2P and PRECOPY) make
> > > >    sense for this driver?
> > >
> > > I think it will be STOP_COPY only for now. We might have PRECOPY
> > > feature once we have the SMMUv3 HTTU support in future.
> > 
> > HTTU is the dirty tracking feature? To be clear VFIO migration support for
> > PRECOPY has nothing to do with IOMMU based dirty page tracking.
> 
> Yes, it is based on the IOMMU hardware dirty bit management support.
> A RFC was posted sometime back,
> https://lore.kernel.org/kvm/20210507103608.39440-1-zhukeqian1@huawei.com/

Yes, I saw that. I was hoping to have a discussion on this soon about
how to integrate that with the iommufd work, which I hope will allow
that series, and the other IOMMU drivers that can support this to be
merged..

Jason

  reply	other threads:[~2022-02-02 17:03 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02  9:58 [RFC v2 0/4] vfio/hisilicon: add acc live migration driver Shameer Kolothum
2021-07-02  9:58 ` [RFC v2 1/4] hisi-acc-vfio-pci: add new vfio_pci driver for HiSilicon ACC devices Shameer Kolothum
2021-07-02 20:29   ` Alex Williamson
2021-07-05  7:20     ` Shameerali Kolothum Thodi
2021-07-04  7:03   ` Leon Romanovsky
2021-07-05  8:47     ` Shameerali Kolothum Thodi
2021-07-05  9:41       ` Max Gurtovoy
2021-07-05 10:18         ` Shameerali Kolothum Thodi
2021-07-05 18:27           ` Leon Romanovsky
2021-07-05 18:32             ` Jason Gunthorpe
2021-07-06  3:59               ` Leon Romanovsky
2021-07-06  4:39               ` Christoph Hellwig
2021-07-06 11:51                 ` Jason Gunthorpe
2021-07-02  9:58 ` [RFC v2 2/4] hisi_acc_vfio_pci: Override ioctl method to limit BAR2 region size Shameer Kolothum
2021-07-02 20:29   ` Alex Williamson
2021-07-05  7:22     ` Shameerali Kolothum Thodi
2021-07-02  9:58 ` [RFC v2 3/4] crypto: hisilicon/qm - Export mailbox functions for common use Shameer Kolothum
2021-07-04  9:34   ` Max Gurtovoy
2021-07-05 10:23     ` Shameerali Kolothum Thodi
2021-07-02  9:58 ` [RFC v2 4/4] hisi_acc_vfio_pci: Add support for vfio live migration Shameer Kolothum
2022-02-02 13:14 ` [RFC v2 0/4] vfio/hisilicon: add acc live migration driver Jason Gunthorpe
2022-02-02 14:34   ` Shameerali Kolothum Thodi
2022-02-02 15:39     ` Jason Gunthorpe
2022-02-02 16:10       ` Shameerali Kolothum Thodi
2022-02-02 17:03         ` Jason Gunthorpe [this message]
2022-02-02 19:05           ` Joao Martins
2022-02-03 15:18             ` Jason Gunthorpe
2022-02-04 19:53               ` Joao Martins
2022-02-04 23:07                 ` Jason Gunthorpe
2022-02-11 17:28                   ` Joao Martins
2022-02-11 17:49                     ` Jason Gunthorpe
2022-02-11 21:43                       ` Joao Martins
2022-02-12  0:01                         ` Jason Gunthorpe
2022-02-14 13:34                           ` Joao Martins
2022-02-14 14:06                             ` Jason Gunthorpe
2022-02-15 16:00                               ` Joao Martins
2022-02-15 16:21                                 ` Jason Gunthorpe
2022-02-22 11:55                                   ` Joao Martins
2022-02-23  1:03                                     ` Jason Gunthorpe
2022-02-25 19:18                                       ` Joao Martins
2022-02-25 20:44                                         ` Jason Gunthorpe
2022-02-28 13:01                                           ` Joao Martins
2022-02-28 21:01                                             ` Jason Gunthorpe
2022-03-01 13:06                                               ` Joao Martins
2022-03-01 13:54                                                 ` Jason Gunthorpe
2022-03-01 14:27                                                   ` Joao Martins
2022-03-11 13:51                                             ` iommufd(+vfio-compat) dirty tracking (Was: Re: [RFC v2 0/4] vfio/hisilicon: add acc live migration driver) Joao Martins
2022-03-15 19:29                                               ` Jason Gunthorpe
2022-03-16 16:36                                                 ` iommufd(+vfio-compat) dirty tracking Joao Martins
2022-03-16 20:37                                                   ` Joao Martins
2022-03-18 17:12                                                     ` Joao Martins
2022-03-18 17:34                                                       ` Jason Gunthorpe
2022-02-02 17:30     ` [RFC v2 0/4] vfio/hisilicon: add acc live migration driver Alex Williamson
2022-02-02 18:04       ` Jason Gunthorpe
2022-02-18 16:37 ` Jason Gunthorpe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220202170329.GV1786498@nvidia.com \
    --to=jgg@nvidia.com \
    --cc=alex.williamson@redhat.com \
    --cc=jonathan.cameron@huawei.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxarm@huawei.com \
    --cc=liulongfang@huawei.com \
    --cc=mgurtovoy@nvidia.com \
    --cc=prime.zeng@hisilicon.com \
    --cc=shameerali.kolothum.thodi@huawei.com \
    --cc=wangzhou1@hisilicon.com \
    --cc=yuzenghui@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).