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From: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
To: Leon Romanovsky <leon@kernel.org>
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>,
	"jgg@nvidia.com" <jgg@nvidia.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 1/4] hisi-acc-vfio-pci: add new vfio_pci driver for HiSilicon ACC devices
Date: Mon, 5 Jul 2021 08:47:23 +0000	[thread overview]
Message-ID: <fc9d6b0b82254fbdb1cc96365b5bdef3@huawei.com> (raw)
In-Reply-To: <YOFdTnlkcDZzw4b/@unreal>



> -----Original Message-----
> From: Leon Romanovsky [mailto:leon@kernel.org]
> Sent: 04 July 2021 08:04
> 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; jgg@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 1/4] hisi-acc-vfio-pci: add new vfio_pci driver for HiSilicon
> ACC devices
> 
> On Fri, Jul 02, 2021 at 10:58:46AM +0100, Shameer Kolothum wrote:
> > Add a vendor-specific vfio_pci driver for HiSilicon ACC devices.
> > This will be extended in follow-up patches to add support for
> > vfio live migration feature.
> >
> > Signed-off-by: Shameer Kolothum
> <shameerali.kolothum.thodi@huawei.com>
> > ---
> >  drivers/vfio/pci/Kconfig             |   9 +++
> >  drivers/vfio/pci/Makefile            |   2 +
> >  drivers/vfio/pci/hisi_acc_vfio_pci.c | 100 +++++++++++++++++++++++++++
> >  3 files changed, 111 insertions(+)
> >  create mode 100644 drivers/vfio/pci/hisi_acc_vfio_pci.c
> 
> <...>
> 
> > +static const struct vfio_device_ops hisi_acc_vfio_pci_ops = {
> > +	.name		= "hisi-acc-vfio-pci",
> > +	.open		= hisi_acc_vfio_pci_open,
> > +	.release	= vfio_pci_core_release,
> > +	.ioctl		= vfio_pci_core_ioctl,
> > +	.read		= vfio_pci_core_read,
> > +	.write		= vfio_pci_core_write,
> > +	.mmap		= vfio_pci_core_mmap,
> > +	.request	= vfio_pci_core_request,
> > +	.match		= vfio_pci_core_match,
> > +	.reflck_attach	= vfio_pci_core_reflck_attach,
> 
> I don't remember what was proposed in vfio-pci-core conversion patches,
> but would expect that default behaviour is to fallback to vfio_pci_core_* API
> if ".release/.ioctl/e.t.c" are not redefined.

Yes, that would be nice, but don't think it does that in latest(v4).

Hi Max,
Could we please consider fall back to the core defaults, may be check and assign defaults
in vfio_pci_core_register_device() ?

Thanks,
Shameer

  reply	other threads:[~2021-07-05  8:47 UTC|newest]

Thread overview: 20+ 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 [this message]
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

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