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From: Jason Gunthorpe <jgg@nvidia.com>
To: Leon Romanovsky <leon@kernel.org>
Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>,
	"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>,
	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 15:32:47 -0300	[thread overview]
Message-ID: <20210705183247.GU4459@nvidia.com> (raw)
In-Reply-To: <YONPGcwjGH+gImDj@unreal>

On Mon, Jul 05, 2021 at 09:27:37PM +0300, Leon Romanovsky wrote:

> > I think, in any case, it would be good to update the Documentation based on
> > which way we end up doing this.
> 
> The request to update Documentation can be seen as an example of
> choosing not-good API decisions. Expectation to see all drivers to
> use same callbacks with same vfio-core function calls sounds strange
> to me.

It is not vfio-core, it is vfio-pci-core. It is similar to how some of
the fops stuff works, eg the generic_file whatever functions everyone
puts in.

It would be improved a bit by making the ops struct mutable and
populating it at runtime like we do in RDMA. Then the PCI ops and
driver ops could be merged together without the repetition.

Probably something that is more interesting if there are more drivers
as it is a fair amount of typing to make.

Jason

  reply	other threads:[~2021-07-05 18:32 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
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 [this message]
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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