linux-kernel - Re: [RFC v4 4/8] hisi_acc_vfio_pci: add new vfio

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Message-ID: <20220208143457.GA164934@nvidia.com>
Date:   Tue, 8 Feb 2022 10:34:57 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, alex.williamson@...hat.com,
        cohuck@...hat.com, mgurtovoy@...dia.com, yishaih@...dia.com,
        linuxarm@...wei.com, liulongfang@...wei.com,
        prime.zeng@...ilicon.com, jonathan.cameron@...wei.com,
        wangzhou1@...ilicon.com
Subject: Re: [RFC v4 4/8] hisi_acc_vfio_pci: add new vfio_pci driver for
 HiSilicon ACC devices

On Tue, Feb 08, 2022 at 01:34:21PM +0000, Shameer Kolothum wrote:
> Add a vendor-specific vfio_pci driver for HiSilicon ACC devices.
> This will be extended in subsequent patches to add support for
> VFIO live migration feature.
> 
> Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
>  drivers/vfio/pci/Kconfig             |  9 +++
>  drivers/vfio/pci/Makefile            |  3 +
>  drivers/vfio/pci/hisi_acc_vfio_pci.c | 99 ++++++++++++++++++++++++++++
>  3 files changed, 111 insertions(+)
>  create mode 100644 drivers/vfio/pci/hisi_acc_vfio_pci.c
> 
> diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
> index 187b9c259944..8023b20acf66 100644
> +++ b/drivers/vfio/pci/Kconfig
> @@ -44,6 +44,15 @@ config VFIO_PCI_IGD
>  	  To enable Intel IGD assignment through vfio-pci, say Y.
>  endif
>  
> +config HISI_ACC_VFIO_PCI
> +	tristate "VFIO PCI support for HiSilicon ACC devices"
> +	depends on ARM64 && VFIO_PCI_CORE

You should try very hard to make this driver compatible with
COMPILE_TEST, I think it should not be a problem.

Jason