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From:   "Gupta, Nipun" <Nipun.Gupta@amd.com>
To:     Jason Gunthorpe <jgg@nvidia.com>
CC:     "robh+dt@kernel.org" <robh+dt@kernel.org>,
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        "masahiroy@kernel.org" <masahiroy@kernel.org>,
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        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-kbuild@vger.kernel.org" <linux-kbuild@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "okaya@kernel.org" <okaya@kernel.org>,
        "Anand, Harpreet" <harpreet.anand@amd.com>,
        "Agarwal, Nikhil" <nikhil.agarwal@amd.com>,
        "Simek, Michal" <michal.simek@amd.com>,
        "Radovanovic, Aleksandar" <aleksandar.radovanovic@amd.com>,
        "git (AMD-Xilinx)" <git@amd.com>
Subject: RE: [RFC PATCH v3 6/7] vfio/cdx: add support for CDX bus
Thread-Topic: [RFC PATCH v3 6/7] vfio/cdx: add support for CDX bus
Thread-Index: AQHYwfd+6WpLgEu670uI7mK3gsgeSq3SpgMAgAAAlaA=
Date:   Tue, 6 Sep 2022 17:23:39 +0000
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References: <20220803122655.100254-1-nipun.gupta@amd.com>
 <20220906134801.4079497-1-nipun.gupta@amd.com>
 <20220906134801.4079497-7-nipun.gupta@amd.com> <YxeBYiBXMLvIIRAX@nvidia.com>
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[AMD Official Use Only - General]


> -----Original Message-----
> From: Jason Gunthorpe <jgg@nvidia.com>
> Sent: Tuesday, September 6, 2022 10:51 PM
> To: Gupta, Nipun <Nipun.Gupta@amd.com>
> Cc: robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org;
> gregkh@linuxfoundation.org; rafael@kernel.org; eric.auger@redhat.com;
> alex.williamson@redhat.com; cohuck@redhat.com; Gupta, Puneet (DCG-ENG)
> <puneet.gupta@amd.com>; song.bao.hua@hisilicon.com;
> mchehab+huawei@kernel.org; maz@kernel.org; f.fainelli@gmail.com;
> jeffrey.l.hugo@gmail.com; saravanak@google.com; Michael.Srba@seznam.cz;
> mani@kernel.org; yishaih@nvidia.com; robin.murphy@arm.com;
> will@kernel.org; joro@8bytes.org; masahiroy@kernel.org;
> ndesaulniers@google.com; linux-arm-kernel@lists.infradead.org; linux-
> kbuild@vger.kernel.org; linux-kernel@vger.kernel.org;
> devicetree@vger.kernel.org; kvm@vger.kernel.org; okaya@kernel.org; Anand,
> Harpreet <harpreet.anand@amd.com>; Agarwal, Nikhil
> <nikhil.agarwal@amd.com>; Simek, Michal <michal.simek@amd.com>;
> Radovanovic, Aleksandar <aleksandar.radovanovic@amd.com>; git (AMD-Xilinx=
)
> <git@amd.com>
> Subject: Re: [RFC PATCH v3 6/7] vfio/cdx: add support for CDX bus
>=20
> [CAUTION: External Email]
>=20
> On Tue, Sep 06, 2022 at 07:18:00PM +0530, Nipun Gupta wrote:
> > vfio-cdx driver enables IOCTLs for user space to query
> > MMIO regions for CDX devices and mmap them. This change
> > also adds support for reset of CDX devices.
> >
> > This change adds the VFIO CDX driver and enables the following
> > ioctls for CDX devices:
> >  - VFIO_DEVICE_GET_INFO:
> >  - VFIO_DEVICE_GET_REGION_INFO
> >  - VFIO_DEVICE_RESET
>=20
> For non-RFC posting please post VFIO separately after getting the base
> bus merged.

Agree, with non-RFC changes we will get bus merged first and then
have the vfio patches as a separate set.

Thanks,
Nipun

>=20
> I think you will need to get some work done to consolidate some of
> this duplicated code that was cut & pasted here..
>=20
> Jason