linux-kernel - Re: [PATCH v4 00/17] Add VFIO mediated device support and DEV-MSI support for the idxd driver

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Message-ID: <20201102171909.GF2620339@nvidia.com>
Date:   Mon, 2 Nov 2020 13:19:09 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     "Raj, Ashok" <ashok.raj@...el.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Dave Jiang <dave.jiang@...el.com>, <vkoul@...nel.org>,
        <megha.dey@...el.com>, <maz@...nel.org>, <bhelgaas@...gle.com>,
        <alex.williamson@...hat.com>, <jacob.jun.pan@...el.com>,
        <yi.l.liu@...el.com>, <baolu.lu@...el.com>, <kevin.tian@...el.com>,
        <sanjay.k.kumar@...el.com>, <tony.luck@...el.com>,
        <jing.lin@...el.com>, <dan.j.williams@...el.com>,
        <kwankhede@...dia.com>, <eric.auger@...hat.com>,
        <parav@...lanox.com>, <rafael@...nel.org>, <netanelg@...lanox.com>,
        <shahafs@...lanox.com>, <yan.y.zhao@...ux.intel.com>,
        <pbonzini@...hat.com>, <samuel.ortiz@...el.com>,
        <mona.hossain@...el.com>, Megha Dey <megha.dey@...ux.intel.com>,
        <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <kvm@...r.kernel.org>
Subject: Re: [PATCH v4 00/17] Add VFIO mediated device support and DEV-MSI
 support for the idxd driver

On Mon, Nov 02, 2020 at 08:20:43AM -0800, Raj, Ashok wrote:
> Creating these private interfaces for intra-module are just 1-1 and not
> general purpose and every accelerator needs to create these instances.

This is where we are going, auxillary bus should be merged soon which
is specifically to connect these kinds of devices across subsystems

Jason