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Date:   Mon, 10 Feb 2020 17:58:57 +0100
From:   "hch@lst.de" <hch@lst.de>
To:     "Derrick, Jonathan" <jonathan.derrick@intel.com>
Cc:     "hch@lst.de" <hch@lst.de>,
        "mr.nuke.me@gmail.com" <mr.nuke.me@gmail.com>,
        "Shevchenko, Andriy" <andriy.shevchenko@intel.com>,
        "lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "mika.westerberg@linux.intel.com" <mika.westerberg@linux.intel.com>,
        "helgaas@kernel.org" <helgaas@kernel.org>,
        "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
        "Baldysiak, Pawel" <pawel.baldysiak@intel.com>,
        "okaya@kernel.org" <okaya@kernel.org>,
        "kbusch@kernel.org" <kbusch@kernel.org>
Subject: Re: [RFC 0/9] PCIe Hotplug Slot Emulation driver
Message-ID: <20200210165857.GA19419@lst.de>
References: <1581120007-5280-1-git-send-email-jonathan.derrick@intel.com> <20200210070115.GA7748@lst.de> <3a4de58ad83a88f90f372e162c39d09eeebd8043.camel@intel.com>
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On Mon, Feb 10, 2020 at 03:05:47PM +0000, Derrick, Jonathan wrote:
> > The code seems like one giant hack to me.  What is the real life
> > use case for this?  Another Intel chipset fuckup like vmd or the ahci
> > remapping?
> > 
> Exactly as the cover letter describes. An interposer being used on a
> non-hotplug slot.

That isn't a use a case, that iѕ a description of the implementation.
Why would you want this code?