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Date:   Fri, 28 Jun 2019 09:23:10 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Daniel Drake <drake@endlessm.com>
Cc:     Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
        Keith Busch <kbusch@kernel.org>,
        Sagi Grimberg <sagi@grimberg.me>,
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        Bjorn Helgaas <bhelgaas@google.com>, linux-ide@vger.kernel.org,
        Linux Upstreaming Team <linux@endlessm.com>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Hannes Reinecke <hare@suse.de>,
        Alex Williamson <alex.williamson@redhat.com>,
        Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH v2 2/5] nvme: rename "pci" operations to "mmio"
Message-ID: <20190628072310.GA28896@lst.de>
References: <20190620051333.2235-1-drake@endlessm.com> <20190620051333.2235-3-drake@endlessm.com> <20190620061038.GA20564@lst.de> <CAD8Lp45ua=L+ixO+du=Njhy+dxjWobWA+V1i+Y2p6faeyt1FBQ@mail.gmail.com> <20190624061617.GA2848@lst.de> <CAD8Lp464B0dOd+ayF_AK4DRzHEpiaSbUOXjVJ5bq5zMXq=BBKQ@mail.gmail.com>
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On Tue, Jun 25, 2019 at 11:51:28AM +0800, Daniel Drake wrote:
> Bearing in mind that we've already been told that the NVMe device
> config space is inaccessible, and the new docs show exactly how the
> BIOS enforces such inaccessibility during early boot, the remaining
> points you mentioned recently were:

If we can't access the config space we unfortunately can't support
this scheme at all, as it invalidates all our quirks handling.