From: Dan Williams <dan.j.williams@intel.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Tejun Heo <tj@kernel.org>, Keith Busch <keith.busch@intel.com>,
IDE/ATA development list <linux-ide@vger.kernel.org>,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH 0/5] ahci: nvme remap support
Date: Fri, 18 Nov 2016 22:12:00 -0800 [thread overview]
Message-ID: <CAPcyv4ge6OO+N619t48m_aCNSEX1aEipP18E6_fvurmu5nr40w@mail.gmail.com> (raw)
In-Reply-To: <20161115185207.GB5854@lst.de>
On Tue, Nov 15, 2016 at 10:52 AM, Christoph Hellwig <hch@lst.de> wrote:
> As it's been a few weeks since this initial posting: What's the
> status of either getting the magic chipset handshake mode published
> to take the chipset out of this degraded mode, or implementing a bridge
> driver like VMD?
The setting is done via write-once registers (once per reset), so
there is no mechanism for an OS to undo it.
> It seems devices supporting this "slow down the devices and make life
> hell for the OS" mode are getting more common, so we'll have to do
> something about it.
To my knowledge all platforms that ship this configuration now already
ship a BIOS, or have an updated BIOS available, that allows the
platform to be placed into AHCI mode.
Setting the controller to AHCI mode is the best option for running
Linux on these systems.
prev parent reply other threads:[~2016-11-19 6:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-22 0:25 [PATCH 0/5] ahci: nvme remap support Dan Williams
2016-10-22 0:25 ` [PATCH 1/5] " Dan Williams
2016-10-22 0:25 ` [PATCH 2/5] nvme: rename "pci" operations to "mmio" Dan Williams
2016-10-22 0:25 ` [PATCH 3/5] nvme: introduce nvme_dev_ops Dan Williams
2016-10-22 0:25 ` [PATCH 4/5] nvme: move common definitions to pci.h Dan Williams
2016-10-22 0:25 ` [PATCH 5/5] nvme: ahci remap support Dan Williams
2016-10-22 6:50 ` [PATCH 0/5] ahci: nvme " Christoph Hellwig
2016-10-22 19:26 ` Dan Williams
2016-10-23 8:34 ` Christoph Hellwig
2016-10-23 13:57 ` Dan Williams
2016-10-24 12:49 ` Christoph Hellwig
2016-10-24 14:46 ` Keith Busch
2016-10-24 15:16 ` Christoph Hellwig
2016-10-24 17:46 ` Dan Williams
2016-10-24 17:55 ` Christoph Hellwig
2016-10-24 21:01 ` Dan Williams
2016-10-24 17:57 ` Dan Williams
2016-10-24 18:21 ` Christoph Hellwig
2016-11-15 18:52 ` Christoph Hellwig
2016-11-19 6:12 ` Dan Williams [this message]
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