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From: Bjorn Helgaas <helgaas@kernel.org>
To: Keith Busch <keith.busch@gmail.com>
Cc: Daniel Drake <drake@endlessm.com>, Jens Axboe <axboe@kernel.dk>,
	Sagi Grimberg <sagi@grimberg.me>,
	Linux PCI <linux-pci@vger.kernel.org>,
	linux-nvme <linux-nvme@lists.infradead.org>,
	Keith Busch <kbusch@kernel.org>,
	linux-ide@vger.kernel.org,
	Linux Upstreaming Team <linux@endlessm.com>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] PCI: Add Intel remapped NVMe device support
Date: Fri, 14 Jun 2019 15:05:57 -0500
Message-ID: <20190614200557.GS13533@google.com> (raw)
In-Reply-To: <CAOSXXT4Ba_6xRUyaQBxpq+zdG9_itXDhFJ5EFZPv3CQuJZKHzg@mail.gmail.com>

On Fri, Jun 14, 2019 at 01:36:07PM -0600, Keith Busch wrote:

> Even if you wish to forgo the standard features and management
> capabilities, you're still having to deal with legacy IRQ, which has
> IOPs at a fraction of the hardware's true capabilities when using MSI.

> ... your best option is still to set to AHCI mode for Linux
> for this reason alone, and vendors should be providing this option in
> BIOS.

Ugh.  Are you saying the installation instructions for Linux will say
"change the BIOS setting to AHCI"?  That's an unpleasant user
experience, especially if the installation fails if the user hasn't
read the instructions.

Bjorn

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-10  7:44 Daniel Drake
2019-06-10 16:00 ` Keith Busch
2019-06-11  2:46   ` Daniel Drake
2019-06-12 14:32     ` Keith Busch
2019-06-13  8:54       ` Christoph Hellwig
2019-06-14  2:26         ` Daniel Drake
2019-06-14 19:36           ` Keith Busch
2019-06-14 20:05             ` Bjorn Helgaas [this message]
2019-06-14 21:05               ` Keith Busch
2019-06-18  7:48                 ` Hannes Reinecke
2019-06-18  7:46           ` Hannes Reinecke
2019-06-18  8:06             ` Daniel Drake
2019-06-18 15:15               ` Hannes Reinecke
2019-06-19 13:52                 ` Bjorn Helgaas
2019-06-10 21:16 ` Bjorn Helgaas
2019-06-11  3:25   ` Daniel Drake
2019-06-11 19:52     ` Bjorn Helgaas
2019-06-12  3:16       ` Daniel Drake
2019-06-12 13:49         ` Bjorn Helgaas

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