[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <747feb2ef93c4c5e97813232904de829@ausx13mps321.AMER.DELL.COM>
Date: Fri, 22 Feb 2019 19:19:10 +0000
From: <Alex_Gagniuc@...lteam.com>
To: <oohall@...il.com>
Cc: <lukas@...ner.de>, <mr.nuke.me@...il.com>, <bhelgaas@...gle.com>,
<Austin.Bolen@...l.com>, <keith.busch@...el.com>,
<Shyam.Iyer@...l.com>, <okaya@...nel.org>,
<linux-pci@...r.kernel.org>, <mika.westerberg@...ux.intel.com>,
<okaya@...eaurora.org>, <poza@...eaurora.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC v2 4/4] PCI: hotplug: Add quirk For Dell nvme pcie
switches
On 2/21/19 8:05 PM, Oliver wrote:
> On Fri, Feb 22, 2019 at 5:38 AM <Alex_Gagniuc@...lteam.com> wrote:
>> On 2/21/19 1:57 AM, Lukas Wunner wrote:
[snip]
>>> If the quirk is x86-specific, please enclose it in "#ifdef CONFIG_X86"
>>> to reduce kernel footprint on other arches.
>>
>> That's a tricky one. If you look at p. 185 of [1], items 9, 11, and 12
>> are standard x16 cards that would fit in any x16 slot. Those cards have
>> the offending switches.
>>
>> On the one hand, you could take the cards and backplane and put them in
>> a non-hax86 system. On the other hand, I don't see why someone would
>> want to do this.
>
> I have a couple of POWER boxes with Dell branded switch cards in them.
> I have no idea why either, but it does happen.
The hardware debouncer, I think, is on the backplane, so you'd really
need both the switch and backplane combo. I've seen other marketing
departments call the switches "NVMe HBA".
Alex
Powered by blists - more mailing lists