From: keith.busch@intel.com (Keith Busch)
Subject: [PATCH V2] nvme-pci: assign separate irq vectors for adminq and ioq0
Date: Thu, 1 Mar 2018 09:10:42 -0700 [thread overview]
Message-ID: <20180301161042.GA14799@localhost.localdomain> (raw)
In-Reply-To: <20180301150329.GB6795@ming.t460p>
On Thu, Mar 01, 2018@11:03:30PM +0800, Ming Lei wrote:
> If all CPUs for the 1st IRQ vector of admin queue are offline, then I
> guess NVMe can't work any more.
Yikes, with respect to admin commands, it appears you're right if your
system allows offlining CPU0.
> So looks it is a good idea to make admin queue's IRQ vector assigned as
> non-managed IRQs.
It'd still be considered managed even if it's a 'pre_vector', though
it would get the default mask with all possible CPUs.
next prev parent reply other threads:[~2018-03-01 16:10 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-28 15:48 [PATCH V2] nvme-pci: assign separate irq vectors for adminq and ioq0 Jianchao Wang
2018-02-28 15:59 ` Andy Shevchenko
2018-03-02 3:06 ` jianchao.wang
2018-03-12 18:59 ` Keith Busch
2018-03-13 1:47 ` jianchao.wang
2018-02-28 16:47 ` Christoph Hellwig
2018-03-01 9:28 ` Sagi Grimberg
2018-03-01 10:05 ` jianchao.wang
2018-03-01 15:15 ` Keith Busch
2018-03-02 3:11 ` jianchao.wang
2018-03-01 15:03 ` Ming Lei
2018-03-01 16:10 ` Keith Busch [this message]
2018-03-08 7:42 ` Christoph Hellwig
2018-03-09 17:24 ` Keith Busch
2018-03-12 9:09 ` Ming Lei
[not found] ` <CAF6hzxwN4S4C37dbdARcW+tgLMRjvHtzOZjFomVQBVntshZ+7w@mail.gmail.com>
2018-10-08 5:59 ` nvme-pci: number of queues off by one Dongli Zhang
2018-10-08 6:58 ` Dongli Zhang
2018-10-08 14:54 ` Keith Busch
2018-10-08 10:19 ` Ming Lei
2018-03-02 3:18 ` [PATCH V2] nvme-pci: assign separate irq vectors for adminq and ioq0 jianchao.wang
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