From mboxrd@z Thu Jan  1 00:00:00 1970
From: axboe@kernel.dk (Jens Axboe)
Date: Tue, 09 Dec 2014 13:52:37 -0700
Subject: [PATCH] NVMe: Remove remnants of cpu hotplug
In-Reply-To: <80B89753B40C5141A3E2D53FE7A2A8A9945FE6A1@NTXBOIMBX02.micron.com>
References: <54809D53.4060404@micron.com> <5480A071.3080103@kernel.dk>
 <80B89753B40C5141A3E2D53FE7A2A8A9945FE6A1@NTXBOIMBX02.micron.com>
Message-ID: <54876115.5000203@kernel.dk>

On 12/09/2014 01:50 PM, Sam Bradshaw (sbradshaw) wrote:
> 
>> I'm curious with the num_possible -> num_online change. This should be
>> handled by blk-mq, so no worries there. But how did it trigger the
>> unset CPU in the run mask? Ran into the same issue here on a different
>> test case, just curious if you looked into this.
> 
> After looking into it, the issue has been fixed on your for-3.19/core 
> branch due to:
> 
> [PATCH] blk-mq: prevent unmapped hw queue from being scheduled
> 
> It's straightforward enough to test that the fix works by setting 
> possible_cpus on the kernel command line to something larger than 
> online cpus.

Great, that's much preferred :-)

-- 
Jens Axboe