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From: Will Deacon <will@kernel.org>
To: John Garry <john.garry@huawei.com>
Cc: sagi@grimberg.me, linux-nvme@lists.infradead.org,
	Alexey Dobriyan <adobriyan@gmail.com>,
	axboe@fb.com, Keith Busch <kbusch@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] nvme-pci: slimmer CQ head update
Date: Wed, 6 May 2020 17:31:04 +0100	[thread overview]
Message-ID: <20200506163104.GD12919@willie-the-truck> (raw)
In-Reply-To: <4155a814-798c-0c7e-5433-daf719c0345c@huawei.com>

On Wed, May 06, 2020 at 05:26:35PM +0100, John Garry wrote:
> + arm64 guys (Please note WARN below, generated when testing NVMe)
> 
> On 06/05/2020 15:35, Christoph Hellwig wrote:> On Wed, May 06, 2020 at
> 02:44:50PM +0100, John Garry wrote:
> > > I'd rather hear the maintainer’s opinion before bothering testing this...
> > 
> > As the other maintainer - please give it a spin.
> 
> ok, so I have tested with the modification from Keith (to avoid the
> READ_ONCE()), and it's ok for use_threaded_interrupts=1.
> 
> However, for use_threaded_interrupts=0, I see a new issue:
> 
> [  122.524290] WARNING: CPU: 86 PID: 1157 at
> drivers/iommu/io-pgtable-arm.c:304

That means you're trying to map something that is already mapped.

Will

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  reply	other threads:[~2020-05-06 16:31 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-28 18:45 [PATCH] nvme-pci: slimmer CQ head update Alexey Dobriyan
2020-02-29  5:53 ` Keith Busch
2020-05-06 11:03   ` John Garry
2020-05-06 12:47     ` Keith Busch
2020-05-06 13:24       ` Alexey Dobriyan
2020-05-06 13:44         ` John Garry
2020-05-06 14:01           ` Alexey Dobriyan
2020-05-06 14:35           ` Christoph Hellwig
2020-05-06 16:26             ` John Garry
2020-05-06 16:31               ` Will Deacon [this message]
2020-05-06 16:52                 ` Robin Murphy
2020-05-06 17:02                   ` John Garry
2020-05-07  8:18                     ` John Garry
2020-05-07 11:04                       ` Robin Murphy
2020-05-07 13:55                         ` John Garry
2020-05-07 14:23                           ` Keith Busch
2020-05-07 15:11                             ` John Garry
2020-05-07 15:35                               ` Keith Busch
2020-05-07 15:41                                 ` John Garry
2020-05-08 16:16                                   ` Keith Busch
2020-05-08 17:04                                     ` John Garry
2020-05-07 16:26                                 ` Robin Murphy
2020-05-07 17:35                                   ` Keith Busch
2020-05-07 17:44                                     ` Will Deacon
2020-05-07 18:06                                       ` Keith Busch
2020-05-08 11:40                                         ` Will Deacon
2020-05-08 14:07                                           ` Keith Busch
2020-05-08 15:34                                             ` Keith Busch
2020-05-06 14:44         ` Keith Busch
2020-05-07 15:58           ` Keith Busch
2020-05-07 20:07             ` [PATCH] nvme-pci: fix "slimmer CQ head update" Alexey Dobriyan

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