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Date:   Mon, 31 Jan 2022 16:40:32 +0100
From:   =?iso-8859-1?Q?J=F6rg_R=F6del?= <joro@8bytes.org>
To:     Paul Menzel <pmenzel@molgen.mpg.de>
Cc:     Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
        Christoph Hellwig <hch@infradead.org>,
        Sagi Grimberg <sagi@grimberg.me>,
        linux-nvme@lists.infradead.org, iommu@lists.linux-foundation.org,
        LKML <linux-kernel@vger.kernel.org>,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: Re: nvme: IO_PAGE_FAULT logged with Intel SSDPEKKF512G8
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References: <366b1545-fdea-3423-10a7-308ca2bef746@molgen.mpg.de>
 <20220118165325.GA3301052@dhcp-10-100-145-180.wdc.com>
 <fd1c1767-0029-58d2-3878-5bc1a85b8e2c@molgen.mpg.de>
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On Tue, Jan 18, 2022 at 06:01:06PM +0100, Paul Menzel wrote:
> > >      $ dmesg --level=err
> > >      [    4.194306] nvme 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000c address=0xffffc080 flags=0x0050]
> > >      [    4.206970] nvme 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000c address=0xffffc000 flags=0x0050]

This was caused by a DMA read to a write-only page. Looks like a bug in
the driver or the devices firmware.

Regards,

	Joerg