From: Chris Wright <chrisw-69jw2NvuJkxg9hUCZPvPmw@public.gmane.org>
To: "Paweł Żak" <pawel.zaq-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org,
linux-ide-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [Bug 42679] New: DMA Read on Marvell 88SE9128 fails when Intel's IOMMU is on
Date: Mon, 30 Jan 2012 15:32:11 -0800 [thread overview]
Message-ID: <20120130233211.GM24091@sequoia.sous-sol.org> (raw)
In-Reply-To: <op.v8w3z0z0c3q55a@localhost>
* Paweł Żak (pawel.zaq@gmail.com) wrote:
> On Mon, 30 Jan 2012 22:41:32 +0100, Don Dutile <ddutile@redhat.com> wrote:
> >Well, the lspci dump in the bugzilla report doesn't show a device
> >w/BDF=0b:00.1;
> >so, if the SATA device (which is 0b:00.0) is spitting out 0b:00.1
> >as the source
> >of any of its DMA packets, the IOMMU will fault on it, since
> >0b:00.1 didn't
> >request DMA mappings (0b:00.0 did).
> >I semi-recall someone else reporting this 'feature' on this list.
> >Wonder if pci-quirk has to filter this case (0b:00.0 on this system means
> >map for 0b:00.0 & 0b:00.1 -- ick!)
> >
> >do another lspci -vvv to ensure that 0b:00.1 wasn't excluded in the list.
> >if it doesn't exist, then the problem is the SATA device using an
> >unknown/unrecognized
> >BDF of 0b:00.1
>
> Yep, that's correct. I enabled all integrated peripherals on my
> motherboard and there were still no entries with BDF 0b:00.1 in
> lspci -vvv output. Should I take this problem to MSI then?
Yeah, something is not right. Is there any BIOS control over that
device?
thanks,
-chris
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next prev parent reply other threads:[~2012-01-30 23:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-42679-27@https.bugzilla.kernel.org/>
[not found] ` <bug-42679-27-3bo0kxnWaOQUvHkbgXJLS5sdmw4N0Rt+2LY78lusg7I@public.gmane.org/>
2012-01-30 20:59 ` [Bug 42679] New: DMA Read on Marvell 88SE9128 fails when Intel's IOMMU is on Andrew Morton
[not found] ` <20120130125934.7971c815.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2012-01-30 21:41 ` Don Dutile
2012-01-30 22:13 ` Paweł Żak
2012-01-30 23:32 ` Chris Wright [this message]
2012-01-30 23:44 ` Paweł Żak
2012-05-11 9:18 ` Andrew Cooks
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