linux-kernel - Re: [REGRESSION] e1000e failure triggered by "PCI: Remove MRRS modification from MPS setting code"

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Message-ID: <CAPoiz9w4LyTkmAACHQYR5GSJ+TmN7ePJSb-UuRQ7EjY=QYVn5Q@mail.gmail.com>
Date:	Tue, 27 Sep 2011 12:59:50 -0500
From:	Jon Mason <mason@...i.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Sven Schnelle <svens@...ckframe.org>, Simon Kirby <sim@...tway.ca>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Niels Ole Salscheider <niels_ole@...scheider-online.de>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [REGRESSION] e1000e failure triggered by "PCI: Remove MRRS
 modification from MPS setting code"

On Tue, Sep 27, 2011 at 12:01 PM, Avi Kivity <avi@...hat.com> wrote:
> Commit ed2888e906b567 (merged 3.1-rc6) causes a reproducible failure with my
> e1000e card here.  Starting a kvm guest (which mostly consists of shoving
> display updates over X over ssh, as far as the network is concerned) locks
> up the card hard.
>
> The failure is easily reproducible, will gladly test patches.

Does the problem occur with the adapter assigned to the kvm guest or
the host?  I assume that you are running with the default behavior and
not with the boot arg "pci=pcie_bus_perf".  Can you get the dmesg
output (specifically the lines that have "Dev MPS") and lspci -vvv on
the host?  Is this an e1000e 4port adapter?

Thanks,
Jon

>
> --
> error compiling committee.c: too many arguments to function
>
> --
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