From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Chris Wright <chrisw@sous-sol.org>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Don Dutile <ddutile@redhat.com>
Subject: Re: [PATCH resend] pci: ARI is a PCIe v2 feature
Date: Fri, 22 Jul 2011 08:44:08 -0700 [thread overview]
Message-ID: <20110722084408.7be2e9bc@jbarnes-desktop> (raw)
In-Reply-To: <20110713171433.GU15844@sequoia.sous-sol.org>
On Wed, 13 Jul 2011 10:14:33 -0700
Chris Wright <chrisw@sous-sol.org> wrote:
> The function pci_enable_ari() may mistakenly set the downstream port
> of a v1 PCIe switch in ARI Forwarding mode. This is a PCIe v2 feature,
> and with an SR-IOV device on that switch port believing the switch above
> is ARI capable it may attempt to use functions 8-255, translating into
> invalid (non-zero) device numbers for that bus. This has been seen
> to cause Completion Timeouts and general misbehaviour including hangs
> and panics.
Applied, thanks.
--
Jesse Barnes, Intel Open Source Technology Center
prev parent reply other threads:[~2011-07-22 15:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-13 17:14 [PATCH resend] pci: ARI is a PCIe v2 feature Chris Wright
2011-07-14 7:35 ` Jesse Barnes
2011-07-14 8:16 ` Chris Wright
2011-07-22 15:44 ` Jesse Barnes [this message]
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