From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: "Hao, Xudong" <xudong.hao@intel.com>
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"Kay, Allen M" <allen.m.kay@intel.com>,
"Zhang, Xiantao" <xiantao.zhang@intel.com>
Subject: Re: [PATCH] Quirk for IVB graphics FLR errata
Date: Thu, 23 Feb 2012 10:48:23 -0800 [thread overview]
Message-ID: <20120223104823.7bac1916@jbarnes-desktop> (raw)
In-Reply-To: <403610A45A2B5242BD291EDAE8B37D300FCD089A@SHSMSX102.ccr.corp.intel.com>
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On Mon, 20 Feb 2012 02:27:25 +0000
"Hao, Xudong" <xudong.hao@intel.com> wrote:
> For IvyBridge Mobile platform, a system hang may occur if a FLR(Function Level Reset) is asserted to internal graphics.
>
> This quirk patch is workaround for the IVB FLR errata issue.
>
Can you name the magic constants and offsets and document what the FLR
quirk is actually trying to do? IIRC it had something to do with
waiting for the PCH acknowledge for the display portion of the reset...
Thanks,
--
Jesse Barnes, Intel Open Source Technology Center
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prev parent reply other threads:[~2012-02-23 18:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 2:27 [PATCH] Quirk for IVB graphics FLR errata Hao, Xudong
2012-02-23 18:48 ` Jesse Barnes [this message]
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