linux-kernel - Re: [PATCH v2] PCI: Always set prefetchable base/limit upper32 registers

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Message-ID: <20091204160158.1b591cb1@jbarnes-piketon>
Date:	Fri, 4 Dec 2009 16:01:58 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Alex Williamson <alex.williamson@...com>
Cc:	yinghai@...nel.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, alex.williamson@...com
Subject: Re: [PATCH v2] PCI: Always set prefetchable base/limit upper32
 registers

On Mon, 30 Nov 2009 14:51:44 -0700
Alex Williamson <alex.williamson@...com> wrote:

> Prior to 1f82de10 we always initialized the upper 32bits of the
> prefetchable memory window, regardless of the address range used.
> Now we only touch it for a >32bit address, which means the upper32
> registers remain whatever the BIOS initialized them too.
> 
> It's valid for the BIOS to set the upper32 base/limit to
> 0xffffffff/0x00000000, which makes us program prefetchable ranges
> like 0xffffffffabc00000 - 0x00000000abc00000
> 
> Revert the chunk of 1f82de10 that made this conditional so we always
> write the upper32 registers and remove now unused pref_mem64 variable.
> 
> Signed-off-by: Alex Williamson <alex.williamson@...com>
> ---
> 

Applied this one, though it looks like your diff had some context that
wasn't in my tree.  Please double check that I fixed it up correctly.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center
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