linux-kernel - Re: [PATCH] arch/i386/pci/mmconfig.c tlb flush fix

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Message-ID: <p73y7s6kebe.fsf@verdi.suse.de>
Date:	26 Sep 2006 14:22:29 +0200
From:	Andi Kleen <ak@...e.de>
To:	OGAWA Hirofumi <hogawa@...aclelinux.com>
Cc:	linux-kernel@...r.kernel.org,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Subject: Re: [PATCH] arch/i386/pci/mmconfig.c tlb flush fix

OGAWA Hirofumi <hogawa@...aclelinux.com> writes:

> Hi,
> 
> We use the fixmap for accessing pci config space in pci_mmcfg_read/write().
> The problem is in pci_exp_set_dev_base(). It is caching a last
> accessed address to avoid calling set_fixmap_nocache() whenever
> pci_mmcfg_read/write() is used.


Good catch. I already had another report of mmconfig corruption on i386,
but didn't have time to look at it yet.

Will be definitely stable material once it hit mainline.

-Andi
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