linux-kernel - Re: [Bug 10328] New: [regression] performance drop for glx

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Message-Id: <1209210237.4583.4.camel@zwerg>
Date:	Sat, 26 Apr 2008 13:43:57 +0200
From:	Alexey Fisher <bug-track@...her-privat.net>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>, venkatesh.pallipadi@...el.com,
	jbarnes@...tuousgeek.org, keithp@...thp.com, airlied@...il.com
Subject: Re: [Bug 10328] New: [regression] performance drop for glx

Am Freitag, den 25.04.2008, 17:07 -0700 schrieb Suresh Siddha:
> On Fri, Apr 25, 2008 at 07:35:23AM +0200, Alexey Fisher wrote:
> > > >> On Tue, 25 Mar 2008 15:11:15 -0700 (PDT)
> > > >> bugme-daemon@...zilla.kernel.org wrote:
> > > >>
> > > >>> http://bugzilla.kernel.org/show_bug.cgi?id=10328
> > > >>>
> > > >>>            Summary: [regression] performance drop for glx
> > > > 
> > > > Alexey, Can you please try the appended patch?
> > > > 
> > > > Andrew, can you please push the appended patch for 2.6.25? Thanks.
> > > > ---
> > > > 
> > 
> > 
> > This issue come again with commit:
> > 
> > commit 2e5d9c857d4e6c9e7b7d8c8c86a68a7842d213d6
> > Author: venkatesh.pallipadi@...el.com <venkatesh.pallipadi@...el.com>
> > Date:   Tue Mar 18 17:00:14 2008 -0700
> > 
> >     x86: PAT infrastructure patch
> > 
> >     Sets up pat_init() infrastructure.
> > 
> 
> Alexey, Sorry. I missed posting a fix in the post PAT series for this issue. Can you
> please try the appended patch and Ack?
> 
> copying X folks get their attention and their Ack on the patch and next steps outlined.
> 
> Thanks.
> ---
> 
> [patch] use UC minus for ioremap(), ioremap_nocache() and pci_mmap_page_range()
> 
> Use UC_MINUS for ioremap(), ioremap_nocache() instead of strong UC.
> Once all the X drivers move to ioremap_wc(), we can go back to strong
> UC semantics for ioremap() and ioremap_nocache().
> 

Thank you. This patch working.

Ack ?

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