From: Arjan van de Ven <arjan@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Shaohua Li <shaohua.li@intel.com>,
lkml <linux-kernel@vger.kernel.org>,
airlied@linux.ie, Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
Suresh Siddha <suresh.b.siddha@intel.com>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [patch 2/2] reduce tlb/cache flush times of agpgart memory allocation
Date: Fri, 15 Aug 2008 07:40:33 -0700 [thread overview]
Message-ID: <20080815074033.4817f876@infradead.org> (raw)
In-Reply-To: <20080815143131.GF12954@elte.hu>
On Fri, 15 Aug 2008 16:31:31 +0200
Ingo Molnar <mingo@elte.hu> wrote:
>
> * Shaohua Li <shaohua.li@intel.com> wrote:
>
> > To reduce tlb/cache flush, makes agp memory allocation do one flush
> > after all pages in a region are changed to uc.
> >
> > All agp drivers except agp-sgi uses agp_generic_alloc_page() for
> > .agp_alloc_page, so the patch should work for them. agp-sgi is only
> > for ia64, so not a problem too.
>
> applied to tip/x86/pat - thanks!
>
> I've Cc:-ed more PAT folks - any objections?
>
it really needs something else instead; it needs airlied's array
allocator
otherwise you hit the second wall as well (the pat checks per page)
in reality an array version of ioremap (or set_pages_X) is what is
needed
next prev parent reply other threads:[~2008-08-15 14:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 6:51 [patch 2/2] reduce tlb/cache flush times of agpgart memory allocation Shaohua Li
2008-08-15 14:31 ` Ingo Molnar
2008-08-15 14:40 ` Arjan van de Ven [this message]
2008-08-15 14:43 ` Ingo Molnar
2008-08-18 1:21 ` Li, Shaohua
2008-08-18 3:56 ` Arjan van de Ven
2008-08-18 6:19 ` Li, Shaohua
2008-08-18 8:03 ` Ingo Molnar
2008-08-18 17:18 ` H. Peter Anvin
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