From: Arjan van de Ven <arjan@linux.intel.com>
To: "Thomas Hellström" <thomas@tungstengraphics.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>,
Andi Kleen <andi@firstfloor.org>,
Dave Airlie <airlied@redhat.com>,
linux-kernel@vger.kernel.org, tglx@linutronix.de,
mingo@redhat.com
Subject: Re: [PATCH] x86: create array based interface to change page attribute
Date: Mon, 07 Apr 2008 13:57:24 -0700 [thread overview]
Message-ID: <47FA8AB4.7060605@linux.intel.com> (raw)
In-Reply-To: <47FA8826.2060802@tungstengraphics.com>
Thomas Hellström wrote:
> Ouch, so we'll be needing an ioremap_wc(), I guess. We probably
> shouldn't use the linear kernel map for this anyway, since that would
> require a chipset flush for each ring commit. We can actually use
> vmap() with a wc page protection for that, but an ioremap_wc() would
> certainly save us a lot of trouble.
please don't use vmap() as a hack for mapping IO memory when you should use ioremap_wc()....
Lets get this thing right rather than finding whichever hack of the day
happens to work with the implementation from yesterday.
next prev parent reply other threads:[~2008-04-07 21:00 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-31 5:19 [PATCH] x86: create array based interface to change page attribute Dave Airlie
2008-03-31 6:54 ` Thomas Hellström
2008-03-31 9:33 ` Arjan van de Ven
2008-03-31 11:04 ` Thomas Hellström
2008-03-31 7:25 ` Andi Kleen
2008-03-31 7:55 ` Thomas Hellström
2008-03-31 8:38 ` Andi Kleen
2008-03-31 9:06 ` Thomas Hellström
2008-03-31 9:18 ` Andi Kleen
2008-03-31 11:10 ` Thomas Hellström
2008-03-31 16:08 ` Arjan van de Ven
2008-03-31 16:41 ` Thomas Hellström
2008-03-31 16:49 ` Arjan van de Ven
2008-03-31 17:26 ` Thomas Hellström
2008-04-01 20:58 ` Arjan van de Ven
2008-04-01 21:29 ` Thomas Hellström
2008-04-01 22:30 ` Arjan van de Ven
2008-04-02 6:30 ` Thomas Hellström
2008-04-02 6:35 ` Arjan van de Ven
2008-04-02 6:59 ` Thomas Hellström
2008-04-02 14:01 ` Arjan van de Ven
2008-04-02 17:57 ` Thomas Hellström
2008-04-07 18:23 ` Jesse Barnes
2008-04-07 19:51 ` Thomas Hellström
2008-04-07 19:59 ` Jesse Barnes
2008-04-07 20:46 ` Thomas Hellström
2008-04-07 20:57 ` Arjan van de Ven [this message]
2008-04-08 6:12 ` Thomas Hellström
2008-04-07 21:04 ` Jesse Barnes
2008-04-08 6:21 ` Thomas Hellström
2008-04-08 14:27 ` Jesse Barnes
2008-04-07 20:56 ` Arjan van de Ven
2008-04-07 21:02 ` Jesse Barnes
2008-04-07 21:09 ` Jesse Barnes
2008-03-31 9:56 ` Arjan van de Ven
2008-03-31 11:21 ` Dave Airlie
2008-03-31 11:46 ` Andi Kleen
2008-04-02 1:35 ` Dave Airlie
2008-04-01 18:20 ` Arjan van de Ven
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