From: Jes Sorensen <jes@wildopensource.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Bill Davidsen <davidsen@tmr.com>,
David Mosberger-Tang <David.Mosberger@acm.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Intel x86-64 support merge
Date: 20 Feb 2004 02:48:06 -0500 [thread overview]
Message-ID: <yq0vfm2ry2x.fsf@wildopensource.com> (raw)
In-Reply-To: <40358AC5.90103@pobox.com>
>>>>> "Jeff" == Jeff Garzik <jgarzik@pobox.com> writes:
Jeff> Bill Davidsen wrote:
>> Doesn't need it? Does that mean the Win64 uses bounce buffers for
>> everything? Or am I totally misreading this?
Jeff> Well, for 32-bit PCI hardware on a 64-bit OS, you pretty much
Jeff> have to bounce, without an IOMMU.
Jeff> I doubt Win64 bounces for 64-bit PCI hardware, but who knows...
Just a shame they don't seem to care about performance and allowing
one to issue SAC cycles when possible. Oh well, guess one just has to
buy a real computer.
Cheers,
Jes
next prev parent reply other threads:[~2004-02-20 7:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1qK5k-7g2-67@gated-at.bofh.it>
[not found] ` <1qK5k-7g2-69@gated-at.bofh.it>
[not found] ` <1qK5k-7g2-71@gated-at.bofh.it>
[not found] ` <1qK5k-7g2-73@gated-at.bofh.it>
[not found] ` <1qK5k-7g2-65@gated-at.bofh.it>
2004-02-19 22:06 ` [PATCH] Intel x86-64 support merge Bill Davidsen
2004-02-20 4:03 ` David Mosberger-Tang
2004-02-20 4:19 ` Jeff Garzik
2004-02-20 7:48 ` Jes Sorensen [this message]
2004-02-21 2:07 ` David Mosberger
[not found] <1qHr5-2tJ-39@gated-at.bofh.it>
[not found] ` <1qHr5-2tJ-37@gated-at.bofh.it>
[not found] ` <1qIZw-6b9-17@gated-at.bofh.it>
[not found] ` <1qJsI-6Be-57@gated-at.bofh.it>
2004-02-19 0:05 ` David Mosberger-Tang
2004-02-19 9:36 ` David Weinehall
[not found] <200402182006.i1IK6CsS022562@hera.kernel.org>
2004-02-18 21:21 ` Arjan van de Ven
2004-02-18 22:57 ` H. Peter Anvin
2004-02-18 23:16 ` Arjan van de Ven
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