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From: Alan Cox <alan@redhat.com>
To: becker@scyld.com (Donald Becker)
Cc: ionut@cs.columbia.edu (Ion Badulescu),
	jgarzik@mandrakesoft.com (Jeff Garzik),
	alan@redhat.com (Alan Cox),
	linux-kernel@vger.kernel.org, jes@linuxcare.com
Subject: Re: [PATCH] starfire reads irq before pci_enable_device.
Date: Fri, 9 Feb 2001 05:49:45 -0500 (EST)	[thread overview]
Message-ID: <200102091049.f19Anjk06651@devserv.devel.redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.10.10102081924330.7141-100000@vaio.greennet> from "Donald Becker" at Feb 08, 2001 07:44:24 PM

> It's amusing that a full receive copy is added without any concern, in
> the same discussion where zero-copy transmit is treated as a holy grail!

For non routing paths its virtually free because the DMA forced the lines
from cache anyway. Basically its a deficiency in the chipset. We don't support
chipsets with alignment rules well on cpus with alignment rules that clash

That shouldnt be a suprise

-
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  parent reply	other threads:[~2001-02-09 10:51 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-02-07 19:52 [PATCH] starfire reads irq before pci_enable_device davej
2001-02-07 19:57 ` Jeff Garzik
2001-02-07 20:34   ` Manfred Spraul
2001-02-08  4:00     ` Jeff Garzik
2001-02-08  1:52   ` Ion Badulescu
2001-02-08 20:28     ` Jeff Garzik
2001-02-08 21:18       ` Ion Badulescu
2001-02-08 21:38         ` Jeff Garzik
2001-02-08 22:05           ` Ion Badulescu
2001-02-09 19:08             ` Jeff Garzik
2001-02-09 20:07               ` Ion Badulescu
2001-02-09 20:11                 ` Jeff Garzik
2001-02-09 20:21                   ` Ion Badulescu
2001-02-09 20:26                     ` Jeff Garzik
2001-02-08 21:43         ` Manfred Spraul
2001-02-08 21:46           ` Ion Badulescu
2001-02-09 21:43           ` Jes Sorensen
2001-02-09 21:52             ` Ion Badulescu
2001-02-12 18:54               ` Jes Sorensen
2001-02-14  1:35                 ` Ion Badulescu
2001-02-10 14:48             ` Manfred Spraul
2001-02-08 21:26       ` Donald Becker
2001-02-08 22:16         ` Ion Badulescu
2001-02-09  0:09           ` Ion Badulescu
2001-02-09  0:44           ` Donald Becker
2001-02-09  0:47             ` Ion Badulescu
2001-02-09 10:49             ` Alan Cox [this message]
2001-02-09 23:32               ` Ion Badulescu
2001-02-09 23:35                 ` Alan Cox
2001-02-10  8:48                   ` Gérard Roudier
2001-02-12 19:01                     ` Jes Sorensen
2001-02-13 13:06                       ` Jeff Garzik
2001-02-13 20:29                         ` Ion Badulescu
2001-02-14  2:05                           ` Ion Badulescu
2001-02-14 20:10                             ` Gérard Roudier
2001-02-14 15:39                         ` Jes Sorensen
2001-02-17 21:34                         ` David S. Miller
2001-02-19 11:00                           ` Jes Sorensen
2001-02-09 21:42       ` Jes Sorensen
2001-02-09 22:56         ` Donald Becker
2001-02-12 18:54           ` Jes Sorensen
2001-02-14  1:20             ` Donald Becker
2001-02-14 12:37               ` Alan Cox
2001-02-14 12:49                 ` Jeff Garzik
2001-02-14 12:54                   ` Ion Badulescu
2001-02-14 13:05                     ` Alan Cox
2001-02-14 13:38                       ` Ion Badulescu
2001-02-14 15:35               ` Jes Sorensen
  -- strict thread matches above, loose matches on Subject: below --
2001-02-14 16:54 Petr Vandrovec
2001-02-15 16:09 ` Jes Sorensen
2001-02-07 18:42 davej

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