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From: "David S. Miller" <davem@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: jes@wildopensource.com, zaitcev@redhat.com, khc@pm.waw.pl,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] RFC: kills consistent_dma_mask
Date: Tue, 19 Aug 2003 11:31:20 -0700	[thread overview]
Message-ID: <20030819113120.7ac55d54.davem@redhat.com> (raw)
In-Reply-To: <1061317998.30567.44.camel@dhcp23.swansea.linux.org.uk>

On 19 Aug 2003 19:33:19 +0100
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> On Maw, 2003-08-19 at 17:55, David S. Miller wrote:
> > (d) Makes implementations have to verify the mask is usable
> > on every mapping attempt.
> 
> Or once per type with a bit of thought about it. I deal with
> hardware that has 2 limits on its consistent allocs and a
> different one with its streaming I/O buffers. It doesn't seem
> too atypical either

Are you talking on the platform or the PCI device side?

If on the platform side, the device wants to use the most
capable range/mask/whatever available that also fits it's
limits.

If on the PCI device side, it's also a best fit problem.

Give a specific example so I can map this out in my head.

  reply	other threads:[~2003-08-19 18:44 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-17 22:34 [PATCH] RFC: kills consistent_dma_mask Krzysztof Halasa
2003-08-18  6:37 ` David S. Miller
2003-08-18 12:44   ` Krzysztof Halasa
2003-08-18 12:43     ` David S. Miller
2003-08-18 15:54       ` Krzysztof Halasa
2003-08-18 16:49         ` David S. Miller
2003-08-18 18:21           ` Krzysztof Halasa
2003-08-18 18:50             ` David S. Miller
2003-08-18 21:58               ` Krzysztof Halasa
2003-08-19  9:24                 ` Jes Sorensen
2003-08-19  9:21         ` Jes Sorensen
2003-08-18 13:00     ` Jes Sorensen
2003-08-18  8:07 ` Christoph Hellwig
2003-08-18 15:15 ` Pete Zaitcev
2003-08-18 16:14   ` Krzysztof Halasa
2003-08-19  9:16     ` Jes Sorensen
2003-08-19  9:49       ` Krzysztof Halasa
2003-08-19 10:15         ` Jes Sorensen
2003-08-19  9:03   ` Jes Sorensen
2003-08-19 13:07     ` Alan Cox
2003-08-19 13:20       ` Jes Sorensen
2003-08-19 16:55       ` David S. Miller
2003-08-19 18:33         ` Alan Cox
2003-08-19 18:31           ` David S. Miller [this message]
2003-08-19 20:31         ` Krzysztof Halasa
2003-08-22 11:54           ` Krzysztof Halasa
2003-08-23 17:11             ` Jes Sorensen
2003-08-24 12:06               ` Krzysztof Halasa
2003-08-24 13:00                 ` David S. Miller
2003-08-24 19:58                   ` Krzysztof Halasa
2003-08-25  8:50                     ` Jes Sorensen
2003-08-30 21:18                     ` Krzysztof Halasa
2003-08-31  1:50                       ` David S. Miller
2003-08-31 12:52                         ` Alan Cox
2003-08-31 15:24                           ` Krzysztof Halasa
2003-09-01  5:22                           ` David S. Miller
2003-09-01  7:34                             ` Krzysztof Halasa
2003-09-01  7:43                               ` David S. Miller
2003-09-01 17:14                                 ` Krzysztof Halasa
2003-09-01 17:28                                   ` David S. Miller
2003-09-01 18:24                                     ` Krzysztof Halasa
2003-09-01  7:54                             ` Alan Cox
2003-09-01  7:52                               ` David S. Miller
2003-09-01 16:27                                 ` Krzysztof Halasa
2003-09-01 17:33                                   ` David S. Miller
2003-08-25  8:47                 ` Jes Sorensen

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