public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Christoph Hellwig <hch@lst.de>
To: Roland Dreier <rolandd@cisco.com>
Cc: linux-kernel@vger.kernel.org, linuxppc64-dev@ozlabs.org,
	openib-general@openib.org, SCHICKHJ@de.ibm.com,
	RAISCH@de.ibm.com, HNGUYEN@de.ibm.com, MEDER@de.ibm.com
Subject: Re: [openib-general] [PATCH 08/22] Generic ehca headers
Date: Sat, 18 Feb 2006 16:09:20 +0100	[thread overview]
Message-ID: <20060218150920.GA23817@lst.de> (raw)
In-Reply-To: <20060218005723.13620.10389.stgit@localhost.localdomain>

On Fri, Feb 17, 2006 at 04:57:23PM -0800, Roland Dreier wrote:
> From: Roland Dreier <rolandd@cisco.com>
> 
> The defines of TRUE and FALSE look rather useless.  Why are they needed?
> 
> What is struct ehca_cache for?  It doesn't seem to be used anywhere.
> 
> ehca_kv_to_g() looks completely horrible.  The whole idea of using
> vmalloc()ed kernel memory to do DMA seems unacceptable to me.

When you want to do scatter-gather dma on kernel-virtual contingous
areas allocate the pages individually and map them into kva using
vmap().  Then dma can be performed using dma_map_page, or in case
you have lots of pages dma_map_sg after creating an S/G list.


  reply	other threads:[~2006-02-18 15:09 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-18  0:55 [PATCH 00/22] [RFC] IBM eHCA InfiniBand adapter driver Roland Dreier
2006-02-18  0:57 ` [PATCH 01/22] Add powerpc-specific clear_cacheline(), which just compiles to "dcbz" Roland Dreier
2006-02-18 12:17   ` Christoph Hellwig
2006-02-20 14:59   ` Anton Blanchard
2006-02-18  0:57 ` [PATCH 02/22] Firmware interface code for IB device Roland Dreier
2006-02-18  1:58   ` Greg KH
2006-02-18  2:04     ` Roland Dreier
2006-02-18 12:20       ` Christoph Hellwig
2006-02-18 12:26         ` Muli Ben-Yehuda
2006-02-18 12:29           ` Christoph Hellwig
2006-02-18 12:32           ` Arjan van de Ven
2006-02-18 16:32             ` Roland Dreier
2006-02-18 17:02               ` Arjan van de Ven
2006-02-18 18:15               ` Greg KH
2006-02-18 18:19                 ` Christoph Hellwig
2006-02-18 18:52                 ` Roland Dreier
2006-02-18 19:53                   ` Greg KH
2006-02-18 21:31                     ` Roland Dreier
2006-02-18 23:29                       ` Greg KH
2006-02-19  0:09                         ` Roland Dreier
2006-02-18 10:59     ` Heiko Carstens
2006-02-18 12:19   ` Christoph Hellwig
2006-02-18  0:57 ` [PATCH 03/22] pHype specific stuff Roland Dreier
2006-02-18 12:23   ` Christoph Hellwig
2006-02-20 15:09   ` Anton Blanchard
2006-02-18  0:57 ` [PATCH 04/22] OF adapter probing Roland Dreier
2006-02-18  1:54   ` Greg KH
2006-02-18 12:46   ` [openib-general] " Heiko J Schick
2006-02-18 16:02     ` Roland Dreier
2006-02-18  0:57 ` [PATCH 05/22] HW register abstractions Roland Dreier
2006-02-18  0:57 ` [PATCH 06/22] Queue handling Roland Dreier
2006-02-18  0:57 ` [PATCH 07/22] Hypercall definitions Roland Dreier
2006-02-20 15:12   ` Anton Blanchard
2006-02-18  0:57 ` [PATCH 08/22] Generic ehca headers Roland Dreier
2006-02-18 15:09   ` Christoph Hellwig [this message]
2006-02-18  0:57 ` [PATCH 09/22] ehca classes Roland Dreier
2006-02-18  0:57 ` [PATCH 11/22] ehca event queues Roland Dreier
2006-02-18  0:57 ` [PATCH 12/22] ehca low-level verbs Roland Dreier
2006-02-18  0:57 ` [PATCH 13/22] HCA query functions Roland Dreier
2006-02-18  0:57 ` [PATCH 14/22] ehca completion queue handling Roland Dreier
2006-02-18  0:57 ` [PATCH 15/22] ehca queue pair handling Roland Dreier
2006-02-18  0:57 ` [PATCH 16/22] ehca post send/receive and poll CQ Roland Dreier
2006-02-18  0:57 ` [PATCH 17/22] Special QP functions Roland Dreier
2006-02-18  0:57 ` [PATCH 18/22] ehca address vectors, multicast groups, protection domains Roland Dreier
2006-02-18  0:57 ` [PATCH 19/22] ehca memory regions Roland Dreier
2006-02-18  0:57 ` [PATCH 20/22] ehca userspace verbs Roland Dreier
2006-02-18  0:57 ` [PATCH 21/22] ehca main file Roland Dreier
2006-02-20 15:22   ` Anton Blanchard
2006-02-20 16:52     ` Roland Dreier
2006-02-21  2:09     ` [openib-general] " Heiko J Schick
2006-02-20 18:32       ` Arnd Bergmann
2006-02-18  0:58 ` [PATCH 22/22] ehca Makefile/Kconfig changes Roland Dreier
2006-02-20 15:06 ` [PATCH 00/22] [RFC] IBM eHCA InfiniBand adapter driver Christoph Raisch
2006-02-20 16:55   ` Roland Dreier
2006-02-20 17:43   ` [openib-general] " Stephen Poole

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20060218150920.GA23817@lst.de \
    --to=hch@lst.de \
    --cc=HNGUYEN@de.ibm.com \
    --cc=MEDER@de.ibm.com \
    --cc=RAISCH@de.ibm.com \
    --cc=SCHICKHJ@de.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxppc64-dev@ozlabs.org \
    --cc=openib-general@openib.org \
    --cc=rolandd@cisco.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox