From: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
To: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Dan Carpenter
<dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: RDMA/cxgb4: Support on-chip SQs
Date: Wed, 30 Jan 2013 16:49:52 -0600 [thread overview]
Message-ID: <5109A390.506@opengridcomputing.com> (raw)
In-Reply-To: <CAL1RGDXQW44TTaCZ0rzBAXG1oK3EsiKJXj5+cA1jUJHb85VFNQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 1/30/2013 4:34 PM, Roland Dreier wrote:
> On Wed, Jan 30, 2013 at 1:44 PM, Jason Gunthorpe
> <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org> wrote:
>> So instead of virt_to_phys you should use dma_addr??
> No, you clearly can't use the bus address. That has no relationship to
> the CPU view, even in cases as common as VT-d on x86.
>
By the way, this usage of virt_to_phys() is not new to the commit that
Dan referenced. It has been there since day one of the iw_cxgb[34]
drivers. This doesn't mean its correct however. :)
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2013-01-30 22:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-30 21:00 RDMA/cxgb4: Support on-chip SQs Dan Carpenter
[not found] ` <20130130210006.GA22134-mgFCXtclrQlZLf2FXnZxJA@public.gmane.org>
2013-01-30 21:36 ` Steve Wise
[not found] ` <51099270.5070406-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-01-30 21:44 ` Jason Gunthorpe
[not found] ` <20130130214425.GA5674-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-01-30 21:51 ` Steve Wise
[not found] ` <510995DC.4020602-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-01-30 22:18 ` Jason Gunthorpe
2013-01-30 22:34 ` Roland Dreier
[not found] ` <CAL1RGDXQW44TTaCZ0rzBAXG1oK3EsiKJXj5+cA1jUJHb85VFNQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-01-30 22:49 ` Steve Wise [this message]
2013-01-30 21:45 ` Dan Carpenter
2013-01-30 21:52 ` Steve Wise
[not found] ` <51099622.40505-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-01-30 22:17 ` Steve Wise
2013-03-23 21:30 ` Dan Carpenter
2013-03-23 22:54 ` Steve Wise
2013-03-25 16:14 ` Roland Dreier
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=5109A390.506@opengridcomputing.com \
--to=swise-7bpotxp6k4+p2yhjcf5u+vpxobypeauw@public.gmane.org \
--cc=dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org \
--cc=jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
/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;
as well as URLs for NNTP newsgroup(s).