From: Robert Hancock <hancockrwd@gmail.com>
To: Sanka Piyaratna <cesanka@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Posted Write onto a PCI end point device using Linux
Date: Tue, 07 Dec 2010 19:46:54 -0600 [thread overview]
Message-ID: <4CFEE38E.3020500@gmail.com> (raw)
In-Reply-To: <712019.56679.qm@web31702.mail.mud.yahoo.com>
On 12/07/2010 05:29 AM, Sanka Piyaratna wrote:
> Hi,
>
>
> I am wondering whether it is possible to issue a posted write using the host
> computer's root complex towards an PCI express end point. I have done this using
>
> DMA in the past. However, if posted writes are possible that would save a lot of
>
> time and effort and would be quicker too.
Writes from the CPU to PCI memory are always posted. However, the posted
write buffer size is usually quite limited and so this probably will
still cause CPU overhead when writing any significant amount of data
this way.
next prev parent reply other threads:[~2010-12-08 1:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-07 11:29 Posted Write onto a PCI end point device using Linux Sanka Piyaratna
2010-12-08 1:46 ` Robert Hancock [this message]
[not found] ` <597621.83948.qm@web31707.mail.mud.yahoo.com>
2010-12-08 4:55 ` Robert Hancock
2010-12-08 6:05 ` Sanka Piyaratna
2010-12-08 15:23 ` Robert Hancock
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=4CFEE38E.3020500@gmail.com \
--to=hancockrwd@gmail.com \
--cc=cesanka@yahoo.com \
--cc=linux-kernel@vger.kernel.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