From: Stephen Hemminger <stephen@networkplumber.org>
To: Alexander Duyck <alexander.duyck@gmail.com>
Cc: dev@dpdk.org, hjk@hansjkoch.de, gregkh@linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X
Date: Thu, 1 Oct 2015 17:01:45 -0700 [thread overview]
Message-ID: <20151001170145.4239de9f@urahara> (raw)
In-Reply-To: <560DC45A.3050507@gmail.com>
On Thu, 1 Oct 2015 16:40:10 -0700
Alexander Duyck <alexander.duyck@gmail.com> wrote:
> I agree with some other reviewers. Why call pci_enable_msix in open?
> It seems like it would make much more sense to do this on probe, and
> then disable MSI-X on free. I can only assume you are trying to do it
> to save on resources but the fact is this is a driver you have to
> explicitly force onto a device so you would probably be safe to assume
> that they plan to use it in the near future.
Because if interface is not up, the MSI handle doesn't have to be open.
This saves resources and avoids some races.
next prev parent reply other threads:[~2015-10-02 0:01 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 22:28 [dpdk-dev] [PATCH 0/2] uio_msi: device driver Stephen Hemminger
2015-09-30 22:28 ` [dpdk-dev] [PATCH 1/2] uio: add support for ioctls Stephen Hemminger
2015-09-30 22:28 ` [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Stephen Hemminger
2015-10-01 8:33 ` Michael S. Tsirkin
2015-10-01 10:37 ` Michael S. Tsirkin
2015-10-01 16:06 ` Michael S. Tsirkin
2015-10-01 14:50 ` Stephen Hemminger
2015-10-01 15:22 ` Michael S. Tsirkin
2015-10-01 16:31 ` Michael S. Tsirkin
2015-10-01 17:26 ` Stephen Hemminger
2015-10-01 18:25 ` Michael S. Tsirkin
2015-10-05 21:54 ` Michael S. Tsirkin
2015-10-05 22:09 ` Vladislav Zolotarov
2015-10-05 22:49 ` Michael S. Tsirkin
2015-10-06 7:33 ` Stephen Hemminger
2015-10-06 12:15 ` Avi Kivity
2015-10-06 14:07 ` Michael S. Tsirkin
2015-10-06 15:41 ` Avi Kivity
2015-10-16 17:11 ` Thomas Monjalon
2015-10-16 17:20 ` Stephen Hemminger
2015-10-06 13:42 ` Michael S. Tsirkin
2015-10-06 8:23 ` Vlad Zolotarov
2015-10-06 13:58 ` Michael S. Tsirkin
2015-10-06 14:49 ` Vlad Zolotarov
2015-10-06 15:00 ` Michael S. Tsirkin
2015-10-06 16:40 ` Vlad Zolotarov
2015-10-01 23:40 ` Alexander Duyck
2015-10-02 0:01 ` Stephen Hemminger [this message]
2015-10-02 1:21 ` Alexander Duyck
2015-10-02 0:04 ` Stephen Hemminger
2015-10-02 2:33 ` Alexander Duyck
2015-10-01 8:36 ` [dpdk-dev] [PATCH 0/2] uio_msi: device driver Michael S. Tsirkin
2015-10-01 10:59 ` Avi Kivity
2015-10-01 14:57 ` Stephen Hemminger
2015-10-01 19:48 ` Alexander Duyck
2015-10-01 22:00 ` Stephen Hemminger
2015-10-01 23:03 ` Alexander Duyck
2015-10-01 23:39 ` Stephen Hemminger
2015-10-01 23:43 ` Alexander Duyck
2015-10-02 0:04 ` Stephen Hemminger
2015-10-02 1:39 ` Alexander Duyck
2015-10-04 16:49 ` Vlad Zolotarov
2015-10-04 19:03 ` Greg KH
2015-10-04 20:49 ` Vlad Zolotarov
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=20151001170145.4239de9f@urahara \
--to=stephen@networkplumber.org \
--cc=alexander.duyck@gmail.com \
--cc=dev@dpdk.org \
--cc=gregkh@linux-foundation.org \
--cc=hjk@hansjkoch.de \
--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;
as well as URLs for NNTP newsgroup(s).