patches for DPDK stable branches
 help / color / mirror / Atom feed
From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	"Hu, Jiayu" <jiayu.hu@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Wang, Yinan" <yinan.wang@intel.com>,
	"Pai G, Sunil" <sunil.pai.g@intel.com>,
	"Jiang, Cheng1" <cheng1.jiang@intel.com>,
	"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH v3 3/4] vhost: fix unnecessary vring_state_changed call
Date: Wed, 21 Apr 2021 01:36:13 +0000
Message-ID: <MN2PR11MB4063532C09D70A910361190D9C479@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <b03b37a6-961e-d8ff-d8fd-28b60c11bcc9@redhat.com>

Hi Maxime & Jiayu,

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Tuesday, April 20, 2021 5:40 PM
> To: Hu, Jiayu <jiayu.hu@intel.com>; dev@dpdk.org; Xia, Chenbo
> <chenbo.xia@intel.com>
> Cc: Wang, Yinan <yinan.wang@intel.com>; Pai G, Sunil <sunil.pai.g@intel.com>;
> Jiang, Cheng1 <cheng1.jiang@intel.com>; stable@dpdk.org
> Subject: Re: [PATCH v3 3/4] vhost: fix unnecessary vring_state_changed call
> 
> 
> 
> On 4/20/21 10:57 AM, Jiayu Hu wrote:
> > When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
> > there is no need for vhost_user_set_vring_kick() to
> > notify the application of vring enabled, as
> > vhost_user_msg_handler() also notifies the application.
> >
> > This patch is to remove unnecessary vring_state_changed() call.
> >
> > Fixes: 966027b4b3a3 ("vhost: fix silent queue enabling with legacy guests")
> 
> Sorry, I thought the vring_state_changed cb was introduced when Matan
> did the rework last year, but it is actually older.
> 
> If we backport the patch on v19.11, we will create a regression as it
> will revert Ilya's patch.
> 
> I think that your fix is correct only once Matan's series is present, so
> we should have below Fixes tag:
> 
> Fixes: d0fcc38f5fa4 ("vhost: improve device readiness notifications")
> 
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Jiayu Hu <jiayu.hu@intel.com>
> > Tested-by: Yinan Wang <yinan.wang@intel.com>
> > ---
> >  lib/librte_vhost/vhost_user.c | 3 ---
> >  1 file changed, 3 deletions(-)
> >
> > diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
> > index fa8929f..611ff20 100644
> > --- a/lib/librte_vhost/vhost_user.c
> > +++ b/lib/librte_vhost/vhost_user.c
> > @@ -1922,9 +1922,6 @@ vhost_user_set_vring_kick(struct virtio_net **pdev,
> struct VhostUserMsg *msg,
> >  	 */
> >  	if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
> >  		vq->enabled = true;
> > -		if (dev->notify_ops->vring_state_changed)
> > -			dev->notify_ops->vring_state_changed(
> > -				dev->vid, file.index, 1);
> >  	}
> >
> >  	if (vq->ready) {
> >
> 
> With the fixes tag changed:
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> 
> Chanbo, can you change the Fixes tag while applying or Jiayu needs to
> send a new revision?

No worry. Will change fix tag while applying.

Thanks!
Chenbo

> 
> Thanks,
> Maxime


      reply	other threads:[~2021-04-21  1:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1615985773-406787-1-git-send-email-jiayu.hu@intel.com>
     [not found] ` <1617368642-131298-1-git-send-email-jiayu.hu@intel.com>
2021-04-02 13:03   ` [dpdk-stable] [PATCH v2 1/4] vhost: fix uninitialized vhost queue Jiayu Hu
2021-04-13 11:30     ` Maxime Coquelin
     [not found]   ` <1618909066-114980-1-git-send-email-jiayu.hu@intel.com>
2021-04-20  8:57     ` [dpdk-stable] [PATCH v3 " Jiayu Hu
2021-04-20  8:57     ` [dpdk-stable] [PATCH v3 3/4] vhost: fix unnecessary vring_state_changed call Jiayu Hu
2021-04-20  9:39       ` Maxime Coquelin
2021-04-21  1:36         ` Xia, Chenbo [this message]

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=MN2PR11MB4063532C09D70A910361190D9C479@MN2PR11MB4063.namprd11.prod.outlook.com \
    --to=chenbo.xia@intel.com \
    --cc=cheng1.jiang@intel.com \
    --cc=dev@dpdk.org \
    --cc=jiayu.hu@intel.com \
    --cc=maxime.coquelin@redhat.com \
    --cc=stable@dpdk.org \
    --cc=sunil.pai.g@intel.com \
    --cc=yinan.wang@intel.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

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git