All of lore.kernel.org
 help / color / mirror / Atom feed
From: Thomas Gleixner <tglx@linutronix.de>
To: Ian Campbell <Ian.Campbell@eu.citrix.com>
Cc: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	xen-devel <xen-devel@lists.xensource.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: xen: IPI interrupts not resumed early enough on suspend/resume
Date: Mon, 3 Oct 2011 22:35:45 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.2.02.1110032229250.1489@ionos> (raw)
In-Reply-To: <1317668908.11991.20.camel@dagon.hellion.org.uk>

On Mon, 3 Oct 2011, Ian Campbell wrote:
> On Mon, 2011-10-03 at 19:42 +0100, Thomas Gleixner wrote:
> > On Mon, 3 Oct 2011, Ian Campbell wrote:
> > > I can see a few options for how I might go about solving this in a
> > > non-hacky way, which approach do you think would be preferable:
> > 
> > The question is whether you need to disable the IPI interrupt at
> > all. If not, we have a flag for that.
> 
> We already that flag for these (I think that was why it was added even).
> The issue is that in the resuming domain on the other side event
> channels all start off masked and something needs to unmask them.

Bah.
 
> > >       * Add "IRQF_RESUME_EARLY", driven from syscore_resume, and use it
> > >         for these interrupts.
> > 
> > That's the preferable solution, as we could use that for PPC as well,
> > unless we can move stuff around, so we disable stuff later.
> 
> OK

I guess we should go down that road then.

Thanks,

	tglx

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: Ian Campbell <Ian.Campbell@eu.citrix.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>,
	xen-devel <xen-devel@lists.xensource.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: xen: IPI interrupts not resumed early enough on suspend/resume
Date: Mon, 3 Oct 2011 22:35:45 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.2.02.1110032229250.1489@ionos> (raw)
In-Reply-To: <1317668908.11991.20.camel@dagon.hellion.org.uk>

On Mon, 3 Oct 2011, Ian Campbell wrote:
> On Mon, 2011-10-03 at 19:42 +0100, Thomas Gleixner wrote:
> > On Mon, 3 Oct 2011, Ian Campbell wrote:
> > > I can see a few options for how I might go about solving this in a
> > > non-hacky way, which approach do you think would be preferable:
> > 
> > The question is whether you need to disable the IPI interrupt at
> > all. If not, we have a flag for that.
> 
> We already that flag for these (I think that was why it was added even).
> The issue is that in the resuming domain on the other side event
> channels all start off masked and something needs to unmask them.

Bah.
 
> > >       * Add "IRQF_RESUME_EARLY", driven from syscore_resume, and use it
> > >         for these interrupts.
> > 
> > That's the preferable solution, as we could use that for PPC as well,
> > unless we can move stuff around, so we disable stuff later.
> 
> OK

I guess we should go down that road then.

Thanks,

	tglx

  reply	other threads:[~2011-10-03 20:35 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-03 15:10 xen: IPI interrupts not resumed early enough on suspend/resume Ian Campbell
2011-10-03 18:42 ` Thomas Gleixner
2011-10-03 18:42   ` Thomas Gleixner
2011-10-03 19:08   ` Ian Campbell
2011-10-03 20:35     ` Thomas Gleixner [this message]
2011-10-03 20:35       ` Thomas Gleixner
2011-10-07 15:32       ` Ian Campbell
2011-10-07 15:32         ` Ian Campbell
2011-10-07 16:29         ` Thomas Gleixner
2011-10-10 13:06           ` Ian Campbell
2011-10-14 13:23             ` Ian Campbell
2011-10-15 21:14               ` [Xen-devel] " Ian Campbell
2011-10-15 21:14                 ` Ian Campbell
2011-10-17  8:51                 ` Thomas Gleixner
2011-10-17  9:25                   ` Ian Campbell
2011-10-17  9:39                     ` Thomas Gleixner
2011-10-17 13:55                   ` Ian Campbell
2011-10-17 13:55                     ` Ian Campbell
2011-10-03 20:02   ` Rafael J. Wysocki
2011-10-03 20:28     ` Thomas Gleixner

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=alpine.LFD.2.02.1110032229250.1489@ionos \
    --to=tglx@linutronix.de \
    --cc=Ian.Campbell@eu.citrix.com \
    --cc=Jeremy.Fitzhardinge@citrix.com \
    --cc=konrad.wilk@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rjw@sisk.pl \
    --cc=xen-devel@lists.xensource.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.