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From: Dario Faggioli <dario.faggioli@citrix.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Jan Beulich <JBeulich@suse.com>
Cc: tim@xen.org, sstabellini@kernel.org, wei.liu2@citrix.com,
	George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
	ian.jackson@eu.citrix.com, xen-devel@lists.xen.org
Subject: Re: [PATCH v4 4/8] mm: Scrub memory from idle loop
Date: Tue, 13 Jun 2017 22:36:18 +0200	[thread overview]
Message-ID: <1497386178.26212.39.camel@citrix.com> (raw)
In-Reply-To: <1cdf3269-0c9d-63f3-6a03-fcef3a1fe35d@oracle.com>


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On Tue, 2017-06-13 at 14:39 -0400, Boris Ostrovsky wrote:
> On 06/13/2017 04:19 AM, Jan Beulich wrote:
> > > > > On 12.06.17 at 23:28, <dario.faggioli@citrix.com> wrote:
> > > If some vcpu context work is scheduled, SCHEDULE_SOFTIRQ is
> > > raised.
> > > do_softirq() will call the scheduler, which will see that there
> > > is vcpu
> > > tasklet work to do, and hence confirm in execution the idle vcpu,
> > > which
> > > will get to execute do_tasklet().
> > 
> > Right, so something along these lines will need to go into the
> > commit
> > message.
> 
> 
> So would you then prefer to separate this into two patches, with the
> first just moving do_tasklet() above sleeping?
> 
If you want, I can send a patch to this effect (which can then either
just go in, or Boris can carry it in this series).

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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  reply	other threads:[~2017-06-13 20:36 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-19 15:50 [PATCH v4 0/8] Memory scrubbing from idle loop Boris Ostrovsky
2017-05-19 15:50 ` [PATCH v4 1/8] mm: Place unscrubbed pages at the end of pagelist Boris Ostrovsky
2017-06-09 14:50   ` Jan Beulich
2017-06-09 20:07     ` Boris Ostrovsky
2017-06-12  6:50       ` Jan Beulich
2017-05-19 15:50 ` [PATCH v4 2/8] mm: Extract allocation loop from alloc_heap_pages() Boris Ostrovsky
2017-06-09 15:08   ` Jan Beulich
2017-05-19 15:50 ` [PATCH v4 3/8] mm: Scrub pages in alloc_heap_pages() if needed Boris Ostrovsky
2017-06-09 15:22   ` Jan Beulich
2017-06-09 20:55     ` Boris Ostrovsky
2017-06-12  6:54       ` Jan Beulich
2017-05-19 15:50 ` [PATCH v4 4/8] mm: Scrub memory from idle loop Boris Ostrovsky
2017-06-12  8:08   ` Jan Beulich
2017-06-12 17:01     ` Boris Ostrovsky
2017-06-12 21:28       ` Dario Faggioli
2017-06-13  8:19         ` Jan Beulich
2017-06-13 18:39           ` Boris Ostrovsky
2017-06-13 20:36             ` Dario Faggioli [this message]
2017-06-13 21:54               ` Boris Ostrovsky
2017-06-14  9:18             ` Jan Beulich
2017-06-13  8:12       ` Jan Beulich
2017-06-13 18:20         ` Boris Ostrovsky
2017-06-14  9:17           ` Jan Beulich
2017-05-19 15:50 ` [PATCH v4 5/8] spinlock: Introduce spin_lock_cb() Boris Ostrovsky
2017-06-12  8:23   ` Jan Beulich
2017-05-19 15:50 ` [PATCH v4 6/8] mm: Keep heap accessible to others while scrubbing Boris Ostrovsky
2017-06-12  8:30   ` Jan Beulich
2017-06-12 17:11     ` Boris Ostrovsky
2017-05-19 15:50 ` [PATCH v4 7/8] mm: Print number of unscrubbed pages in 'H' debug handler Boris Ostrovsky
2017-05-19 15:50 ` [PATCH v4 8/8] mm: Make sure pages are scrubbed Boris Ostrovsky
2017-06-12  8:43   ` Jan Beulich

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