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From: "Jan Beulich" <JBeulich@suse.com>
To: Chong Li <lichong659@gmail.com>
Cc: Chong Li <chong.li@wustl.edu>, Wei Liu <wei.liu2@citrix.com>,
	Sisu Xi <xisisu@gmail.com>,
	George Dunlap <george.dunlap@eu.citrix.com>,
	Dario Faggioli <dario.faggioli@citrix.com>,
	xen-devel <xen-devel@lists.xen.org>,
	Meng Xu <mengxu@cis.upenn.edu>,
	Dagaen Golomb <dgolomb@seas.upenn.edu>
Subject: Re: [PATCH v6 for Xen 4.7 1/4] xen: enable per-VCPU parameter settings for RTDS scheduler
Date: Mon, 14 Mar 2016 02:37:38 -0600	[thread overview]
Message-ID: <56E6866202000078000DBECD@prv-mh.provo.novell.com> (raw)
In-Reply-To: <CAGHO-ipbcKRONjVs_FcsXT9_yQKVt1D4_SCibdkfqC9Jn_bO1g@mail.gmail.com>

>>> On 13.03.16 at 18:05, <lichong659@gmail.com> wrote:
> So I still keep my design here?
> 
> Dario, Jan and Wei,

Afaic:

> I almost finished a new version, but since this part is critical for
> the whole patch, let me summarize the feedbacks here. Please correct
> me if my understanding is wrong.
> 
> 1) We don't need "guest_handle_is_null()" check, because null handle
> could be used in some special cases. And normally, handle is checked
> by copy_from(to)_guest* functions.

Yes.

> 2) In domctl.h, add explain for nr_vcpus, because it is used in both
> IN and OUT ways.

Yes.

> 3) Use printk(XENLOG_G_WARNING ...) here, because of its rate limit feature.

I'd say XENLOG_G_DEBUG, and even that only if you really think
the message is useful.

> 4) Do I still keep the spin_lock inside the loop body?

I think overall that's the better alternative.

Jan


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  reply	other threads:[~2016-03-14  8:37 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-06 17:55 [PATCH v6 for Xen 4.7 0/4] Enable per-VCPU parameter settings for RTDS scheduler Chong Li
2016-03-06 17:55 ` [PATCH v6 for Xen 4.7 1/4] xen: enable " Chong Li
2016-03-07 12:59   ` Jan Beulich
2016-03-07 16:28     ` Chong Li
2016-03-07 16:40       ` Jan Beulich
2016-03-07 17:53         ` Dario Faggioli
2016-03-07 22:16           ` Chong Li
2016-03-08  9:10           ` Jan Beulich
2016-03-08 10:34             ` Dario Faggioli
2016-03-08 11:47               ` Jan Beulich
2016-03-08 19:09   ` Wei Liu
2016-03-09 16:10     ` Dario Faggioli
2016-03-09 16:38       ` Jan Beulich
2016-03-13 17:05         ` Chong Li
2016-03-14  8:37           ` Jan Beulich [this message]
2016-03-14  9:10             ` Dario Faggioli
2016-03-14  9:15               ` Jan Beulich
2016-03-14 10:05                 ` Dario Faggioli
2016-03-15 16:22                   ` Chong Li
2016-03-15 16:41                     ` Dario Faggioli
2016-03-15 17:22                       ` Chong Li
2016-03-16  3:14                         ` Meng Xu
2016-03-16  3:32                           ` Chong Li
2016-03-16  3:43                             ` Meng Xu
2016-03-16  8:23                               ` Dario Faggioli
2016-03-16 14:37                                 ` Meng Xu
2016-03-16 14:46                                   ` Chong Li
2016-03-16 14:53                                   ` Dario Faggioli
2016-03-16 14:46                                 ` Chong Li
2016-03-16 14:54                                   ` Dario Faggioli
2016-03-16 10:48                               ` Jan Beulich
2016-03-10 22:35     ` Chong Li
2016-03-10 22:50       ` Wei Liu
2016-03-14  9:07         ` Dario Faggioli
2016-03-06 17:55 ` [PATCH v6 for Xen 4.7 2/4] libxc: " Chong Li
2016-03-08 19:09   ` Wei Liu
2016-03-08 19:32     ` Chong Li
2016-03-08 19:36       ` Wei Liu
2016-03-06 17:55 ` [PATCH v6 for Xen 4.7 3/4] libxl: " Chong Li
2016-03-08 19:12   ` Wei Liu
2016-03-09  0:38     ` Chong Li
2016-03-09 14:01       ` Wei Liu
2016-03-09 17:28     ` Dario Faggioli
2016-03-09 21:57       ` Chong Li
2016-03-09 17:09   ` Dario Faggioli
2016-03-09 17:28     ` Dario Faggioli
2016-03-06 17:55 ` [PATCH v6 for Xen 4.7 4/4] xl: " Chong Li
2016-03-08 19:12   ` Wei Liu
2016-03-08 21:24     ` Chong Li
2016-03-09 14:01       ` Wei Liu
2016-03-09 14:09   ` Wei Liu

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