From: Paul Durrant <Paul.Durrant@citrix.com>
To: Yu Zhang <yu.c.zhang@linux.intel.com>, Jan Beulich <JBeulich@suse.com>
Cc: Kevin Tian <kevin.tian@intel.com>,
Andrew Cooper <Andrew.Cooper3@citrix.com>,
"Tim (Xen.org)" <tim@xen.org>,
George Dunlap <George.Dunlap@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
"zhiyuan.lv@intel.com" <zhiyuan.lv@intel.com>,
Jun Nakajima <jun.nakajima@intel.com>
Subject: Re: [PATCH v5 3/4] x86/ioreq server: Add HVMOP to map guest ram with p2m_ioreq_server to an ioreq server.
Date: Tue, 9 Aug 2016 09:07:01 +0000 [thread overview]
Message-ID: <fe2c3382e1de4be7aa4d397bc9cc26e7@AMSPEX02CL03.citrite.net> (raw)
In-Reply-To: <57A9997A.1080300@linux.intel.com>
> -----Original Message-----
> From: Yu Zhang [mailto:yu.c.zhang@linux.intel.com]
> Sent: 09 August 2016 09:51
> To: Paul Durrant; Jan Beulich
> Cc: Andrew Cooper; George Dunlap; Jun Nakajima; Kevin Tian;
> zhiyuan.lv@intel.com; xen-devel@lists.xen.org; Tim (Xen.org)
> Subject: Re: [Xen-devel] [PATCH v5 3/4] x86/ioreq server: Add HVMOP to
> map guest ram with p2m_ioreq_server to an ioreq server.
>
>
>
> On 8/9/2016 4:20 PM, Paul Durrant wrote:
> >> -----Original Message-----
> >> From: Jan Beulich [mailto:JBeulich@suse.com]
> >> Sent: 09 August 2016 09:11
> >> To: Paul Durrant; Yu Zhang
> >> Cc: Andrew Cooper; George Dunlap; Jun Nakajima; Kevin Tian;
> >> zhiyuan.lv@intel.com; xen-devel@lists.xen.org; Tim (Xen.org)
> >> Subject: Re: [Xen-devel] [PATCH v5 3/4] x86/ioreq server: Add HVMOP to
> >> map guest ram with p2m_ioreq_server to an ioreq server.
> >>
> >>>>> On 09.08.16 at 09:39, <yu.c.zhang@linux.intel.com> wrote:
> >>> On 8/8/2016 11:40 PM, Jan Beulich wrote:
> >>>>>>> On 12.07.16 at 11:02, <yu.c.zhang@linux.intel.com> wrote:
> >>>>> + rc = -ENOENT;
> >>>>> + list_for_each_entry ( s,
> >>>>> + &d->arch.hvm_domain.ioreq_server.list,
> >>>>> + list_entry )
> >>>>> + {
> >>>>> + if ( s == d->arch.hvm_domain.default_ioreq_server )
> >>>>> + continue;
> >>>>> +
> >>>>> + if ( s->id == id )
> >>>>> + {
> >>>>> + rc = p2m_set_ioreq_server(d, flags, s);
> >>>>> + if ( rc == 0 )
> >>>>> + dprintk(XENLOG_DEBUG, "%u %s type
> >> HVMMEM_ioreq_server.\n",
> >>>>> + s->id, (flags != 0) ? "mapped to" : "unmapped from");
> >>>> Is this really useful?
> >>> Sorry, are you referring to this debug message?
> >>> I believe it helps, especially when multiple ioreq servers are
> >>> claiming/disclaiming their ownership of
> >>> the HVMMEM_ioreq_server. :)
> >> Well, that's a configuration bug anyway right now, so I'm not really
> >> with you. But in the end it'll be Paul to judge ...
> >>
> > Indeed, I don't the message has a massive amount of value. More useful
> would be to add a call into keyhandler.c:dump_domains() to display the
> current claim.
> >
>
> All right. Let's remove this debug message. The debug key handler can be
> updated in a separate patch, is this OK? :-)
>
OK with me.
Paul
> Yu
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next prev parent reply other threads:[~2016-08-09 9:07 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-12 9:02 [PATCH v5 0/4] x86/ioreq server: Introduce HVMMEM_ioreq_server mem type Yu Zhang
2016-07-12 9:02 ` [PATCH v5 1/4] x86/ioreq server: Rename p2m_mmio_write_dm to p2m_ioreq_server Yu Zhang
2016-07-12 9:02 ` [PATCH v5 2/4] x86/ioreq server: Add new functions to get/set memory types Yu Zhang
2016-07-12 9:02 ` [PATCH v5 3/4] x86/ioreq server: Add HVMOP to map guest ram with p2m_ioreq_server to an ioreq server Yu Zhang
2016-08-08 15:40 ` Jan Beulich
2016-08-09 7:39 ` Yu Zhang
2016-08-09 8:11 ` Jan Beulich
2016-08-09 8:20 ` Paul Durrant
2016-08-09 8:51 ` Yu Zhang
2016-08-09 9:07 ` Paul Durrant [this message]
2016-08-10 8:09 ` Yu Zhang
2016-08-10 10:33 ` Jan Beulich
2016-08-10 10:43 ` Paul Durrant
2016-08-10 12:32 ` Yu Zhang
2016-08-10 10:43 ` Yu Zhang
2016-08-11 8:47 ` Yu Zhang
2016-08-11 8:58 ` Jan Beulich
2016-08-11 9:19 ` Yu Zhang
2016-07-12 9:02 ` [PATCH v5 4/4] x86/ioreq server: Reset outstanding p2m_ioreq_server entries when an ioreq server unmaps Yu Zhang
2016-08-08 16:29 ` Jan Beulich
2016-08-09 7:39 ` Yu Zhang
2016-08-09 8:13 ` Jan Beulich
2016-08-09 9:25 ` Yu Zhang
2016-08-09 9:45 ` Jan Beulich
2016-08-09 10:21 ` Yu Zhang
2016-08-16 13:35 ` George Dunlap
2016-08-16 13:54 ` Jan Beulich
2016-08-30 12:17 ` Yu Zhang
2016-09-02 11:00 ` Yu Zhang
2016-08-05 2:44 ` [PATCH v5 0/4] x86/ioreq server: Introduce HVMMEM_ioreq_server mem type Yu Zhang
2016-08-05 6:16 ` Jan Beulich
2016-08-05 12:46 ` George Dunlap
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