From: "Jan Beulich" <JBeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Haozhong Zhang <haozhong.zhang@intel.com>,
Kevin Tian <kevin.tian@intel.com>, Wei Liu <wei.liu2@citrix.com>,
Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
xen-devel@lists.xen.org, Jun Nakajima <jun.nakajima@intel.com>,
Xiao Guangrong <guangrong.xiao@linux.intel.com>,
Keir Fraser <keir@xen.org>
Subject: Re: [PATCH 4/4] hvmloader: add support to load extra ACPI tables from qemu
Date: Thu, 21 Jan 2016 03:26:25 -0700 [thread overview]
Message-ID: <56A0C06102000078000C9826@prv-mh.provo.novell.com> (raw)
In-Reply-To: <56A0A501.90505@citrix.com>
>>> On 21.01.16 at 10:29, <andrew.cooper3@citrix.com> wrote:
> On 21/01/16 09:10, Xiao Guangrong wrote:
>> I am not sure if i have understood your point. What your suggestion is
>> that
>> leave PMEM for hypervisor and all other parts (PBLK and _DSM handling) to
>> Dom0? If yes, we should:
>> a) handle hotplug in hypervisor (new PMEM add/remove) that causes
>> hyperivsor
>> interpret ACPI SSDT/DSDT.
>> b) some _DSMs control PMEM so you should filter out these kind of
>> _DSMs and
>> handle them in hypervisor.
>> c) hypervisor should mange PMEM resource pool and partition it to
>> multiple
>> VMs.
>
> It is not possible for Xen to handle ACPI such as this.
>
> There can only be one OSPM on a system, and 9/10ths of the functionality
> needing it already lives in Dom0.
>
> The only rational course of action is for Xen to treat both PBLK and
> PMEM as "devices" and leave them in Dom0's hands.
See my other reply: Why would this be different from "ordinary"
memory hotplug?
Jan
next prev parent reply other threads:[~2016-01-21 10:26 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 11:31 [PATCH 0/4] add support for vNVDIMM Haozhong Zhang
2015-12-29 11:31 ` [PATCH 1/4] x86/hvm: allow guest to use clflushopt and clwb Haozhong Zhang
2015-12-29 15:46 ` Andrew Cooper
2015-12-30 1:35 ` Haozhong Zhang
2015-12-30 2:16 ` Haozhong Zhang
2015-12-30 10:33 ` Andrew Cooper
2015-12-29 11:31 ` [PATCH 2/4] x86/hvm: add support for pcommit instruction Haozhong Zhang
2015-12-29 11:31 ` [PATCH 3/4] tools/xl: add a new xl configuration 'nvdimm' Haozhong Zhang
2016-01-04 11:16 ` Wei Liu
2016-01-06 12:40 ` Jan Beulich
2016-01-06 15:28 ` Haozhong Zhang
2015-12-29 11:31 ` [PATCH 4/4] hvmloader: add support to load extra ACPI tables from qemu Haozhong Zhang
2016-01-15 17:10 ` Jan Beulich
2016-01-18 0:52 ` Haozhong Zhang
2016-01-18 8:46 ` Jan Beulich
2016-01-19 11:37 ` Wei Liu
2016-01-19 11:46 ` Jan Beulich
2016-01-20 5:14 ` Tian, Kevin
2016-01-20 5:58 ` Zhang, Haozhong
2016-01-20 5:31 ` Haozhong Zhang
2016-01-20 8:46 ` Jan Beulich
2016-01-20 8:58 ` Andrew Cooper
2016-01-20 10:15 ` Haozhong Zhang
2016-01-20 10:36 ` Xiao Guangrong
2016-01-20 13:16 ` Andrew Cooper
2016-01-20 14:29 ` Stefano Stabellini
2016-01-20 14:42 ` Haozhong Zhang
2016-01-20 14:45 ` Andrew Cooper
2016-01-20 14:53 ` Haozhong Zhang
2016-01-20 15:13 ` Konrad Rzeszutek Wilk
2016-01-20 15:29 ` Haozhong Zhang
2016-01-20 15:41 ` Konrad Rzeszutek Wilk
2016-01-20 15:54 ` Haozhong Zhang
2016-01-21 3:35 ` Bob Liu
2016-01-20 15:05 ` Stefano Stabellini
2016-01-20 18:14 ` Andrew Cooper
2016-01-20 14:38 ` Haozhong Zhang
2016-01-20 11:04 ` Haozhong Zhang
2016-01-20 11:20 ` Jan Beulich
2016-01-20 15:29 ` Xiao Guangrong
2016-01-20 15:47 ` Konrad Rzeszutek Wilk
2016-01-20 16:25 ` Xiao Guangrong
2016-01-20 16:47 ` Konrad Rzeszutek Wilk
2016-01-20 16:55 ` Xiao Guangrong
2016-01-20 17:18 ` Konrad Rzeszutek Wilk
2016-01-20 17:23 ` Xiao Guangrong
2016-01-20 17:48 ` Konrad Rzeszutek Wilk
2016-01-21 3:12 ` Haozhong Zhang
2016-01-20 17:07 ` Jan Beulich
2016-01-20 17:17 ` Xiao Guangrong
2016-01-21 8:18 ` Jan Beulich
2016-01-21 8:25 ` Xiao Guangrong
2016-01-21 8:53 ` Jan Beulich
2016-01-21 9:10 ` Xiao Guangrong
2016-01-21 9:29 ` Andrew Cooper
2016-01-21 10:26 ` Jan Beulich [this message]
2016-01-21 10:25 ` Jan Beulich
2016-01-21 14:01 ` Haozhong Zhang
2016-01-21 14:52 ` Jan Beulich
2016-01-22 2:43 ` Haozhong Zhang
2016-01-26 11:44 ` George Dunlap
2016-01-26 12:44 ` Jan Beulich
2016-01-26 12:54 ` Juergen Gross
2016-01-26 14:44 ` Konrad Rzeszutek Wilk
2016-01-26 15:37 ` Jan Beulich
2016-01-26 15:57 ` Haozhong Zhang
2016-01-26 16:34 ` Jan Beulich
2016-01-26 19:32 ` Konrad Rzeszutek Wilk
2016-01-27 7:22 ` Haozhong Zhang
2016-01-27 10:16 ` Jan Beulich
2016-01-27 14:50 ` Konrad Rzeszutek Wilk
2016-01-27 10:55 ` George Dunlap
2016-01-26 13:58 ` George Dunlap
2016-01-26 14:46 ` Konrad Rzeszutek Wilk
2016-01-26 15:30 ` Haozhong Zhang
2016-01-26 15:33 ` Haozhong Zhang
2016-01-26 15:57 ` Jan Beulich
2016-01-27 2:23 ` Haozhong Zhang
2016-01-20 15:07 ` Konrad Rzeszutek Wilk
2016-01-06 15:37 ` [PATCH 0/4] add support for vNVDIMM Ian Campbell
2016-01-06 15:47 ` Haozhong Zhang
2016-01-20 3:28 ` Tian, Kevin
2016-01-20 12:43 ` Stefano Stabellini
2016-01-20 14:26 ` Zhang, Haozhong
2016-01-20 14:35 ` Stefano Stabellini
2016-01-20 14:47 ` Zhang, Haozhong
2016-01-20 14:54 ` Andrew Cooper
2016-01-20 15:59 ` Haozhong Zhang
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