From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Jan Beulich <JBeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v6 18/29] xen/x86: allow disabling the emulated pmu
Date: Fri, 25 Sep 2015 17:07:40 +0200 [thread overview]
Message-ID: <5605633C.8000708@citrix.com> (raw)
In-Reply-To: <560018C7.9040004@oracle.com>
El 21/09/15 a les 16.48, Boris Ostrovsky ha escrit:
> On 09/21/2015 10:36 AM, Jan Beulich wrote:
>>>>> On 04.09.15 at 14:08, <roger.pau@citrix.com> wrote:
>> Hmm - this seems questionable to me: Isn't the vPMU an optional
>> feature anyway? I.e. doesn't need separate handling here? Boris?
>
> It is optional system-wise, not per-guest, which is what I think Roger
> is trying to do. I in fact wanted to add ability to disable VPMU per
> guest myself.
>
> However, VPMU has nothing to do with device model so I don't think it
> should be part of this series from that perspective.
vpmu is enabled globally on the xen command line, there's no way to
disable it on a per-guest basis, so AFAICS it will be enabled for
HMVlite guests which is wrong because we don't have a vlapic.
IMHO, there's no need to add a flag to specifically disable the vpmu, we
can just decide whether to enable it based on vlapic presence and the
global vpmu flag.
Roger.
next prev parent reply other threads:[~2015-09-25 15:07 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-04 12:08 [PATCH v6 00/29] Introduce HVM without dm and new boot ABI Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 01/29] libxc: split x86 HVM setup_guest into smaller logical functions Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 02/29] libxc: unify xc_dom_p2m_{host/guest} Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 03/29] libxc: introduce the notion of a container type Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 04/29] libxc: introduce a domain loader for HVM guest firmware Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 05/29] libxc: make arch_setup_meminit a xc_dom_arch hook Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 06/29] libxc: make arch_setup_boot{init/late} xc_dom_arch hooks Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 07/29] libxc: rework BSP initialization Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 08/29] libxc: introduce a xc_dom_arch for hvm-3.0-x86_32 guests Roger Pau Monne
2015-09-18 15:53 ` Anthony PERARD
2015-09-23 10:32 ` Roger Pau Monné
2015-09-04 12:08 ` [PATCH v6 09/29] libxl: switch HVM domain building to use xc_dom_* helpers Roger Pau Monne
2015-09-18 15:53 ` Anthony PERARD
2015-09-23 10:38 ` Roger Pau Monné
2015-09-04 12:08 ` [PATCH v6 10/29] libxc: remove dead HVM building code Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 11/29] xen/x86: add bitmap of enabled emulated devices Roger Pau Monne
2015-09-04 12:25 ` Wei Liu
2015-09-04 13:51 ` Roger Pau Monné
2015-09-04 13:55 ` Jan Beulich
2015-09-04 22:41 ` Andrew Cooper
2015-09-23 11:43 ` Roger Pau Monné
2015-09-04 13:56 ` Wei Liu
2015-09-09 14:27 ` Wei Liu
2015-09-16 9:50 ` Jan Beulich
2015-09-23 12:35 ` Roger Pau Monné
2015-09-23 13:24 ` Jan Beulich
2015-09-23 15:02 ` Roger Pau Monné
2015-09-16 10:10 ` Jan Beulich
2015-09-23 12:42 ` Roger Pau Monné
2015-09-23 12:46 ` Andrew Cooper
2015-09-04 12:08 ` [PATCH v6 12/29] xen/x86: allow disabling the emulated local apic Roger Pau Monne
2015-09-16 10:05 ` Jan Beulich
2015-09-23 15:45 ` Roger Pau Monné
2015-09-24 7:57 ` Jan Beulich
2015-09-25 9:00 ` Roger Pau Monné
2015-09-04 12:08 ` [PATCH v6 13/29] xen/x86: allow disabling the emulated HPET Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 14/29] xen/x86: allow disabling the pmtimer Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 15/29] xen/x86: allow disabling the emulated RTC Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 16/29] xen/x86: allow disabling the emulated IO APIC Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 17/29] xen/x86: allow disabling the emulated PIC Roger Pau Monne
2015-09-21 14:34 ` Jan Beulich
2015-09-25 15:01 ` Roger Pau Monné
2015-09-04 12:08 ` [PATCH v6 18/29] xen/x86: allow disabling the emulated pmu Roger Pau Monne
2015-09-21 14:36 ` Jan Beulich
2015-09-21 14:48 ` Boris Ostrovsky
2015-09-25 15:07 ` Roger Pau Monné [this message]
2015-09-25 15:13 ` Jan Beulich
2015-09-25 15:22 ` Roger Pau Monné
2015-09-25 15:41 ` Boris Ostrovsky
2015-09-04 12:08 ` [PATCH v6 19/29] xen/x86: allow disabling the emulated VGA Roger Pau Monne
2015-09-04 12:08 ` [PATCH v6 20/29] xen/x86: allow disabling the emulated IOMMU Roger Pau Monne
2015-09-28 13:58 ` Aravind Gopalakrishnan
2015-09-04 12:09 ` [PATCH v6 21/29] xen/x86: allow disabling all emulated devices inside of Xen Roger Pau Monne
2015-09-04 12:09 ` [PATCH v6 22/29] elfnotes: intorduce a new PHYS_ENTRY elfnote Roger Pau Monne
2015-09-21 14:47 ` Jan Beulich
2015-09-28 10:35 ` Roger Pau Monné
2015-09-28 10:56 ` Jan Beulich
2015-09-28 10:59 ` Andrew Cooper
2015-09-04 12:09 ` [PATCH v6 23/29] libxc: allow creating domains without emulated devices Roger Pau Monne
2015-09-04 12:09 ` [PATCH v6 24/29] xen/x86: allow HVM guests to use hypercalls to bring up vCPUs Roger Pau Monne
2015-09-21 15:44 ` Jan Beulich
2015-09-25 15:16 ` Andrew Cooper
2015-09-25 15:52 ` Jan Beulich
2015-09-28 16:09 ` Roger Pau Monné
2015-09-29 7:09 ` Jan Beulich
2015-09-29 8:53 ` Tim Deegan
2015-09-29 10:00 ` Andrew Cooper
2015-09-29 10:07 ` Jan Beulich
2015-09-29 10:25 ` Andrew Cooper
2015-09-29 10:33 ` Jan Beulich
2015-09-29 10:37 ` Andrew Cooper
2015-09-29 10:48 ` Jan Beulich
2015-09-29 14:01 ` Roger Pau Monné
2015-09-29 15:29 ` Jan Beulich
2015-09-29 16:01 ` Roger Pau Monné
2015-09-29 16:20 ` Jan Beulich
2015-09-29 16:49 ` Roger Pau Monné
2015-09-29 16:58 ` Roger Pau Monné
2015-09-30 10:03 ` Jan Beulich
2015-09-30 11:37 ` Roger Pau Monné
2015-09-30 11:49 ` Andrew Cooper
2015-09-30 11:54 ` Jan Beulich
2015-09-30 12:19 ` Roger Pau Monné
2015-09-30 12:35 ` Jan Beulich
2015-09-30 12:50 ` Andrew Cooper
2015-09-30 15:33 ` Roger Pau Monné
2015-09-30 14:23 ` Roger Pau Monné
2015-09-30 15:41 ` Jan Beulich
2015-09-04 12:09 ` [PATCH v6 25/29] xenconsole: try to attach to PV console if HVM fails Roger Pau Monne
2015-09-04 12:09 ` [PATCH v6 26/29] libxc/xen: introduce a start info structure for HVMlite guests Roger Pau Monne
2015-09-10 16:00 ` Wei Liu
2015-09-21 15:53 ` Jan Beulich
2015-09-28 16:51 ` Roger Pau Monné
2015-09-04 12:09 ` [PATCH v6 27/29] libxc: switch xc_dom_elfloader to be used with HVMlite domains Roger Pau Monne
2015-09-04 12:09 ` [PATCH v6 28/29] libxl: allow the creation of HVM domains without a device model Roger Pau Monne
2015-09-04 12:09 ` [PATCH v6 29/29] libxl: add support for migrating HVM guests " Roger Pau Monne
2015-09-10 16:00 ` Wei Liu
2015-09-10 16:30 ` Andrew Cooper
2015-09-11 13:04 ` [PATCH v6 00/29] Introduce HVM without dm and new boot ABI Ian Campbell
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