xen-devel.lists.xenproject.org archive mirror
 help / color / mirror / Atom feed
From: "Jan Beulich" <JBeulich@suse.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: kevin.tian@intel.com, andrew.cooper3@citrix.com,
	dietmar.hahn@ts.fujitsu.com, xen-devel@lists.xen.org,
	Aravind.Gopalakrishnan@amd.com, suravee.suthikulpanit@amd.com,
	dgdegra@tycho.nsa.gov
Subject: Re: [PATCH v25 12/15] x86/VPMU: Handle PMU interrupts for PV(H) guests
Date: Mon, 22 Jun 2015 16:20:26 +0100	[thread overview]
Message-ID: <558843DA0200007800087AC9@mail.emea.novell.com> (raw)
In-Reply-To: <1434739486-1611-13-git-send-email-boris.ostrovsky@oracle.com>

>>> On 19.06.15 at 20:44, <boris.ostrovsky@oracle.com> wrote:
> Add support for handling PMU interrupts for PV(H) guests.
> 
> VPMU for the interrupted VCPU is unloaded until the guest issues 
> XENPMU_flush
> hypercall. This allows the guest to access PMU MSR values that are stored in
> VPMU context which is shared between hypervisor and domain, thus avoiding
> traps to hypervisor.
> 
> Since the interrupt handler may now force VPMU context save (i.e. set
> VPMU_CONTEXT_SAVE flag) we need to make changes to amd_vpmu_save() which
> until now expected this flag to be set only when the counters were stopped.
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
> Acked-by: Kevin Tian <kevin.tian@intel.com>

Acked-by: Jan Beulich <jbeulich@suse.com>

  reply	other threads:[~2015-06-22 15:20 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-19 18:44 [PATCH v25 00/15] x86/PMU: Xen PMU PV(H) support Boris Ostrovsky
2015-06-19 18:44 ` [PATCH v25 01/15] common/symbols: Export hypervisor symbols to privileged guest Boris Ostrovsky
2015-06-19 18:44 ` [PATCH v25 02/15] x86/VPMU: Add public xenpmu.h Boris Ostrovsky
2015-06-19 18:44 ` [PATCH v25 03/15] x86/VPMU: Make vpmu not HVM-specific Boris Ostrovsky
2015-06-19 18:44 ` [PATCH v25 04/15] x86/VPMU: Interface for setting PMU mode and flags Boris Ostrovsky
2015-06-22 15:10   ` Jan Beulich
2015-06-22 16:10     ` Boris Ostrovsky
2015-06-23  8:26       ` Jan Beulich
2015-06-24  2:17         ` Boris Ostrovsky
2015-07-07  7:16   ` Dietmar Hahn
2015-07-09  1:27   ` Tian, Kevin
2015-06-19 18:44 ` [PATCH v25 05/15] x86/VPMU: Initialize VPMUs with __initcall Boris Ostrovsky
2015-07-08 11:48   ` Dietmar Hahn
2015-07-09  6:04   ` Tian, Kevin
2015-06-19 18:44 ` [PATCH v25 06/15] x86/VPMU: Initialize PMU for PV(H) guests Boris Ostrovsky
2015-07-08 12:20   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 07/15] x86/VPMU: Save VPMU state for PV guests during context switch Boris Ostrovsky
2015-06-22 15:14   ` Jan Beulich
2015-07-08  5:51   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 08/15] x86/VPMU: When handling MSR accesses, leave fault injection to callers Boris Ostrovsky
2015-07-08  6:11   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 09/15] x86/VPMU: Add support for PMU register handling on PV guests Boris Ostrovsky
2015-06-19 18:44 ` [PATCH v25 10/15] x86/VPMU: Use pre-computed masks when checking validity of MSRs Boris Ostrovsky
2015-07-08  6:49   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 11/15] VPMU/AMD: Check MSR values before writing to hardware Boris Ostrovsky
2015-07-08 15:35   ` Aravind Gopalakrishnan
2015-06-19 18:44 ` [PATCH v25 12/15] x86/VPMU: Handle PMU interrupts for PV(H) guests Boris Ostrovsky
2015-06-22 15:20   ` Jan Beulich [this message]
2015-07-09 12:19   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 13/15] x86/VPMU: Merge vpmu_rdmsr and vpmu_wrmsr Boris Ostrovsky
2015-07-09  6:13   ` Tian, Kevin
2015-06-19 18:44 ` [PATCH v25 14/15] x86/VPMU: Add privileged PMU mode Boris Ostrovsky
2015-07-09  6:13   ` Tian, Kevin
2015-07-09 12:38   ` Dietmar Hahn
2015-06-19 18:44 ` [PATCH v25 15/15] x86/VPMU: Move VPMU files up from hvm/ directory Boris Ostrovsky
2015-07-08  8:03 ` [PATCH v25 00/15] x86/PMU: Xen PMU PV(H) support Jan Beulich
2015-07-10  9:13 ` Dietmar Hahn

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=558843DA0200007800087AC9@mail.emea.novell.com \
    --to=jbeulich@suse.com \
    --cc=Aravind.Gopalakrishnan@amd.com \
    --cc=andrew.cooper3@citrix.com \
    --cc=boris.ostrovsky@oracle.com \
    --cc=dgdegra@tycho.nsa.gov \
    --cc=dietmar.hahn@ts.fujitsu.com \
    --cc=kevin.tian@intel.com \
    --cc=suravee.suthikulpanit@amd.com \
    --cc=xen-devel@lists.xen.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).