From: "Wu, Feng" <feng.wu@intel.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"keir@xen.org" <keir@xen.org>,
"george.dunlap@eu.citrix.com" <george.dunlap@eu.citrix.com>,
"andrew.cooper3@citrix.com" <andrew.cooper3@citrix.com>,
"dario.faggioli@citrix.com" <dario.faggioli@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
"Wu, Feng" <feng.wu@intel.com>
Subject: Re: [PATCH v2 2/4] VMX: Cleanup PI per-cpu blocking list when vcpu is destroyed
Date: Tue, 31 May 2016 10:22:48 +0000 [thread overview]
Message-ID: <E959C4978C3B6342920538CF579893F0197009ED@SHSMSX103.ccr.corp.intel.com> (raw)
In-Reply-To: <57486C8202000078000EF3E6@prv-mh.provo.novell.com>
> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@suse.com]
> Sent: Friday, May 27, 2016 9:49 PM
> To: Wu, Feng <feng.wu@intel.com>
> Cc: andrew.cooper3@citrix.com; dario.faggioli@citrix.com;
> george.dunlap@eu.citrix.com; Tian, Kevin <kevin.tian@intel.com>; xen-
> devel@lists.xen.org; konrad.wilk@oracle.com; keir@xen.org
> Subject: Re: [PATCH v2 2/4] VMX: Cleanup PI per-cpu blocking list when vcpu is
> destroyed
>
> >>> On 26.05.16 at 15:39, <feng.wu@intel.com> wrote:
> > --- a/xen/arch/x86/hvm/vmx/vmx.c
> > +++ b/xen/arch/x86/hvm/vmx/vmx.c
> > @@ -366,6 +366,7 @@ static void vmx_vcpu_destroy(struct vcpu *v)
> > vmx_destroy_vmcs(v);
> > vpmu_destroy(v);
> > passive_domain_destroy(v);
> > + vmx_pi_blocking_cleanup(v);
> > }
>
> Isn't this redundant with the cleanup done when the last device
> gets removed (via pci_release_devices()) during domain cleanup?
We need to handle the following two cases:
- the last device gets removed (via 'xl pci-detach ...'), and the guest
is running after that. The logical in vmx_pi_hooks_deassign() cover
this case.
- the guest is shutting down. It is covered here.
Thanks,
Feng
>
> Jan
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next prev parent reply other threads:[~2016-05-31 10:22 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-26 13:39 [PATCH v2 0/4] VMX: Properly handle pi descriptor and per-cpu blocking list Feng Wu
2016-05-26 13:39 ` [PATCH v2 1/4] VMX: Properly handle pi when all the assigned devices are removed Feng Wu
2016-05-27 13:43 ` Jan Beulich
2016-05-31 10:22 ` Wu, Feng
2016-05-31 11:52 ` Jan Beulich
2016-06-03 5:12 ` Wu, Feng
2016-06-03 9:45 ` Jan Beulich
2016-05-26 13:39 ` [PATCH v2 2/4] VMX: Cleanup PI per-cpu blocking list when vcpu is destroyed Feng Wu
2016-05-27 13:49 ` Jan Beulich
2016-05-31 10:22 ` Wu, Feng [this message]
2016-05-31 11:54 ` Jan Beulich
2016-05-26 13:39 ` [PATCH v2 3/4] VMX: Assign the right value to 'NDST' field in a concern case Feng Wu
2016-05-27 14:00 ` Jan Beulich
2016-05-31 10:27 ` Wu, Feng
2016-05-31 11:58 ` Jan Beulich
2016-06-03 5:23 ` Wu, Feng
2016-06-03 9:57 ` Jan Beulich
2016-06-22 18:00 ` George Dunlap
2016-06-24 9:08 ` Wu, Feng
2016-05-26 13:39 ` [PATCH v2 4/4] VMX: fixup PI descritpor when cpu is offline Feng Wu
2016-05-27 14:56 ` Jan Beulich
2016-05-31 10:31 ` Wu, Feng
2016-06-22 18:33 ` George Dunlap
2016-06-24 6:34 ` Wu, Feng
2016-05-26 17:20 ` [PATCH v2 0/4] VMX: Properly handle pi descriptor and per-cpu blocking list Dario Faggioli
2016-05-31 10:19 ` Wu, Feng
2016-06-22 21:33 ` Dario Faggioli
2016-06-24 6:33 ` Wu, Feng
2016-06-24 10:29 ` Dario Faggioli
2016-06-24 13:42 ` Wu, Feng
2016-06-24 13:49 ` George Dunlap
2016-06-24 14:36 ` Dario Faggioli
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