On 01.11.2019 19:28, Igor Druzhinin wrote:
> This patch instead acquires the lock once for assignment (or test assign)
> operations directly in iommu_do_pci_domctl() and thus can remove the
> duplicate domain ownership check in assign_device(). Whilst in the
> neighbourhood, the patch also removes
.org
> > > Cc: Igor Druzhinin ; jgr...@suse.com;
> > > jbeul...@suse.com
> > > Subject: Re: [Xen-devel] [PATCH for-4.13 v2] passthrough: simplify
> locking
> > > and logging
> > >
> > > On 04/11/2019 08:31, Durrant, Paul wrote
suse.com
> > Subject: Re: [Xen-devel] [PATCH for-4.13 v2] passthrough: simplify locking
> > and logging
> >
> > On 04/11/2019 08:31, Durrant, Paul wrote:
> > >> -Original Message-
> > >> From: Igor Druzhinin
> > >> Sent: 0
> -Original Message-
> From: Andrew Cooper
> Sent: 04 November 2019 11:06
> To: Durrant, Paul ; xen-devel@lists.xenproject.org
> Cc: Igor Druzhinin ; jgr...@suse.com;
> jbeul...@suse.com
> Subject: Re: [Xen-devel] [PATCH for-4.13 v2] passthrough: simplify locking
>
On 04/11/2019 08:31, Durrant, Paul wrote:
>> -Original Message-
>> From: Igor Druzhinin
>> Sent: 01 November 2019 19:28
>> To: xen-devel@lists.xenproject.org
>> Cc: Durrant, Paul ; jbeul...@suse.com;
>> jgr...@suse.com
>> Subject: [PATCH for-4.13 v2] passthrough: simplify locking and
> -Original Message-
> From: Igor Druzhinin
> Sent: 01 November 2019 19:28
> To: xen-devel@lists.xenproject.org
> Cc: Durrant, Paul ; jbeul...@suse.com;
> jgr...@suse.com
> Subject: [PATCH for-4.13 v2] passthrough: simplify locking and logging
>
> From: Paul Durrant
>
> Dropping the
From: Paul Durrant
Dropping the pcidevs lock between calling device_assigned() and
assign_device() means that the latter has to do the same check as the
former for no obvious gain. Also, since long running operations under
pcidevs lock already drop the lock and return -ERESTART periodically
