Hi,
On 23/09/2020 23:57, Stefano Stabellini wrote:
On Mon, 21 Sep 2020, Julien Grall wrote:
On 21/09/2020 13:55, Durrant, Paul wrote:
(+ Xen-devel)
Sorry I forgot to CC xen-devel.
On 21/09/2020 12:38, Julien Grall wrote:
Hi all,
I have started to look at the deferral code (see
On Mon, 21 Sep 2020, Julien Grall wrote:
> On 21/09/2020 13:55, Durrant, Paul wrote:
> > > (+ Xen-devel)
> > >
> > > Sorry I forgot to CC xen-devel.
> > >
> > > On 21/09/2020 12:38, Julien Grall wrote:
> > > > Hi all,
> > > >
> > > > I have started to look at the deferral code (see
> > > >
Hi Jan,
On 21/09/2020 14:11, Jan Beulich wrote:
On 21.09.2020 13:40, Julien Grall wrote:
(+ Xen-devel)
Sorry I forgot to CC xen-devel.
On 21/09/2020 12:38, Julien Grall wrote:
Hi all,
I have started to look at the deferral code (see
vcpu_start_shutdown_deferral()) because we need it for
On 21.09.2020 15:35, Durrant, Paul wrote:
>> From: Jan Beulich
>> Sent: 21 September 2020 14:32
>>
>> On 21.09.2020 15:27, Julien Grall wrote:
>>> I think this part is racy at least on non-x86 platform as x86 seems to
>>> implement smp_mb() with a strong memory barrier (mfence).
>>
>> The
> -Original Message-
> From: Jan Beulich
> Sent: 21 September 2020 14:32
> To: Julien Grall
> Cc: Durrant, Paul ; Stefano Stabellini
> ;
> andrew.coop...@citrix.com; George Dunlap ; Xia,
> Hongyan
> ; xen-devel@lists.xenproject.org
> Subject: RE: [EXTE
On 21.09.2020 15:27, Julien Grall wrote:
> I think this part is racy at least on non-x86 platform as x86 seems to
> implement smp_mb() with a strong memory barrier (mfence).
The "strength" of the memory barrier doesn't matter here imo. It's
the fully coherent memory model (for WB type memory)
ge Dunlap
> > ; Durrant, Paul
> >
> > Cc: Xia, Hongyan ;
> > xen-devel@lists.xenproject.org
> > Subject: RE: [EXTERNAL] Memory ordering question in the shutdown
> > deferral code
> >
> > CAUTION: This email originated from outside of the organization.
] Memory ordering question in the shutdown deferral code
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(+ Xen-devel)
Sorry I forgot to CC xen-devel.
On 21/09/2020 12:38
On 21.09.2020 13:40, Julien Grall wrote:
> (+ Xen-devel)
>
> Sorry I forgot to CC xen-devel.
>
> On 21/09/2020 12:38, Julien Grall wrote:
>> Hi all,
>>
>> I have started to look at the deferral code (see
>> vcpu_start_shutdown_deferral()) because we need it for LiveUpdate and
>> Arm will soon
> -Original Message-
> From: Julien Grall
> Sent: 21 September 2020 12:41
> To: Jan Beulich ; Stefano Stabellini
> ;
> andrew.coop...@citrix.com; George Dunlap ; Durrant,
> Paul
>
> Cc: Xia, Hongyan ; xen-devel@lists.xenproject.org
> Subject: RE: [EXTE
(+ Xen-devel)
Sorry I forgot to CC xen-devel.
On 21/09/2020 12:38, Julien Grall wrote:
Hi all,
I have started to look at the deferral code (see
vcpu_start_shutdown_deferral()) because we need it for LiveUpdate and
Arm will soon use it.
The current implementation is using an smp_mb() to
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