; Konrad Rzeszutek Wilk
> ; Tim
> (Xen.org)
> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>
> >>> On 18.03.19 at 18:06, wrote:
> >> -Original Message-
> >> From: Jan Beulich [mailto:jbeul...@s
r Pau
> Monne
>> ; Wei Liu ; Stefano Stabellini
> ;
>> xen-devel ; Konrad Rzeszutek Wilk
> ; Tim
>> (Xen.org)
>> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>>
>> >>> On 18.03.19 at 17:26, wro
; Konrad Rzeszutek Wilk
> ; Tim
> (Xen.org)
> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>
> >>> On 18.03.19 at 17:26, wrote:
> >> From: Jan Beulich [mailto:jbeul...@suse.com]
>
>>> On 18.03.19 at 17:26, wrote:
>> From: Jan Beulich [mailto:jbeul...@suse.com]
>> Sent: 18 March 2019 16:23
>>
>> >>> On 18.03.19 at 16:46, wrote:
>> >> > > +{
>> >> > > +expiration = vs->count;
>> >> > > +if ( expiration - now <= 0 )
>> >> > > +{
>> >> > > +
; Konrad Rzeszutek Wilk
> ; Tim
> (Xen.org)
> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>
> >>> On 18.03.19 at 16:46, wrote:
> >> > > +{
> >> > > +expiration = vs->count
>>> On 18.03.19 at 16:46, wrote:
>> > > +{
>> > > +expiration = vs->count;
>> > > +if ( expiration - now <= 0 )
>> > > +{
>> > > +vs->expiration = expiration;
>> > > +stimer_expire(vs);
>> >
>> > Aren't you introducing a risk for races by calling
>>> On 18.03.19 at 16:36, wrote:
>> From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behalf Of
>> Jan Beulich
>> Sent: 18 March 2019 15:21
>>
>> >>> On 18.03.19 at 15:37, wrote:
>> >> From: Jan Beulich [mailto:jbeul...@suse.com]
>> >> Sent: 18 March 2019 14:24
>> >>
>> >> >>>
> -Original Message-
[snip]
> > > +{
> > > +expiration = vs->count;
> > > +if ( expiration - now <= 0 )
> > > +{
> > > +vs->expiration = expiration;
> > > +stimer_expire(vs);
> >
> > Aren't you introducing a risk for races by calling the t
;
> George Dunlap ; Julien Grall
> ; xen-devel de...@lists.xenproject.org>; Ian Jackson ; Roger Pau
> Monne
>
> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>
> >>> On 18.03.19 at 15:37, wrote:
> >>
>>> On 18.03.19 at 15:37, wrote:
>> From: Jan Beulich [mailto:jbeul...@suse.com]
>> Sent: 18 March 2019 14:24
>>
>> >>> On 18.03.19 at 12:20, wrote:
>> > @@ -72,11 +77,14 @@ static void update_reference_tsc(struct domain *d,
>> > bool initialize)
>> > * ticks per 100ns shifted left by 64.
el de...@lists.xenproject.org>; Konrad Rzeszutek Wilk ;
> Tim (Xen.org)
>
> Subject: Re: [Xen-devel] [PATCH v8 10/11] viridian: add implementation of
> synthetic timers
>
> >>> On 18.03.19 at 12:20, wrote:
> > @@ -72,11 +77,14 @@ static void update_reference_tsc(s
>>> On 18.03.19 at 12:20, wrote:
> @@ -72,11 +77,14 @@ static void update_reference_tsc(struct domain *d, bool
> initialize)
> * ticks per 100ns shifted left by 64.
> */
> p->TscScale = ((1ul << 32) / d->arch.tsc_khz) << 32;
> +smp_wmb();
> +
> +seq = p->TscSequence +
This patch introduces an implementation of the STIMER0-15_CONFIG/COUNT MSRs
and hence a the first SynIC message source.
The new (and documented) 'stimer' viridian enlightenment group may be
specified to enable this feature.
While in the neighbourhood, this patch adds a missing check for an
attemp
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