Displaying 9 results from an estimated 9 matches for "hyprevisors".
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2015 Dec 17
2
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 11:52:38AM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 12:32:53PM +0200, Michael S. Tsirkin wrote:
> > +static inline void virtio_store_mb(bool weak_barriers,
> > + __virtio16 *p, __virtio16 v)
> > +{
> > +#ifdef CONFIG_SMP
> > + if (weak_barriers)
> > + smp_store_mb(*p, v);
> > + else
> > +#endif
>
2015 Dec 17
2
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 11:52:38AM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 12:32:53PM +0200, Michael S. Tsirkin wrote:
> > +static inline void virtio_store_mb(bool weak_barriers,
> > + __virtio16 *p, __virtio16 v)
> > +{
> > +#ifdef CONFIG_SMP
> > + if (weak_barriers)
> > + smp_store_mb(*p, v);
> > + else
> > +#endif
>
2012 Sep 09
2
[PATCH] virtio-spec: balloon: MUST_TELL_HOST is optional
Drivers treat MUST_TELL_HOST as optional: windows drivers do not ack it
and expect this means they can tell host *after* deflate. This was not
the intent but the documentation was not very clear on this point.
Luckily hyprevisors did not implement this feature yet so to provide
guidance for future devices make spec match drivers expectations, and
clarify that this feature only has effect if negotiated.
This is needed as recent developments in kvm (memory
region rework and the addition of vfio) finally make
it practical to i...
2012 Sep 09
2
[PATCH] virtio-spec: balloon: MUST_TELL_HOST is optional
Drivers treat MUST_TELL_HOST as optional: windows drivers do not ack it
and expect this means they can tell host *after* deflate. This was not
the intent but the documentation was not very clear on this point.
Luckily hyprevisors did not implement this feature yet so to provide
guidance for future devices make spec match drivers expectations, and
clarify that this feature only has effect if negotiated.
This is needed as recent developments in kvm (memory
region rework and the addition of vfio) finally make
it practical to i...
2015 Dec 17
0
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 03:16:20PM +0200, Michael S. Tsirkin wrote:
> On Thu, Dec 17, 2015 at 11:52:38AM +0100, Peter Zijlstra wrote:
> > On Thu, Dec 17, 2015 at 12:32:53PM +0200, Michael S. Tsirkin wrote:
> > > +static inline void virtio_store_mb(bool weak_barriers,
> > > + __virtio16 *p, __virtio16 v)
> > > +{
> > > +#ifdef CONFIG_SMP
> >
2015 Dec 17
4
[PATCH] virtio_ring: use smp_store_mb
We need a full barrier after writing out event index, using smp_store_mb
there seems better than open-coding.
As usual, we need a wrapper to account for strong barriers/non smp.
It's tempting to use this in vhost as well, for that, we'll
need a variant of smp_store_mb that works on __user pointers.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
Seems to give a speedup
2015 Dec 17
4
[PATCH] virtio_ring: use smp_store_mb
We need a full barrier after writing out event index, using smp_store_mb
there seems better than open-coding.
As usual, we need a wrapper to account for strong barriers/non smp.
It's tempting to use this in vhost as well, for that, we'll
need a variant of smp_store_mb that works on __user pointers.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
Seems to give a speedup
2015 Dec 17
3
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 02:57:26PM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 03:16:20PM +0200, Michael S. Tsirkin wrote:
> > On Thu, Dec 17, 2015 at 11:52:38AM +0100, Peter Zijlstra wrote:
> > > On Thu, Dec 17, 2015 at 12:32:53PM +0200, Michael S. Tsirkin wrote:
> > > > +static inline void virtio_store_mb(bool weak_barriers,
> > > > +
2015 Dec 17
3
[PATCH] virtio_ring: use smp_store_mb
On Thu, Dec 17, 2015 at 02:57:26PM +0100, Peter Zijlstra wrote:
> On Thu, Dec 17, 2015 at 03:16:20PM +0200, Michael S. Tsirkin wrote:
> > On Thu, Dec 17, 2015 at 11:52:38AM +0100, Peter Zijlstra wrote:
> > > On Thu, Dec 17, 2015 at 12:32:53PM +0200, Michael S. Tsirkin wrote:
> > > > +static inline void virtio_store_mb(bool weak_barriers,
> > > > +