On 06/21/2017 12:18 AM, Michael S. Tsirkin wrote:
On Fri, Jun 09, 2017 at 06:41:41PM +0800, Wei Wang wrote:
- if (!virtqueue_indirect_desc_table_add(vq, desc, num)) {
+ if (!virtqueue_indirect_desc_table_add(vq, desc, *num)) {
virtqueue_kick(vq);
-
On Tue, 2017-06-20 at 21:26 +0300, Michael S. Tsirkin wrote:
> On Tue, Jun 20, 2017 at 01:29:00PM -0400, Rik van Riel wrote:
> > I agree with that. Let me go into some more detail of
> > what Nitesh is implementing:
> >
> > 1) In arch_free_page, the being-freed page is added
> > to a per-cpu
>> IMHO even simply writing all-zeros to all free pages before starting
>> migration (or even when freeing a page) would be a cleaner interface
>> than this (because it atomically works with the entity the host cares
>> about for migration). But yes, performance is horrible that's why I am
>> not
On Tue, Jun 20, 2017 at 08:54:29PM +0200, David Hildenbrand wrote:
> On 20.06.2017 20:17, Michael S. Tsirkin wrote:
> > On Tue, Jun 20, 2017 at 06:49:33PM +0200, David Hildenbrand wrote:
> >> On 20.06.2017 18:44, Rik van Riel wrote:
> >>> On Mon, 2017-06-12 at 07:10 -0700, Dave Hansen wrote:
> >>>
On 20.06.2017 20:17, Michael S. Tsirkin wrote:
> On Tue, Jun 20, 2017 at 06:49:33PM +0200, David Hildenbrand wrote:
>> On 20.06.2017 18:44, Rik van Riel wrote:
>>> On Mon, 2017-06-12 at 07:10 -0700, Dave Hansen wrote:
>>>
The hypervisor is going to throw away the contents of these pages,
On Tue, Jun 20, 2017 at 06:49:33PM +0200, David Hildenbrand wrote:
> On 20.06.2017 18:44, Rik van Riel wrote:
> > On Mon, 2017-06-12 at 07:10 -0700, Dave Hansen wrote:
> >
> >> The hypervisor is going to throw away the contents of these pages,
> >> right? As soon as the spinlock is released,
On Tue, Jun 20, 2017 at 01:29:00PM -0400, Rik van Riel wrote:
> On Tue, 2017-06-20 at 18:49 +0200, David Hildenbrand wrote:
> > On 20.06.2017 18:44, Rik van Riel wrote:
>
> > > Nitesh Lal (on the CC list) is working on a way
> > > to efficiently batch recently freed pages for
> > > free page
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8th International Conference on Cloud Computing and Services Science
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On Tue, 2017-06-20 at 18:49 +0200, David Hildenbrand wrote:
> On 20.06.2017 18:44, Rik van Riel wrote:
> > Nitesh Lal (on the CC list) is working on a way
> > to efficiently batch recently freed pages for
> > free page hinting to the hypervisor.
> >
> > If that is done efficiently enough (eg.
On 20.06.2017 18:44, Rik van Riel wrote:
> On Mon, 2017-06-12 at 07:10 -0700, Dave Hansen wrote:
>
>> The hypervisor is going to throw away the contents of these pages,
>> right? As soon as the spinlock is released, someone can allocate a
>> page, and put good data in it. What keeps the
On Mon, 2017-06-12 at 07:10 -0700, Dave Hansen wrote:
> The hypervisor is going to throw away the contents of these pages,
> right? As soon as the spinlock is released, someone can allocate a
> page, and put good data in it. What keeps the hypervisor from
> throwing
> away good data?
That
On Fri, Jun 09, 2017 at 06:41:41PM +0800, Wei Wang wrote:
> - if (!virtqueue_indirect_desc_table_add(vq, desc, num)) {
> + if (!virtqueue_indirect_desc_table_add(vq, desc, *num)) {
> virtqueue_kick(vq);
> - wait_event(vb->acked, virtqueue_get_buf(vq, ));
> -
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