On Wed, May 20, 2020 at 1:24 AM David Hildenbrand wrote:
>
> On 19.05.20 23:00, Alexander Duyck wrote:
> > On Tue, May 19, 2020 at 9:09 AM David Hildenbrand wrote:
[...]
>
> Let's think this through, what about this scenario:
>
> The device sets
On Tue, 26 May 2020 17:28:00 +0200
David Hildenbrand wrote:
> On 26.05.20 16:50, Alexander Duyck wrote:
> > On Tue, May 26, 2020 at 1:24 AM David Hildenbrand wrote:
> >
> >> Still wondering what to do with free page hinting ... in the meantime
> >> I'll have a look at free page reporting :)
On Tue, May 26, 2020 at 2:06 AM David Hildenbrand wrote:
>
> On 20.05.20 04:02, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Free page reporting is a feature that allows the guest to proactively
> > report unused pages to the host. By making use of this feature is is
> > possible to
On Tue, May 26, 2020 at 1:24 AM David Hildenbrand wrote:
>
> On 20.05.20 18:25, Alexander Duyck wrote:
> > On Wed, May 20, 2020 at 2:28 AM David Hildenbrand wrote:
> >>
> >> On 20.05.20 04:02, Alexander Duyck wrote:
> >>> From: Alexander Duyck
> >>>
> >>> Page poison provides a way for the
Do I need to resubmit this patch? It has been over two weeks now since
it was originally submitted, and a week and a half since I last sent
out an email following up. I'm just wondering if there is some list I
missed as I am assuming the maintainers and lists I contacted here are
correct? It looks
On 26.05.20 16:50, Alexander Duyck wrote:
> On Tue, May 26, 2020 at 1:24 AM David Hildenbrand wrote:
>>
>> On 20.05.20 18:25, Alexander Duyck wrote:
>>> On Wed, May 20, 2020 at 2:28 AM David Hildenbrand wrote:
On 20.05.20 04:02, Alexander Duyck wrote:
> From: Alexander Duyck
>
On 20.05.20 18:25, Alexander Duyck wrote:
> On Wed, May 20, 2020 at 2:28 AM David Hildenbrand wrote:
>>
>> On 20.05.20 04:02, Alexander Duyck wrote:
>>> From: Alexander Duyck
>>>
>>> Page poison provides a way for the guest to notify the host of the content
>>> expected to be found in pages when
On 20.05.20 04:02, Alexander Duyck wrote:
> From: Alexander Duyck
>
> Free page reporting is a feature that allows the guest to proactively
> report unused pages to the host. By making use of this feature is is
> possible to reduce the overall memory footprint of the guest in cases where
> some
This feature allows the guest to request a UUID from the host for a
particular virtio_gpu resource. The UUID can then be shared with other
virtio devices, to allow the other host devices to access the
virtio_gpu's corresponding host resource.
Signed-off-by: David Stevens
---
This change adds a new flavor of dma-bufs that can be used by virtio
drivers to share exported objects. A virtio dma-buf can be queried by
virtio drivers to obtain the UUID which identifies the underlying
exported object.
Signed-off-by: David Stevens
---
drivers/virtio/Makefile | 2 +-
Add support for UUID-based resource sharing mechanism to virtgpu. This
implements the new virtgpu commands and hooks them up to dma-buf's
get_uuid callback.
Signed-off-by: David Stevens
---
drivers/gpu/drm/virtio/virtgpu_drv.c | 3 +
drivers/gpu/drm/virtio/virtgpu_drv.h | 20 ++
This patchset implements the current proposal for virtio cross-device
resource sharing [1]. It will be used to import virtio resources into
the virtio-video driver currently under discussion [2]. The patch
under consideration to add support in the virtio-video driver is [3].
It uses the APIs from
On Tue, May 26, 2020 at 8:38 AM Cornelia Huck wrote:
>
> On Tue, 26 May 2020 17:28:00 +0200
> David Hildenbrand wrote:
>
> > On 26.05.20 16:50, Alexander Duyck wrote:
> > > On Tue, May 26, 2020 at 1:24 AM David Hildenbrand
> > > wrote:
>
> > >> Still wondering what to do with free page hinting
From: Alexander Duyck
We need to make certain to advertise support for page poison reporting if
we want to actually get data on if the guest will be poisoning pages.
Add a value for reporting the poison value being used if page poisoning is
enabled in the guest. With this we can determine if we
From: Alexander Duyck
Add support for free page reporting. The idea is to function very similar
to how the balloon works in that we basically end up madvising the page as
not being used. However we don't really need to bother with any deflate
type logic since the page will be faulted back into
This series provides an asynchronous means of reporting free guest pages
to QEMU through virtio-balloon so that the memory associated with those
pages can be dropped and reused by other processes and/or guests on the
host. Using this it is possible to avoid unnecessary I/O to disk and
greatly
From: Alexander Duyck
In an upcoming patch a feature named Free Page Reporting is about to be
added. In order to avoid any confusion we should drop the use of the word
'report' when referring to Free Page Hinting. So what this patch does is go
through and replace all instances of 'report' with
This patch set is meant to add documentation for balloon features that have
been recently added to the Linux kernel[1,2] and that we are currently
working on adding to QEMU[3].
Changes since RFC:
Incorporated suggestions from Cornelia Huck
Fixed a few additional spelling errors
Changes since v1:
From: Alexander Duyck
Page poison provides a way for the guest to notify the host that it is
initializing or poisoning freed pages with some specific poison value. As a
result of this we can infer a couple traits about the guest:
1. Free pages will contain a specific pattern within the guest.
From: Alexander Duyck
Free page hints allow the balloon driver to provide information on what
pages are not currently in use so that we can avoid the cost of copying
them in migration scenarios. Add a feature description for free page hints
describing basic functioning and requirements.
In
From: Alexander Duyck
Free page reporting is a feature that allows the guest to proactively
report unused pages to the host. By making use of this feature is is
possible to reduce the overall memory footprint of the guest in cases where
some significant portion of the memory is idle. Add
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