diff options
| author | Alexander Duyck <alexander.h.duyck@linux.intel.com> | 2020-05-26 21:14:07 -0700 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-06-09 14:18:04 -0400 |
| commit | 91b867191ddf73c64f51ca2ddb489b922ed4058e (patch) | |
| tree | 76ee97d9fcf00bde8e5f8af94c1cabc56e0e4179 /include/hw/virtio/virtio-balloon.h | |
| parent | 7483cbbaf8204de330b7362339a4a070b114b425 (diff) | |
virtio-balloon: Provide an interface for free page reporting
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 the guest when it is
read or written to.
This provides a new way of letting the guest proactively report free
pages to the hypervisor, so the hypervisor can reuse them. In contrast to
inflate/deflate that is triggered via the hypervisor explicitly.
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Message-Id: <20200527041407.12700.73735.stgit@localhost.localdomain>
Diffstat (limited to 'include/hw/virtio/virtio-balloon.h')
| -rw-r--r-- | include/hw/virtio/virtio-balloon.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/hw/virtio/virtio-balloon.h b/include/hw/virtio/virtio-balloon.h index 7fe78e5c14..d49fef00ce 100644 --- a/include/hw/virtio/virtio-balloon.h +++ b/include/hw/virtio/virtio-balloon.h @@ -42,7 +42,7 @@ enum virtio_balloon_free_page_report_status { typedef struct VirtIOBalloon { VirtIODevice parent_obj; - VirtQueue *ivq, *dvq, *svq, *free_page_vq; + VirtQueue *ivq, *dvq, *svq, *free_page_vq, *reporting_vq; uint32_t free_page_report_status; uint32_t num_pages; uint32_t actual; |