similar to: [PATCH v37 1/3] virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT

After 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT"), the virtio-balloon device unconditionally specifies 4 virtqueues as the argument to find_vqs(), which means that 5 MSI-X vectors are required in order to assign one vector per VQ plus one for configuration changes. However, in cases where the virtio device only provides exactly as many MSI-X vectors as required for

After 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT"), the virtio-balloon device unconditionally specifies 4 virtqueues as the argument to find_vqs(), which means that 5 MSI-X vectors are required in order to assign one vector per VQ plus one for configuration changes. However, in cases where the virtio device only provides exactly as many MSI-X vectors as required for

On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd id > to the guest via the free_page_report_cmd_id configuration register. > > As the first

On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd id > to the guest via the free_page_report_cmd_id configuration register. > > As the first

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. When the guest starts to report, the first element added to the free page vq is the cmd id given by host.

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. When the guest starts to report, the first element added to the free page vq is the cmd id given by host.

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a command to the guest via setting the VIRTIO_BALLOON_HOST_CMD_FREE_PAGE_HINT bit of the host_cmd config register. As the first step here, virtio-balloon only reports free page hints from

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free pages by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. When the guest starts to report, the first element added to the free page vq is the cmd id given by host. When

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. When the guest starts to report, the first element added to the free page vq is the cmd id given by host.

On 06/26/2018 09:37 AM, Michael S. Tsirkin wrote: > On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote: > >> @@ -326,17 +353,6 @@ static void stats_handle_request(struct virtio_balloon *vb) >> virtqueue_kick(vq); >> } >> >> -static void virtballoon_changed(struct virtio_device *vdev) >> -{ >> - struct virtio_balloon *vb = vdev->priv;

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. When the guest starts to report, the first element added to the free page vq is the cmd id given by host.

On Wed, Feb 07, 2018 at 11:01:06AM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd > id to the guest via the free_page_report_cmd_id configuration register. > > When the guest

On Fri, Apr 06, 2018 at 08:17:23PM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd > id to the guest via the free_page_report_cmd_id configuration register. > > When the guest

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the support of reporting hints of guest free pages to host via virtio-balloon. Host requests the guest to report free page hints by sending a new cmd id to the guest via the free_page_report_cmd_id configuration register. As the first step here, virtio-balloon only reports free page hints from the max order (i.e. 10) free page

On Tue, Jun 26, 2018 at 11:46:35AM +0800, Wei Wang wrote: > On 06/26/2018 09:37 AM, Michael S. Tsirkin wrote: > > On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote: > > > > > @@ -326,17 +353,6 @@ static void stats_handle_request(struct virtio_balloon *vb) > > > virtqueue_kick(vq); > > > } > > > -static void virtballoon_changed(struct

On Tue, Jun 26, 2018 at 11:46:35AM +0800, Wei Wang wrote: > On 06/26/2018 09:37 AM, Michael S. Tsirkin wrote: > > On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote: > > > > > @@ -326,17 +353,6 @@ static void stats_handle_request(struct virtio_balloon *vb) > > > virtqueue_kick(vq); > > > } > > > -static void virtballoon_changed(struct

On Thu, Jan 25, 2018 at 05:14:06PM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free pages by sending a new cmd > id to the guest via the free_page_report_cmd_id configuration register. > > When the guest

On Mon, 16 Dec 2019 15:14:29 -0800 Daniel Verkamp <dverkamp at chromium.org> wrote: > After 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT"), > the virtio-balloon device unconditionally specifies 4 virtqueues as the > argument to find_vqs(), which means that 5 MSI-X vectors are required in > order to assign one vector per VQ plus one for configuration

On Wed, Apr 04, 2018 at 12:10:03AM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd > id to the guest via the free_page_report_cmd_id configuration register. > > When the guest

On Wed, Apr 04, 2018 at 12:10:03AM +0800, Wei Wang wrote: > Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the > support of reporting hints of guest free pages to host via virtio-balloon. > > Host requests the guest to report free page hints by sending a new cmd > id to the guest via the free_page_report_cmd_id configuration register. > > When the guest