search for: virtio_balloon_miscq_hdr

...legated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -94,6 +95,19 @@ struct virtio_balloon { struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; struct virtio_balloon_page_chunk *balloon_page_chunk; + /* + * Buffer for PAGE_CHUNK_TYPE_UNUSED: + * virtio_balloon_miscq_hdr + + * virtio_balloon_page_chunk_hdr + + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS + */ + struct virtio_balloon_miscq_hdr *miscq_out_hdr; + struct virtio_balloon_page_chunk_hdr *unused_page_chunk_hdr; + struct virtio_balloon_page_chunk *unused_page_chunk; + + /* Buffer for host to send cmd to...

...; struct work_struct update_balloon_stats_work; > @@ -94,6 +95,19 @@ struct virtio_balloon { > struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > struct virtio_balloon_page_chunk *balloon_page_chunk; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_UNUSED: > + * virtio_balloon_miscq_hdr + > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > + struct virtio_balloon_miscq_hdr *miscq_out_hdr; > + struct virtio_balloon_page_chunk_hdr *unused_page_chunk_hdr; > + struct virtio_balloon_page_chunk *unused_page_chunk; > +...

...; struct work_struct update_balloon_stats_work; > @@ -94,6 +95,19 @@ struct virtio_balloon { > struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > struct virtio_balloon_page_chunk *balloon_page_chunk; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_UNUSED: > + * virtio_balloon_miscq_hdr + > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > + struct virtio_balloon_miscq_hdr *miscq_out_hdr; > + struct virtio_balloon_page_chunk_hdr *unused_page_chunk_hdr; > + struct virtio_balloon_page_chunk *unused_page_chunk; > +...

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

...two message formats and then it'll all be easier? > Yes, it'll be simple with only one msg format. But the problem I see here is that miscq hdr is something necessary for the "unused page" usage, but not needed by the "balloon page" usage. To be more precise, struct virtio_balloon_miscq_hdr { __le16 cmd; __le16 flags; }; 'cmd' specifies the command from the miscq (I envision that miscq will be further used to handle other possible miscellaneous requests either from the host or to the host), so 'cmd' is necessary for the miscq. But the inflateq is exclusively used...

...it'll all be easier? > > > > Yes, it'll be simple with only one msg format. But the problem I see here is that > miscq hdr is something necessary for the "unused page" > usage, but not needed by the "balloon page" usage. To be more precise, struct > virtio_balloon_miscq_hdr { > __le16 cmd; > __le16 flags; > }; > 'cmd' specifies the command from the miscq (I envision that miscq will be > further used to handle other possible miscellaneous requests either from the > host or to the host), so 'cmd' is necessary for the miscq. But the...

...it'll all be easier? > > > > Yes, it'll be simple with only one msg format. But the problem I see here is that > miscq hdr is something necessary for the "unused page" > usage, but not needed by the "balloon page" usage. To be more precise, struct > virtio_balloon_miscq_hdr { > __le16 cmd; > __le16 flags; > }; > 'cmd' specifies the command from the miscq (I envision that miscq will be > further used to handle other possible miscellaneous requests either from the > host or to the host), so 'cmd' is necessary for the miscq. But the...

On Fri, Apr 14, 2017 at 04:37:52PM +0800, Wei Wang wrote: > On 04/14/2017 12:34 AM, Michael S. Tsirkin wrote: > > On Thu, Apr 13, 2017 at 05:35:05PM +0800, Wei Wang wrote: > > > > So we don't need the bitmap to talk to host, it is just > > a data structure we chose to maintain lists of pages, right? > Right. bitmap is the way to gather pages to chunk. >

On Fri, Apr 14, 2017 at 04:37:52PM +0800, Wei Wang wrote: > On 04/14/2017 12:34 AM, Michael S. Tsirkin wrote: > > On Thu, Apr 13, 2017 at 05:35:05PM +0800, Wei Wang wrote: > > > > So we don't need the bitmap to talk to host, it is just > > a data structure we chose to maintain lists of pages, right? > Right. bitmap is the way to gather pages to chunk. >