search for: virtio_balloon_f_misc_vq

...uct virtio_balloon *vb) +{ + struct scatterlist sg_in; + + sg_init_one(&sg_in, vb->miscq_in_hdr, + sizeof(struct virtio_balloon_miscq_hdr)); + if (virtqueue_add_inbuf(vb->miscq, &sg_in, 1, vb->miscq_in_hdr, + GFP_KERNEL) < 0) { + __virtio_clear_bit(vb->vdev, + VIRTIO_BALLOON_F_MISC_VQ); + dev_warn(&vb->vdev->dev, "%s: add miscq_in_hdr err\n", + __func__); + return; + } + virtqueue_kick(vb->miscq); +} + +static void miscq_send_unused_pages(struct virtio_balloon *vb) +{ + struct virtio_balloon_miscq_hdr *miscq_out_hdr = vb->miscq_out_hdr; + struct vi...

...scatterlist sg_in; > + > + sg_init_one(&sg_in, vb->miscq_in_hdr, > + sizeof(struct virtio_balloon_miscq_hdr)); > + if (virtqueue_add_inbuf(vb->miscq, &sg_in, 1, vb->miscq_in_hdr, > + GFP_KERNEL) < 0) { > + __virtio_clear_bit(vb->vdev, > + VIRTIO_BALLOON_F_MISC_VQ); > + dev_warn(&vb->vdev->dev, "%s: add miscq_in_hdr err\n", > + __func__); > + return; > + } > + virtqueue_kick(vb->miscq); > +} > + > +static void miscq_send_unused_pages(struct virtio_balloon *vb) > +{ > + struct virtio_balloon_miscq_hdr...

...scatterlist sg_in; > + > + sg_init_one(&sg_in, vb->miscq_in_hdr, > + sizeof(struct virtio_balloon_miscq_hdr)); > + if (virtqueue_add_inbuf(vb->miscq, &sg_in, 1, vb->miscq_in_hdr, > + GFP_KERNEL) < 0) { > + __virtio_clear_bit(vb->vdev, > + VIRTIO_BALLOON_F_MISC_VQ); > + dev_warn(&vb->vdev->dev, "%s: add miscq_in_hdr err\n", > + __func__); > + return; > + } > + virtqueue_kick(vb->miscq); > +} > + > +static void miscq_send_unused_pages(struct virtio_balloon *vb) > +{ > + struct virtio_balloon_miscq_hdr...

On 04/14/2017 01:08 AM, Michael S. Tsirkin wrote: > On Thu, Apr 13, 2017 at 05:35:08PM +0800, Wei Wang wrote: >> Add a new vq, miscq, to handle miscellaneous requests between the device >> and the driver. >> >> This patch implemnts the VIRTIO_BALLOON_MISCQ_INQUIRE_UNUSED_PAGES > implements > >> request sent from the device. > Commands are sent from host

On Thu, Apr 27, 2017 at 02:33:44PM +0800, Wei Wang wrote: > On 04/14/2017 01:08 AM, Michael S. Tsirkin wrote: > > On Thu, Apr 13, 2017 at 05:35:08PM +0800, Wei Wang wrote: > > > Add a new vq, miscq, to handle miscellaneous requests between the device > > > and the driver. > > > > > > This patch implemnts the VIRTIO_BALLOON_MISCQ_INQUIRE_UNUSED_PAGES

On Thu, Apr 27, 2017 at 02:33:44PM +0800, Wei Wang wrote: > On 04/14/2017 01:08 AM, Michael S. Tsirkin wrote: > > On Thu, Apr 13, 2017 at 05:35:08PM +0800, Wei Wang wrote: > > > Add a new vq, miscq, to handle miscellaneous requests between the device > > > and the driver. > > > > > > This patch implemnts the VIRTIO_BALLOON_MISCQ_INQUIRE_UNUSED_PAGES

...t;, > + "misc" }; > int err, nvqs; > > /* > * We expect two virtqueues: inflate and deflate, and > * optionally stat. > */ > - nvqs = virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; > + if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_MISC_VQ)) > + nvqs = 4; Does misc vq depend on stats vq feature then? if yes please validate that. > + else > + nvqs = virtio_has_feature(vb->vdev, > + VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; Replace that ? with else too pls. > err = vb->vdev->config->find_vqs(vb->v...

...t;, > + "misc" }; > int err, nvqs; > > /* > * We expect two virtqueues: inflate and deflate, and > * optionally stat. > */ > - nvqs = virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; > + if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_MISC_VQ)) > + nvqs = 4; Does misc vq depend on stats vq feature then? if yes please validate that. > + else > + nvqs = virtio_has_feature(vb->vdev, > + VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; Replace that ? with else too pls. > err = vb->vdev->config->find_vqs(vb->v...

...e", "deflate", "stats", + "misc" }; int err, nvqs; /* * We expect two virtqueues: inflate and deflate, and * optionally stat. */ - nvqs = virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; + if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_MISC_VQ)) + nvqs = 4; + else + nvqs = virtio_has_feature(vb->vdev, + VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; err = vb->vdev->config->find_vqs(vb->vdev, nvqs, vqs, callbacks, names); if (err) return err; @@ -543,6 +622,16 @@ static int init_vqs(struct virtio_balloon *vb) BUG();...

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 function to get the free page block. v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4) patch re-org Liang Li (1): virtio-balloon: deflate via a...

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 function to get the free page block. v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4) patch re-org Liang Li (1): virtio-balloon: deflate via a...

...under CONFIG_VIRTIO_BALLOON; 2) virtio-balloon: add virtballoon_validate(); 3) virtio-balloon: msg format change; 4) virtio-balloon: move miscq handling to a task on system_freezable_wq; 5) virtio-balloon: code cleanup. 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 function to get the free page block. v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4) patch re-org Liang Li (1): virtio-balloon: deflate via a...

...under CONFIG_VIRTIO_BALLOON; 2) virtio-balloon: add virtballoon_validate(); 3) virtio-balloon: msg format change; 4) virtio-balloon: move miscq handling to a task on system_freezable_wq; 5) virtio-balloon: code cleanup. 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 function to get the free page block. v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4) patch re-org Liang Li (1): virtio-balloon: deflate via a...

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

This patchset is for kernel and contains two parts of change to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by

This patchset is for kernel and contains two parts of change to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use bitmap to send the page information to host instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.