search for: this_pfn

...goto out; > } > > + cur_base = msg->uaddr & PAGE_MASK; > iova &= PAGE_MASK; > - map_pfn = page_to_pfn(page_list[0]); > - > - /* One more iteration to avoid extra vdpa_map() call out of loop. */ > - for (i = 0; i <= npages; i++) { > - unsigned long this_pfn; > - u64 csize; > - > - /* The last chunk may have no valid PFN next to it */ > - this_pfn = i < npages ? page_to_pfn(page_list[i]) : -1UL; > - > - if (last_pfn && (this_pfn == -1UL || > - this_pfn != last_pfn + 1)) { > - /* Pin a contiguous chunk of mem...

...ile (npages) { - pinned = min_t(unsigned long, npages, list_size); - ret = pin_user_pages(cur_base, pinned, - gup_flags, page_list, NULL); - if (ret != pinned) - goto out; - - if (!last_pfn) - map_pfn = page_to_pfn(page_list[0]); - - for (i = 0; i < ret; i++) { - unsigned long this_pfn = page_to_pfn(page_list[i]); - u64 csize; - - if (last_pfn && (this_pfn != last_pfn + 1)) { - /* Pin a contiguous chunk of memory */ - csize = (last_pfn - map_pfn + 1) << PAGE_SHIFT; - if (vhost_vdpa_map(v, iova, csize, - map_pfn << PAGE_SHIFT, - msg...

...ile (npages) { - pinned = min_t(unsigned long, npages, list_size); - ret = pin_user_pages(cur_base, pinned, - gup_flags, page_list, NULL); - if (ret != pinned) - goto out; - - if (!last_pfn) - map_pfn = page_to_pfn(page_list[0]); - - for (i = 0; i < ret; i++) { - unsigned long this_pfn = page_to_pfn(page_list[i]); - u64 csize; - - if (last_pfn && (this_pfn != last_pfn + 1)) { - /* Pin a contiguous chunk of memory */ - csize = (last_pfn - map_pfn + 1) << PAGE_SHIFT; - if (vhost_vdpa_map(v, iova, csize, - map_pfn << PAGE_SHIFT, - msg...

..._start < pfn_max) { + pfn_end = pfn_start + + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; + clear_page_bmap(vb, page_bmap_num); + found = false; + + list_for_each_entry(page, pages, lru) { + unsigned long bmap_idx, bmap_pos, this_pfn; + + this_pfn = page_to_pfn(page); + if (this_pfn < pfn_start || this_pfn > pfn_end) + continue; + bmap_idx = (this_pfn - pfn_start) / + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; + bmap_pos = (this_pfn - pfn_start) % + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; + set_bit(bmap_pos, v...

...pfn_start + > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; > + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; > + clear_page_bmap(vb, page_bmap_num); > + found = false; > + > + list_for_each_entry(page, pages, lru) { > + unsigned long bmap_idx, bmap_pos, this_pfn; > + > + this_pfn = page_to_pfn(page); > + if (this_pfn < pfn_start || this_pfn > pfn_end) > + continue; > + bmap_idx = (this_pfn - pfn_start) / > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; > + bmap_pos = (this_pfn - pfn_start) % > + VIRTIO_BALLOON_PFN...

...pfn_start + > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; > + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; > + clear_page_bmap(vb, page_bmap_num); > + found = false; > + > + list_for_each_entry(page, pages, lru) { > + unsigned long bmap_idx, bmap_pos, this_pfn; > + > + this_pfn = page_to_pfn(page); > + if (this_pfn < pfn_start || this_pfn > pfn_end) > + continue; > + bmap_idx = (this_pfn - pfn_start) / > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; > + bmap_pos = (this_pfn - pfn_start) % > + VIRTIO_BALLOON_PFN...

..._start < pfn_max) { + pfn_end = pfn_start + + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; + clear_page_bmap(vb, page_bmap_num); + found = false; + + list_for_each_entry(page, pages, lru) { + unsigned long bmap_idx, bmap_pos, this_pfn; + + this_pfn = page_to_pfn(page); + if (this_pfn < pfn_start || this_pfn > pfn_end) + continue; + bmap_idx = (this_pfn - pfn_start) / + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; + bmap_pos = (this_pfn - pfn_start) % + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; + set_bit(bmap_pos, +...

This patch series implements the follow two things: 1) Optimization of balloon page transfer: instead of transferring balloon pages to host one by one, the new mechanism transfers them in chunks. 2) A mechanism to report info of guest unused pages: the pages have been unused at some time between when host sent command and when guest reported them. Host uses that by tracking memory changes and

This patch series implements the follow two things: 1) Optimization of balloon page transfer: instead of transferring balloon pages to host one by one, the new mechanism transfers them in chunks. 2) A mechanism to report info of guest unused pages: the pages have been unused at some time between when host sent command and when guest reported them. Host uses that by tracking memory changes and

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages. Liang Li

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages. Liang Li

...pfn_start + > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; > + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; > + clear_page_bmap(vb, page_bmap_num); > + found = false; > + > + list_for_each_entry(page, pages, lru) { > + unsigned long bmap_idx, bmap_pos, this_pfn; > + > + this_pfn = page_to_pfn(page); > + if (this_pfn < pfn_start || this_pfn > pfn_end) > + continue; > + bmap_idx = (this_pfn - pfn_start) / > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; > + bmap_pos = (this_pfn - pfn_start) % > + VIRTIO_BALLOON_PFN...

...pfn_start + > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP * page_bmap_num; > + pfn_end = pfn_end < pfn_max ? pfn_end : pfn_max; > + clear_page_bmap(vb, page_bmap_num); > + found = false; > + > + list_for_each_entry(page, pages, lru) { > + unsigned long bmap_idx, bmap_pos, this_pfn; > + > + this_pfn = page_to_pfn(page); > + if (this_pfn < pfn_start || this_pfn > pfn_end) > + continue; > + bmap_idx = (this_pfn - pfn_start) / > + VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP; > + bmap_pos = (this_pfn - pfn_start) % > + VIRTIO_BALLOON_PFN...

Hi All: This series tries to add the support for control virtqueue in vDPA. Control virtqueue is used by networking device for accepting various commands from the driver. It's a must to support multiqueue and other configurations. When used by vhost-vDPA bus driver for VM, the control virtqueue should be shadowed via userspace VMM (Qemu) instead of being assigned directly to Guest. This is

Hi All: This series tries to add the support for control virtqueue in vDPA. Control virtqueue is used by networking device for accepting various commands from the driver. It's a must to support multiqueue and other configurations. When used by vhost-vDPA bus driver for VM, the control virtqueue should be shadowed via userspace VMM (Qemu) instead of being assigned directly to Guest. This is