search for: skip_check

...valid + * return -ENOSPC when the buffer is too small to record all the unsed pages + * return 0 when sccess + */ +int record_unused_pages(struct zone **start_zone, int order, + __le64 *buf, unsigned int size, + unsigned int *offset, bool part_fill) +{ + struct zone *zone; + int ret = 0; + bool skip_check = false; + + /* Make sure all the parameters are valid */ + if (buf == NULL || offset == NULL || order >= MAX_ORDER) + return -EINVAL; + + if (*start_zone != NULL) { + bool found = false; + + for_each_populated_zone(zone) { + if (zone != *start_zone) + continue; + found = true; + bre...

...rameter is invalid + * return -ENOSPC when bitmap can't contain the pages + * return 0 when sccess + */ +int mark_unused_pages(struct zone **start_zone, int order, + __le64 *pages, unsigned int size, unsigned int *pos, + u8 len_bits, bool part_fill) +{ + struct zone *zone; + int ret = 0; + bool skip_check = false; + + /* make sure all the parameters are valid */ + if (pages == NULL || pos == NULL || *pos < 0 + || order >= MAX_ORDER || len_bits > 64) + return -EINVAL; + if (*start_zone != NULL) { + bool found = false; + + for_each_populated_zone(zone) { + if (zone != *start_zone) +...

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. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

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. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

...strange thing - it returns information which will instantly become incorrect. > +int record_unused_pages(struct zone **start_zone, int order, > + __le64 *buf, unsigned int size, > + unsigned int *offset, bool part_fill) > +{ > + struct zone *zone; > + int ret = 0; > + bool skip_check = false; > + > + /* Make sure all the parameters are valid */ > + if (buf == NULL || offset == NULL || order >= MAX_ORDER) > + return -EINVAL; > + > + if (*start_zone != NULL) { > + bool found = false; > + > + for_each_populated_zone(zone) { > + if (zone != *st...

...strange thing - it returns information which will instantly become incorrect. > +int record_unused_pages(struct zone **start_zone, int order, > + __le64 *buf, unsigned int size, > + unsigned int *offset, bool part_fill) > +{ > + struct zone *zone; > + int ret = 0; > + bool skip_check = false; > + > + /* Make sure all the parameters are valid */ > + if (buf == NULL || offset == NULL || order >= MAX_ORDER) > + return -EINVAL; > + > + if (*start_zone != NULL) { > + bool found = false; > + > + for_each_populated_zone(zone) { > + if (zone != *st...

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 {pfn|length} to present the page information 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 {pfn|length} to present the page information 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%.

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration