Restart optimization on stage3 update version
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
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parent
f36d55af74
commit
dd051c7217
16
arch_init.c
16
arch_init.c
@ -275,14 +275,16 @@ static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
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static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
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ram_addr_t current_addr, RAMBlock *block,
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ram_addr_t offset, int cont)
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ram_addr_t offset, int cont, bool last_stage)
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{
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int encoded_len = 0, bytes_sent = -1;
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uint8_t *prev_cached_page;
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if (!cache_is_cached(XBZRLE.cache, current_addr)) {
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if (!last_stage) {
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cache_insert(XBZRLE.cache, current_addr,
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g_memdup(current_data, TARGET_PAGE_SIZE));
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}
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acct_info.xbzrle_cache_miss++;
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return -1;
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}
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@ -308,7 +310,9 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
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}
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/* we need to update the data in the cache, in order to get the same data */
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if (!last_stage) {
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memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);
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}
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/* Send XBZRLE based compressed page */
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save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
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@ -333,7 +337,7 @@ static ram_addr_t last_offset;
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* n: the amount of bytes written in other case
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*/
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static int ram_save_block(QEMUFile *f)
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static int ram_save_block(QEMUFile *f, bool last_stage)
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{
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RAMBlock *block = last_block;
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ram_addr_t offset = last_offset;
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@ -364,9 +368,11 @@ static int ram_save_block(QEMUFile *f)
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} else if (migrate_use_xbzrle()) {
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current_addr = block->offset + offset;
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bytes_sent = save_xbzrle_page(f, p, current_addr, block,
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offset, cont);
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offset, cont, last_stage);
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if (!last_stage) {
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p = get_cached_data(XBZRLE.cache, current_addr);
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}
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}
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/* either we didn't send yet (we may have had XBZRLE overflow) */
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if (bytes_sent == -1) {
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@ -538,7 +544,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
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while ((ret = qemu_file_rate_limit(f)) == 0) {
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int bytes_sent;
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bytes_sent = ram_save_block(f);
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bytes_sent = ram_save_block(f, false);
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/* no more blocks to sent */
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if (bytes_sent < 0) {
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break;
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@ -600,7 +606,7 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
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while (true) {
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int bytes_sent;
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bytes_sent = ram_save_block(f);
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bytes_sent = ram_save_block(f, true);
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/* no more blocks to sent */
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if (bytes_sent < 0) {
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break;
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