* Liang Li ([email protected]) wrote: > From: Juan Quintela <[email protected]> > > Compression code (still not on tree) want to call this funtion from > outside the migration thread, so we can't write to last_sent_block. > > Instead of reverting full patch: > > [PULL 07/11] save_block_hdr: we can recalculate > > Just revert the parts that touch last_sent_block. > > Signed-off-by: Juan Quintela <[email protected]>
Reviewed-by: Dr. David Alan Gilbert <[email protected]> > --- > arch_init.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/arch_init.c b/arch_init.c > index fcfa328..4c8fcee 100644 > --- a/arch_init.c > +++ b/arch_init.c > @@ -332,19 +332,14 @@ static size_t save_page_header(QEMUFile *f, RAMBlock > *block, ram_addr_t offset) > { > size_t size; > > - if (block == last_sent_block) { > - offset |= RAM_SAVE_FLAG_CONTINUE; > - } > - > qemu_put_be64(f, offset); > size = 8; > > - if (block != last_sent_block) { > + if (!(offset & RAM_SAVE_FLAG_CONTINUE)) { > qemu_put_byte(f, strlen(block->idstr)); > qemu_put_buffer(f, (uint8_t *)block->idstr, > strlen(block->idstr)); > size += 1 + strlen(block->idstr); > - last_sent_block = block; > } > return size; > } > @@ -644,6 +639,10 @@ static int ram_save_page(QEMUFile *f, RAMBlock* block, > ram_addr_t offset, > XBZRLE_cache_lock(); > > current_addr = block->offset + offset; > + > + if (block == last_sent_block) { > + offset |= RAM_SAVE_FLAG_CONTINUE; > + } > if (ret != RAM_SAVE_CONTROL_NOT_SUPP) { > if (ret != RAM_SAVE_CONTROL_DELAYED) { > if (bytes_xmit > 0) { > @@ -739,6 +738,7 @@ static int ram_find_and_save_block(QEMUFile *f, bool > last_stage, > > /* if page is unmodified, continue to the next */ > if (pages > 0) { > + last_sent_block = block; > break; > } > } > -- > 1.9.1 > -- Dr. David Alan Gilbert / [email protected] / Manchester, UK
