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[Qemu-devel] [PATCH 01/15] migration: remove last_sent_block from save_p
From: |
Liang Li |
Subject: |
[Qemu-devel] [PATCH 01/15] migration: remove last_sent_block from save_page_header |
Date: |
Mon, 23 Mar 2015 16:28:58 +0800 |
From: Juan Quintela <address@hidden>
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 <address@hidden>
---
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
- [Qemu-devel] [PATCH 01/15] migration: remove last_sent_block from save_page_header,
Liang Li <=