diff options
Diffstat (limited to 'arch_init.c')
| -rw-r--r-- | arch_init.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/arch_init.c b/arch_init.c index 7377a0703e..c3f7d3f56d 100644 --- a/arch_init.c +++ b/arch_init.c @@ -316,8 +316,19 @@ static uint64_t migration_dirty_pages; static uint32_t last_version; static bool ram_bulk_stage; -static size_t save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, - int flag) +/** + * save_page_header: Write page header to wire + * + * If this is the 1st block, it also writes the block identification + * + * Returns: Number of bytes written + * + * @f: QEMUFile where to send the data + * @block: block that contains the page we want to send + * @offset: offset inside the block for the page + * in the lower bits, it contains flags + */ +static size_t save_page_header(QEMUFile *f, RAMBlock *block, ram_addr_t offset) { size_t size; @@ -325,7 +336,7 @@ static size_t save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, offset |= RAM_SAVE_FLAG_CONTINUE; } - qemu_put_be64(f, offset | flag); + qemu_put_be64(f, offset); size = 8; if (block != last_sent_block) { @@ -425,7 +436,7 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t **current_data, } /* Send XBZRLE based compressed page */ - bytes_xbzrle = save_block_hdr(f, block, offset, RAM_SAVE_FLAG_XBZRLE); + bytes_xbzrle = save_page_header(f, block, offset | RAM_SAVE_FLAG_XBZRLE); qemu_put_byte(f, ENCODING_FLAG_XBZRLE); qemu_put_be16(f, encoded_len); qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len); @@ -643,8 +654,8 @@ static int ram_save_page(QEMUFile *f, RAMBlock* block, ram_addr_t offset, } } else if (is_zero_range(p, TARGET_PAGE_SIZE)) { acct_info.dup_pages++; - *bytes_transferred += save_block_hdr(f, block, offset, - RAM_SAVE_FLAG_COMPRESS); + *bytes_transferred += save_page_header(f, block, + offset | RAM_SAVE_FLAG_COMPRESS); qemu_put_byte(f, 0); *bytes_transferred += 1; pages = 1; @@ -665,8 +676,8 @@ static int ram_save_page(QEMUFile *f, RAMBlock* block, ram_addr_t offset, /* XBZRLE overflow or normal page */ if (pages == -1) { - *bytes_transferred += save_block_hdr(f, block, offset, - RAM_SAVE_FLAG_PAGE); + *bytes_transferred += save_page_header(f, block, + offset | RAM_SAVE_FLAG_PAGE); if (send_async) { qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE); } else { |