diff options
| author | Peter Xu <peterx@redhat.com> | 2018-05-02 18:47:28 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2018-05-15 20:56:51 +0200 |
| commit | a335debb35bb30ade46e0e62c0b2fbb3882c8448 (patch) | |
| tree | fd354704a9547f76c0ae2ce78f2c966a7904b245 /migration/ram.h | |
| parent | f25d42253ca137f79541f655dd915377ad596e28 (diff) | |
migration: new message MIG_RP_MSG_RECV_BITMAP
Introducing new return path message MIG_RP_MSG_RECV_BITMAP to send
received bitmap of ramblock back to source.
This is the reply message of MIG_CMD_RECV_BITMAP, it contains not only
the header (including the ramblock name), and it was appended with the
whole ramblock received bitmap on the destination side.
When the source receives such a reply message (MIG_RP_MSG_RECV_BITMAP),
it parses it, convert it to the dirty bitmap by inverting the bits.
One thing to mention is that, when we send the recv bitmap, we are doing
these things in extra:
- converting the bitmap to little endian, to support when hosts are
using different endianess on src/dst.
- do proper alignment for 8 bytes, to support when hosts are using
different word size (32/64 bits) on src/dst.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-13-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/ram.h')
| -rw-r--r-- | migration/ram.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/migration/ram.h b/migration/ram.h index 3f4b7daee8..d386f4d641 100644 --- a/migration/ram.h +++ b/migration/ram.h @@ -66,5 +66,8 @@ int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr); bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset); void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr); void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr); +int64_t ramblock_recv_bitmap_send(QEMUFile *file, + const char *block_name); +int ram_dirty_bitmap_reload(MigrationState *s, RAMBlock *rb); #endif |