diff options
Diffstat (limited to 'migration/multifd.h')
| -rw-r--r-- | migration/multifd.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/migration/multifd.h b/migration/multifd.h index 7447c2bea3..c9d9b09239 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -55,14 +55,24 @@ typedef struct { /* size of the next packet that contains pages */ uint32_t next_packet_size; uint64_t packet_num; - uint64_t unused[4]; /* Reserved for future use */ + /* zero pages */ + uint32_t zero_pages; + uint32_t unused32[1]; /* Reserved for future use */ + uint64_t unused64[3]; /* Reserved for future use */ char ramblock[256]; + /* + * This array contains the pointers to: + * - normal pages (initial normal_pages entries) + * - zero pages (following zero_pages entries) + */ uint64_t offset[]; } __attribute__((packed)) MultiFDPacket_t; typedef struct { /* number of used pages */ uint32_t num; + /* number of normal pages */ + uint32_t normal_num; /* number of allocated pages */ uint32_t allocated; /* offset of each page */ @@ -136,6 +146,8 @@ typedef struct { uint64_t packets_sent; /* non zero pages sent through this channel */ uint64_t total_normal_pages; + /* zero pages sent through this channel */ + uint64_t total_zero_pages; /* buffers to send */ struct iovec *iov; /* number of iovs used */ @@ -194,12 +206,18 @@ typedef struct { uint8_t *host; /* non zero pages recv through this channel */ uint64_t total_normal_pages; + /* zero pages recv through this channel */ + uint64_t total_zero_pages; /* buffers to recv */ struct iovec *iov; /* Pages that are not zero */ ram_addr_t *normal; /* num of non zero pages */ uint32_t normal_num; + /* Pages that are zero */ + ram_addr_t *zero; + /* num of zero pages */ + uint32_t zero_num; /* used for de-compression methods */ void *compress_data; } MultiFDRecvParams; @@ -221,6 +239,9 @@ typedef struct { void multifd_register_ops(int method, MultiFDMethods *ops); void multifd_send_fill_packet(MultiFDSendParams *p); +bool multifd_send_prepare_common(MultiFDSendParams *p); +void multifd_send_zero_page_detect(MultiFDSendParams *p); +void multifd_recv_zero_page_process(MultiFDRecvParams *p); static inline void multifd_send_prepare_header(MultiFDSendParams *p) { |