diff options
Diffstat (limited to 'dump.c')
| -rw-r--r-- | dump.c | 28 |
1 files changed, 28 insertions, 0 deletions
@@ -79,6 +79,16 @@ typedef struct DumpState { uint8_t *note_buf; /* buffer for notes */ size_t note_buf_offset; /* the writing place in note_buf */ + uint32_t nr_cpus; /* number of guest's cpu */ + size_t page_size; /* guest's page size */ + uint32_t page_shift; /* guest's page shift */ + uint64_t max_mapnr; /* the biggest guest's phys-mem's number */ + size_t len_dump_bitmap; /* the size of the place used to store + dump_bitmap in vmcore */ + off_t offset_dump_bitmap; /* offset of dump_bitmap part in vmcore */ + off_t offset_page; /* offset of page part in vmcore */ + size_t num_dumpable; /* number of page that can be dumped */ + uint32_t flag_compress; /* indicate the compression format */ } DumpState; static int dump_cleanup(DumpState *s) @@ -796,6 +806,14 @@ static ram_addr_t get_start_block(DumpState *s) return -1; } +static void get_max_mapnr(DumpState *s) +{ + GuestPhysBlock *last_block; + + last_block = QTAILQ_LAST(&s->guest_phys_blocks.head, GuestPhysBlockHead); + s->max_mapnr = paddr_to_pfn(last_block->target_end, s->page_shift); +} + static int dump_init(DumpState *s, int fd, bool paging, bool has_filter, int64_t begin, int64_t length, Error **errp) { @@ -864,6 +882,16 @@ static int dump_init(DumpState *s, int fd, bool paging, bool has_filter, qemu_get_guest_simple_memory_mapping(&s->list, &s->guest_phys_blocks); } + s->nr_cpus = nr_cpus; + s->page_size = TARGET_PAGE_SIZE; + s->page_shift = ffs(s->page_size) - 1; + + get_max_mapnr(s); + + uint64_t tmp; + tmp = DIV_ROUND_UP(DIV_ROUND_UP(s->max_mapnr, CHAR_BIT), s->page_size); + s->len_dump_bitmap = tmp * s->page_size; + if (s->has_filter) { memory_mapping_filter(&s->list, s->begin, s->length); } |