Signed-off-by: Lei Li <li...@linux.vnet.ibm.com> --- arch_init.c | 13 +++++++++++++ include/migration/migration.h | 3 +++ 2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/arch_init.c b/arch_init.c index 872020e..fc66bd2 100644 --- a/arch_init.c +++ b/arch_init.c @@ -524,6 +524,19 @@ uint64_t ram_bytes_total(void) return total; } +void ram_madvise_free(ram_addr_t size) +{ + void *ram; + RAMBlock *block = NULL; + + ram = memory_region_get_ram_ptr(block->mr); + + /* XXX. Here just simplely madvise(.., MADV_DONTNEED) the whole ram + * pages, need more work to keep MADV_DONTNEED ram pages that + * already sent. */ + qemu_madvise(ram, size, MADV_DONTNEED); +} + static void migration_end(void) { if (migration_bitmap) { diff --git a/include/migration/migration.h b/include/migration/migration.h index 8866c3c..9cc5285 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -21,6 +21,7 @@ #include "qapi/error.h" #include "migration/vmstate.h" #include "qapi-types.h" +#include "exec/memory.h" enum { MIG_STATE_ERROR, @@ -100,6 +101,8 @@ uint64_t ram_bytes_remaining(void); uint64_t ram_bytes_transferred(void); uint64_t ram_bytes_total(void); +void ram_madvise_free(ram_addr_t size); + extern SaveVMHandlers savevm_ram_handlers; uint64_t dup_mig_bytes_transferred(void); -- 1.7.7.6