diff options
Diffstat (limited to 'migration/ram.c')
| -rw-r--r-- | migration/ram.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/migration/ram.c b/migration/ram.c index 1ec5c10561..5cd066467c 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -4246,7 +4246,7 @@ static void colo_flush_ram_cache(void) */ static int ram_load_precopy(QEMUFile *f) { - int flags = 0, ret = 0, invalid_flags = 0, len = 0; + int flags = 0, ret = 0, invalid_flags = 0, len = 0, i = 0; /* ADVISE is earlier, it shows the source has the postcopy capability on */ bool postcopy_advised = postcopy_is_advised(); if (!migrate_use_compression()) { @@ -4258,6 +4258,17 @@ static int ram_load_precopy(QEMUFile *f) void *host = NULL; uint8_t ch; + /* + * Yield periodically to let main loop run, but an iteration of + * the main loop is expensive, so do it each some iterations + */ + if ((i & 32767) == 0 && qemu_in_coroutine()) { + aio_co_schedule(qemu_get_current_aio_context(), + qemu_coroutine_self()); + qemu_coroutine_yield(); + } + i++; + addr = qemu_get_be64(f); flags = addr & ~TARGET_PAGE_MASK; addr &= TARGET_PAGE_MASK; |