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| author | David Hildenbrand <david@redhat.com> | 2020-04-21 10:52:56 +0200 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-05-07 17:40:24 +0100 |
| commit | ddf35bdf0ab4282dfc6c326da98b54d84f140a68 (patch) | |
| tree | 2092c520b3786680916d6ebcf8883415a8112e8e /migration/ram.c | |
| parent | cbbf818224faf5ede75c876e4900c9f8e6b6c0db (diff) | |
| download | qemu-ddf35bdf0ab4282dfc6c326da98b54d84f140a68.zip qemu-ddf35bdf0ab4282dfc6c326da98b54d84f140a68.tar.gz qemu-ddf35bdf0ab4282dfc6c326da98b54d84f140a68.tar.bz2 | |
migration/ram: Consolidate variable reset after placement in ram_load_postcopy()
Let's consolidate resetting the variables.
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200421085300.7734-10-david@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixup for context conflicts with 91ba442
Diffstat (limited to 'migration/ram.c')
| -rw-r--r-- | migration/ram.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/migration/ram.c b/migration/ram.c index 52fc032..08eb382 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3147,7 +3147,7 @@ static int ram_load_postcopy(QEMUFile *f) /* Temporary page that is later 'placed' */ void *postcopy_host_page = mis->postcopy_tmp_page; void *this_host = NULL; - bool all_zero = false; + bool all_zero = true; int target_pages = 0; while (!ret && !(flags & RAM_SAVE_FLAG_EOS)) { @@ -3174,7 +3174,6 @@ static int ram_load_postcopy(QEMUFile *f) addr &= TARGET_PAGE_MASK; trace_ram_load_postcopy_loop((uint64_t)addr, flags); - place_needed = false; if (flags & (RAM_SAVE_FLAG_ZERO | RAM_SAVE_FLAG_PAGE | RAM_SAVE_FLAG_COMPRESS_PAGE)) { block = ram_block_from_stream(f, flags); @@ -3199,9 +3198,7 @@ static int ram_load_postcopy(QEMUFile *f) */ page_buffer = postcopy_host_page + ((uintptr_t)host & (block->page_size - 1)); - /* If all TP are zero then we can optimise the place */ if (target_pages == 1) { - all_zero = true; this_host = (void *)QEMU_ALIGN_DOWN((uintptr_t)host, block->page_size); } else { @@ -3221,7 +3218,6 @@ static int ram_load_postcopy(QEMUFile *f) */ if (target_pages == (block->page_size / TARGET_PAGE_SIZE)) { place_needed = true; - target_pages = 0; } place_source = postcopy_host_page; } @@ -3303,6 +3299,10 @@ static int ram_load_postcopy(QEMUFile *f) ret = postcopy_place_page(mis, place_dest, place_source, block); } + place_needed = false; + target_pages = 0; + /* Assume we have a zero page until we detect something different */ + all_zero = true; } } |