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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2017-02-24 18:28:39 +0000 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2017-02-28 11:30:24 +0000 |
| commit | 4c011c37ecb37690b3c6463db78c71855694a911 (patch) | |
| tree | dfaa89b39faa00b277e0f2a436474ec4190e7c9b /migration | |
| parent | 332847f0757ee057865fb989e70373092b3b4692 (diff) | |
| download | qemu-4c011c37ecb37690b3c6463db78c71855694a911.tar.gz | |
postcopy: Send whole huge pages
The RAM save code uses ram_save_host_page to send whole
host pages at a time; change this to use the host page size associated
with the RAM Block which may be a huge page.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20170224182844.32452-12-dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/ram.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/migration/ram.c b/migration/ram.c index 9f28da2eab..719425b9b8 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1302,6 +1302,8 @@ static int ram_save_target_page(MigrationState *ms, QEMUFile *f, * offset to point into the middle of a host page * in which case the remainder of the hostpage is sent. * Only dirty target pages are sent. + * Note that the host page size may be a huge page for this + * block. * * Returns: Number of pages written. * @@ -1320,6 +1322,8 @@ static int ram_save_host_page(MigrationState *ms, QEMUFile *f, ram_addr_t dirty_ram_abs) { int tmppages, pages = 0; + size_t pagesize = qemu_ram_pagesize(pss->block); + do { tmppages = ram_save_target_page(ms, f, pss, last_stage, bytes_transferred, dirty_ram_abs); @@ -1330,7 +1334,7 @@ static int ram_save_host_page(MigrationState *ms, QEMUFile *f, pages += tmppages; pss->offset += TARGET_PAGE_SIZE; dirty_ram_abs += TARGET_PAGE_SIZE; - } while (pss->offset & (qemu_host_page_size - 1)); + } while (pss->offset & (pagesize - 1)); /* The offset we leave with is the last one we looked at */ pss->offset -= TARGET_PAGE_SIZE; |