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authorDr. David Alan Gilbert <dgilbert@redhat.com>2018-03-12 17:21:22 +0000
committerMichael S. Tsirkin <mst@redhat.com>2018-03-20 16:40:37 +0200
commit29d8fa7f734ec4c55135e85e2d25d1650c8c5985 (patch)
tree1770ce9327ed526a640b699e3fdfc2cb28ff3d1d /migration
parentc1ece84e7c930a12eccff56c7482e4068ec00eb7 (diff)
postcopy: Allow shared memory
Now that we have the mechanisms in here, allow shared memory in a postcopy. Note that QEMU can't tell who all the users of shared regions are and thus can't tell whether all the users of the shared regions have appropriate support for postcopy. Those devices that explicitly support shared memory (e.g. vhost-user) must check, but it doesn't stop weirder configurations causing problems. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'migration')
-rw-r--r--migration/postcopy-ram.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 7d4396fe95..efd77939af 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -215,12 +215,6 @@ static int test_ramblock_postcopiable(const char *block_name, void *host_addr,
RAMBlock *rb = qemu_ram_block_by_name(block_name);
size_t pagesize = qemu_ram_pagesize(rb);
- if (qemu_ram_is_shared(rb)) {
- error_report("Postcopy on shared RAM (%s) is not yet supported",
- block_name);
- return 1;
- }
-
if (length % pagesize) {
error_report("Postcopy requires RAM blocks to be a page size multiple,"
" block %s is 0x" RAM_ADDR_FMT " bytes with a "