On 03/31/2011 12:43 PM, Michael S. Tsirkin wrote:
Currently, vga cards that allocate vga ram,
register it as regular ram. When this happens
a lot, vhost need to get notified and flush
its memory tables, which is slow.
This was observed with cirrus vga.
As a solution, add an explicit flag when
registering vga ram, vhost-net can simply ignore it.
Long term, we might be able to use this API
to avoid the need to request
dirty loggin from devices explicitly.
Tested: with cirrus vga only.
Signed-off-by: Michael S. Tsirkin<m...@redhat.com>
Treating vga specially is not the right approach.
You want to treat real RAM specially and only make that visible to
vhost. See http://wiki.qemu.org/Features/RamAPI
There is nothing special about VGA.
Regards,
Anthony Liguori
