| commit | d9997d89a4a09a330a056929d06d4b7b0b7a8239 | |
| author | Marcel Apfelbaum <marcel@redhat.com> | |
| Wed, 7 Sep 2016 15:02:25 +0000 (7 18:02 +0300) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Fri, 9 Sep 2016 17:58:34 +0000 (9 20:58 +0300) | ||
| tree | 5e4e10bea0a4a1c27cde5ba67458a52bbd4c3a84 | treesnapshot (tar.gz zip) |
| parent | 14c985cffa6cb177fc01a163d8bcf227c104718c | commitdiff |
virtio-pci: reduce modern_mem_bar size
Currently each VQ Notification Virtio Capability is allocated
on a different page. The idea is to enable split drivers within
guests, however there are no known plans to do that.
The allocation will result in a 8MB BAR, more than various
guest firmwares pre-allocates for PCI Bridges hotplug process.
Reserve 4 bytes per VQ by default and add a new parameter
"page-per-vq" to be used with split drivers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently each VQ Notification Virtio Capability is allocated
on a different page. The idea is to enable split drivers within
guests, however there are no known plans to do that.
The allocation will result in a 8MB BAR, more than various
guest firmwares pre-allocates for PCI Bridges hotplug process.
Reserve 4 bytes per VQ by default and add a new parameter
"page-per-vq" to be used with split drivers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/virtio/virtio-pci.c | diffblobblamehistory | |
| hw/virtio/virtio-pci.h | diffblobblamehistory | |
| include/hw/compat.h | diffblobblamehistory |