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| author | Jason Wang <jasowang@redhat.com> | 2015-04-23 14:21:49 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-04-27 21:02:41 +0200 |
| commit | a0ccd2123ee2f83a1f081e4c39013c3316f9ec7a (patch) | |
| tree | a725055c1c60171140587dfe95f056c81b309d77 /docs | |
| parent | 851c2a75a6e80c8aa5e713864d98cfb512e7229b (diff) | |
| download | qemu-a0ccd2123ee2f83a1f081e4c39013c3316f9ec7a.tar.gz | |
pci: remove hard-coded bar size in msix_init_exclusive_bar()
This patch lets msix_init_exclusive_bar() can calculate the bar and
pba size based on the number of MSI-X vectors other than using a
hard-coded limit 4096. This is needed to allow device to have more
than 128 MSI_X vectors. To keep migration compatibility, keep using
4096 as bar size and 2048 for pba offset.
Notes: We don't care about the case that using vectors > 128 for
legacy machine type. Since we limit the queue max to 64, so vectors >=
65 is meaningless.
Virtio device will be the first user for this.
Cc: Keith Busch <keith.busch@intel.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs')
0 files changed, 0 insertions, 0 deletions