An analogous change was made in the LSI scsi driver, commit 7d052575258ad2fc487ca3f9a6b62eff1b767900. Qemu works around guests that don't correctly enable PCI bus mastering before using virtio queues' DMA (search for VIRTIO_PCI_BUG_BUS_MASTER / VIRTIO_PCI_FLAG_BUS_MASTER_BUG ), but it'd be better to be correct.
Signed-off-by: Eric Northup <[email protected]> --- src/hw/virtio-pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/hw/virtio-pci.c b/src/hw/virtio-pci.c index a382504..b9b3ab1 100644 --- a/src/hw/virtio-pci.c +++ b/src/hw/virtio-pci.c @@ -90,6 +90,7 @@ u16 vp_init_simple(u16 bdf) PCI_BASE_ADDRESS_IO_MASK; vp_reset(ioaddr); + pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER); vp_set_status(ioaddr, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER ); return ioaddr; -- 1.9.0.279.gdc9e3eb _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
