Re: [libvirt] Seabios can't boot from a disk behind i82801b11-bridge device (was Re: [PATCH 6/7] qemu: add dmi-to-pci-bridge controller)
Hi,
> Since pci-bridge devices themselves are not hot-pluggable, any
new
> pci-bridge controller that is added can (and will) be plugged into the
> dmi-to-pci-bridge as long as it has empty slots available.
Sigh. (yeah, I know I've been saying that a lot lately :-)
I've just now figured out that seabios doesn't recognize any disk device
that is connected anywhere behind the i82801b11-bridge device.
Huh?
1) leave this libvirt code as it is, and petition seabios to add
support
for recognizing i82801b11-bridge devices and booting from disks that are
connected behind them
This one. It's not that seabios has problems with PCI bridges. It
finds then, initializes them and maps the devices behind it just fine:
PCI: map device bdf=00:1f.3 bar 4, addr 0000d000, size 00000040 [io]
PCI: map device bdf=00:02.0 bar 1, addr 0000d040, size 00000040 [io]
PCI: map device bdf=00:1f.2 bar 4, addr 0000d080, size 00000020 [io]
PCI: map device bdf=00:02.0 bar 6, addr feb00000, size 00040000 [mem]
PCI: map device bdf=00:02.0 bar 0, addr feb40000, size 00020000 [mem]
PCI: map device bdf=00:01.0 bar 6, addr feb60000, size 00010000 [mem]
PCI: map device bdf=00:1f.2 bar 5, addr feb70000, size 00001000 [mem]
PCI: map device bdf=00:01.0 bar 1, addr feb71000, size 00001000 [mem]
PCI: map device bdf=00:01.0 bar 0, addr fc000000, size 02000000 [prefmem]
PCI: map device bdf=01:00.0 bar 0, addr 0000c000, size 00000040 [io]
PCI: map device bdf=01:00.0 bar 1, addr fea00000, size 00001000 [mem]
It looks more like a simple bug in the virtio code:
found virtio-scsi at 1:0
ERROR: queue size 65535 > 128
fail to find vq for virtio-scsi 1:0
Probably easy to fix, I'll have a look later today.
cheers,
Gerd