On Wed, May 11, 2016 at 04:53:54PM +0300, Michael S. Tsirkin wrote:
> On Wed, May 11, 2016 at 02:40:31PM +0800, Peter Xu wrote:
> > When there are devices under PCI bridge (or bridges), PCI requester ID
> > should be the one that hooked on the root PCI bus, not the PCI device
> > itself.
> >
> > Signed-off-by: Peter Xu <pet...@redhat.com>
>
> I think this is only correct for pci bridges, and wrong for pci express
> bridges.
>
> How exactly do you test this?
I was using Radim's test case:
bin=x86_64-softmmu/qemu-system-x86_64
$bin -machine q35,iommu=on,intremap=on,kernel-irqchip=split \
-smp cpus=2 -m 1024 -enable-kvm \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-netdev user,id=user.0,hostfwd=tcp::5555-:22 \
-device e1000,netdev=user.0,bus=pci.2,addr=0x1 \
-drive
file=/var/lib/libvirt/images/vm1.qcow2,format=qcow2,if=none,id=drive-virtio-disk0
\
-device
virtio-blk-pci,scsi=off,bus=pci.2,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
This does not boot on v6 series, but can boot with the patch
mentioned.
Do you know where I can find any document on related topics?
Thanks in advance.
-- peterx
