Re: [Qemu-devel] [PATCH] pxb: cleanup

[Marcel Apfelbaum <marcel@redhat.com>]

On 03/01/2016 11:45 AM, Cao jin wrote:
> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
> ---
> BTW: this doc seems little out of date, since pxb has already support Q35.

Hi,

Yes, you are right, but we use a different device, pxb-pcie.
I will send a doc update about it, thanks for reminding me,
Marcel


>
>   docs/pci_expander_bridge.txt        | 6 +++---
>   hw/pci-bridge/pci_expander_bridge.c | 2 +-
>   2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/docs/pci_expander_bridge.txt b/docs/pci_expander_bridge.txt
> index e7c8fe9..3675027 100644
> --- a/docs/pci_expander_bridge.txt
> +++ b/docs/pci_expander_bridge.txt
> @@ -24,8 +24,8 @@ A detailed command line would be:
>   -object memory-backend-ram,size=1024M,policy=bind,host-nodes=0,id=ram-node0 -numa node,nodeid=0,cpus=0,memdev=ram-node0
>   -object memory-backend-ram,size=1024M,policy=bind,host-nodes=1,id=ram-node1 -numa node,nodeid=1,cpus=1,memdev=ram-node1
>   -device pxb,id=bridge1,bus=pci.0,numa_node=1,bus_nr=4 -netdev user,id=nd -device e1000,bus=bridge1,addr=0x4,netdev=nd
> --device pxb,id=bridge2,bus=pci.0,numa_node=0,bus_nr=8, -device e1000,bus=bridge2,addr=0x3
> --device pxb,id=bridge3,bus=pci.0,bus_nr=40, -drive if=none,id=drive0,file=[img] -device virtio-blk-pci,drive=drive0,scsi=off,bus=bridge3,addr=1
> +-device pxb,id=bridge2,bus=pci.0,numa_node=0,bus_nr=8 -device e1000,bus=bridge2,addr=0x3
> +-device pxb,id=bridge3,bus=pci.0,bus_nr=40 -drive if=none,id=drive0,file=[img] -device virtio-blk-pci,drive=drive0,scsi=off,bus=bridge3,addr=1
>
>   Here you have:
>    - 2 NUMA nodes for the guest, 0 and 1. (both mapped to the same NUMA node in host, but you can and should put it in different host NUMA nodes)
> @@ -43,7 +43,7 @@ Implementation
>   ==============
>   The PXB is composed by:
>   - HostBridge (TYPE_PXB_HOST)
> -  The host bridge allows to register and query the PXB's rPCI root bus in QEMU.
> +  The host bridge allows to register and query the PXB's PCI root bus in QEMU.
>   - PXBDev(TYPE_PXB_DEVICE)
>     It is a regular PCI Device that resides on the piix host-bridge bus and its bus uses the same PCI domain.
>     However, the bus behind is exposed through ACPI as a primary PCI bus and starts a new PCI hierarchy.
> diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c
> index d23b8da..5e7e546 100644
> --- a/hw/pci-bridge/pci_expander_bridge.c
> +++ b/hw/pci-bridge/pci_expander_bridge.c
> @@ -283,7 +283,7 @@ static void pxb_dev_exitfn(PCIDevice *pci_dev)
>   }
>
>   static Property pxb_dev_properties[] = {
> -    /* Note: 0 is not a legal a PXB bus number. */
> +    /* Note: 0 is not a legal PXB bus number. */
>       DEFINE_PROP_UINT8("bus_nr", PXBDev, bus_nr, 0),
>       DEFINE_PROP_UINT16("numa_node", PXBDev, numa_node, NUMA_NODE_UNASSIGNED),
>       DEFINE_PROP_END_OF_LIST(),
>


Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>