Re: [Qemu-devel] [PATCH] hw/pxb: add chassis_nr property

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Jul 13, 2015 at 01:35:09PM +0300, Marcel Apfelbaum wrote:
> On 06/28/2015 06:17 PM, Marcel Apfelbaum wrote:
> >On 06/18/2015 08:49 PM, Marcel Apfelbaum wrote:
> >>Add a chassis_nr property Instead of using PXB bus number
> >>as internal bridge's chassis nr.
> >ping
> >
> >I think this should be part of 2.4.
> ping ^^^^^
> 
> Thanks,
> Marcel

This doesn't apply anymore, I assumed it's no longer needed.
Can you rebase and repost please?


> >
> >Thanks,
> >Marcel
> >
> >>
> >>Suggested-by: Michael S. Tsirkin <mst@redhat.com>
> >>Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
> >>---
> >>  docs/pci_expander_bridge.txt        | 7 +++----
> >>  hw/pci-bridge/pci_expander_bridge.c | 5 ++++-
> >>  2 files changed, 7 insertions(+), 5 deletions(-)
> >>
> >>diff --git a/docs/pci_expander_bridge.txt b/docs/pci_expander_bridge.txt
> >>index d7913fb..bc5be05 100644
> >>--- a/docs/pci_expander_bridge.txt
> >>+++ b/docs/pci_expander_bridge.txt
> >>@@ -23,9 +23,9 @@ A detailed command line would be:
> >>  -m 2G
> >>  -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,bus=pci.0 -device e1000,bus=bridge2,addr=0x3
> >>--device pxb,id=bridge3,bus=pci.0,bus_nr=40,bus=pci.0 -drive if=none,id=drive0,file=[img] -device virtio-blk-pci,drive=drive0,scsi=off,bus=bridge3,addr=1
> >>+-device pxb,id=bridge1,bus=pci.0,numa_node=1,bus_nr=4,chassis_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,bus=pci.0,chassis_nr=8 -device e1000,bus=bridge2,addr=0x3
> >>+-device pxb,id=bridge3,bus=pci.0,bus_nr=40,bus=pci.0,chassis_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)
> >>@@ -55,4 +55,3 @@ The PXB is composed by:
> >>    - Using the bridge will enable hotplug support
> >>    - All the devices behind the bridge will use bridge's IO/MEM windows compacting
> >>      the PCI address space.
> >>-
> >>diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c
> >>index ec2bb45..62756d1 100644
> >>--- a/hw/pci-bridge/pci_expander_bridge.c
> >>+++ b/hw/pci-bridge/pci_expander_bridge.c
> >>@@ -38,6 +38,7 @@ typedef struct PXBDev {
> >>      PCIDevice parent_obj;
> >>      /*< public >*/
> >>
> >>+    uint8_t chassis_nr;
> >>      uint8_t bus_nr;
> >>      uint16_t numa_node;
> >>  } PXBDev;
> >>@@ -175,7 +176,7 @@ static int pxb_dev_initfn(PCIDevice *dev)
> >>
> >>      bds = qdev_create(BUS(bus), "pci-bridge");
> >>      bds->id = dev_name;
> >>-    qdev_prop_set_uint8(bds, "chassis_nr", pxb->bus_nr);
> >>+    qdev_prop_set_uint8(bds, "chassis_nr", pxb->chassis_nr);
> >>
> >>      PCI_HOST_BRIDGE(ds)->bus = bus;
> >>
> >>@@ -194,6 +195,8 @@ static int pxb_dev_initfn(PCIDevice *dev)
> >>  }
> >>
> >>  static Property pxb_dev_properties[] = {
> >>+    /* Note: 0 is not a legal chassis number. */
> >>+    DEFINE_PROP_UINT8("chassis_nr", PXBDev, chassis_nr, 0),
> >>      /* Note: 0 is not a legal a PXB bus number. */
> >>      DEFINE_PROP_UINT8("bus_nr", PXBDev, bus_nr, 0),
> >>      DEFINE_PROP_UINT16("numa_node", PXBDev, numa_node, NUMA_NODE_UNASSIGNED),
> >>
> >