Re: [Xen-devel] [Qemu-devel] [PATCH V7 00/11] Xen PCI Passthrough

[Tobias Geiger <tobias.geiger@xxxxxxxxx>]

Hi

With the patch you mentioned, xl create looks more familiar:

libxl: error: libxl_pci.c:756:libxl__device_pci_reset: write to 
/sys/bus/pci/devices/0000:03:00.0/reset returned -1: Invalid argument
libxl: error: libxl_pci.c:756:libxl__device_pci_reset: write to 
/sys/bus/pci/devices/0000:03:00.1/reset returned -1: Invalid argument

This is actually "normal", at least compared to traditional qemu-dm - i 
guess due to missing FLR (Bios is capable, but Card not i assume).
Anyhow - the downside of the patch is, qemu doesnt even start :)

This is qemu-dm.log (with debugging enabled):

[00:06.0] pci_intx: intx=1
[00:06.0] pt_initfn: Real physical device 03:00.0 registered successfuly!
[00:07.0] pt_initfn: Assigning real physical device 03:00.1 to devfn 0x38
[00:07.0] pt_register_regions: IO region 0 registered (size=0x00004000 
base_addr=0xc3120000 type: 0)
[00:07.0] pci_intx: intx=2
[00:07.0] pt_initfn: Real physical device 03:00.1 registered successfuly!
[00:08.0] pt_initfn: Assigning real physical device 00:1d.0 to devfn 0x40
[00:08.0] pt_register_regions: IO region 4 registered (size=0x00000020 
base_addr=0x00005080 type: 0x1)
[00:08.0] pci_intx: intx=1
[00:08.0] pt_initfn: Real physical device 00:1d.0 registered successfuly!
[00:09.0] pt_initfn: Assigning real physical device 00:1d.1 to devfn 0x48
[00:09.0] pt_register_regions: IO region 4 registered (size=0x00000020 
base_addr=0x00005060 type: 0x1)
[00:09.0] pci_intx: intx=2
[00:09.0] pt_initfn: Real physical device 00:1d.1 registered successfuly!
[00:0a.0] pt_initfn: Assigning real physical device 00:1d.2 to devfn 0x50
[00:0a.0] pt_register_regions: IO region 4 registered (size=0x00000020 
base_addr=0x00005040 type: 0x1)
[00:0a.0] pci_intx: intx=3
[00:0a.0] pt_initfn: Real physical device 00:1d.2 registered successfuly!
[00:0b.0] pt_initfn: Assigning real physical device 00:1d.7 to devfn 0x58
[00:0b.0] pt_register_regions: IO region 0 registered (size=0x00000400 
base_addr=0xc3321000 type: 0)
[00:0b.0] pci_intx: intx=1
[00:0b.0] pt_initfn: Real physical device 00:1d.7 registered successfuly!
[00:06.0] pt_pci_read_config: address=0x000a val=0x00000300 len=2
[00:06.0] pt_pci_read_config: address=0x0000 val=0x00001002 len=2
[00:06.0] pt_pci_read_config: address=0x0002 val=0x00006718 len=2
[00:06.0] pt_pci_read_config: address=0x0010 val=0x0000000c len=4
[00:06.0] pt_pci_write_config: address=0x0010 val=0xffffffff len=4
[00:06.0] pt_iomem_map: BAR 0, e_phys=0xffffffffffffffff 
maddr=0xe0000000 len=0x10000000 first_map=1
[00:06.0] pt_pci_read_config: address=0x0010 val=0xf000000c len=4
[00:06.0] pt_pci_write_config: address=0x0010 val=0x0000000c len=4
[00:06.0] pt_iomem_map: BAR 0, e_phys=0xffffffffffffffff 
maddr=0xe0000000 len=0x10000000 first_map=0
[00:06.0] pt_pci_read_config: address=0x0018 val=0x00000004 len=4
[00:06.0] pt_pci_write_config: address=0x0018 val=0xffffffff len=4
[00:06.0] pt_iomem_map: BAR 2, e_phys=0xffffffffffffffff 
maddr=0xc3100000 len=0x20000 first_map=1
[00:06.0] pt_pci_read_config: address=0x0018 val=0xfffe0004 len=4
[00:06.0] pt_pci_write_config: address=0x0018 val=0x00000004 len=4
[00:06.0] pt_iomem_map: BAR 2, e_phys=0xffffffffffffffff 
maddr=0xc3100000 len=0x20000 first_map=0
[00:06.0] pt_pci_read_config: address=0x0020 val=0x00000001 len=4
[00:06.0] pt_pci_write_config: address=0x0020 val=0xffffffff len=4
[00:06.0] pt_ioport_map: BAR 4, e_phys=0xffffffffffffffff 
pio_base=0x2000 len=256 first_map=1
[00:06.0] pt_pci_read_config: address=0x0020 val=0xffffff01 len=4
[00:06.0] pt_pci_write_config: address=0x0020 val=0x00000001 len=4
[00:06.0] pt_ioport_map: BAR 4, e_phys=0xffffffffffffffff 
pio_base=0x2000 len=256 first_map=0
[00:06.0] pt_pci_read_config: address=0x0024 val=0x00000000 len=4
[00:06.0] pt_pci_write_config: address=0x0024 val=0xffffffff len=4
[00:06.0] pt_pci_read_config: address=0x0024 val=0x00000000 len=4
[00:06.0] pt_pci_write_config: address=0x0024 val=0x00000000 len=4
[00:06.0] pt_pci_read_config: address=0x0030 val=0x00000000 len=4
[00:06.0] pt_pci_write_config: address=0x0030 val=0xffffffff len=4
[00:06.0] pt_iomem_map: BAR 6, e_phys=0xffffffffffffffff 
maddr=0xc3140000 len=0x20000 first_map=1
[00:06.0] pt_pci_read_config: address=0x0030 val=0xfffe0001 len=4
[00:06.0] pt_pci_write_config: address=0x0030 val=0x00000000 len=4
[00:06.0] pt_iomem_map: BAR 6, e_phys=0xffffffffffffffff 
maddr=0xc3140000 len=0x20000 first_map=0
[00:06.0] pt_pci_read_config: address=0x003d val=0x00000001 len=1
[00:06.0] pt_pci_write_config: address=0x003c val=0x0000000b len=1
[00:06.0] pt_pci_read_config: address=0x0004 val=0x00000000 len=2
[00:06.0] pt_pci_write_config: address=0x0004 val=0x00000004 len=2
qemu-system-x86_64: 
/usr/src/xen-with-upstream-qemu-patch/upstream-qemu/qemu/memory.c:1378: 
memory_region_del_subregion: Assertion `subregion->parent == mr' failed.
Waiting for data...



Am 20.02.2012 18:08, schrieb Anthony PERARD:
> On Mon, Feb 20, 2012 at 16:11, Tobias Geiger<tobias.geiger@xxxxxxxxx>  wrote:
> > My Domu (Win7_64) boots fine, but 2 of my 6 passed-through pcidevices dont get
> > passed through at all:
> >
> > libxl: error: libxl_pci.c:756:libxl__device_pci_reset: write to
> > /sys/bus/pci/devices/0000:03:00.0/reset returned -1: Invalid argument
> > libxl: error: libxl_qmp.c:239:qmp_handle_error_response: received an error
> > message from QMP server: Device 'xen-pci-passthrough' could not be initialized
> > libxl: error: libxl_pci.c:756:libxl__device_pci_reset: write to
> > /sys/bus/pci/devices/0000:03:00.1/reset returned -1: Invalid argument
> > libxl: error: libxl_qmp.c:239:qmp_handle_error_response: received an error
> > message from QMP server: Device 'xen-pci-passthrough' could not be initialized
> These two errors are probably because my patch series depend on one
> other patch sent earlier:
> http://lists.xen.org/archives/html/xen-devel/2012-02/msg01027.html
>
> > The other 4 PCI-Ids (USB Controller) get passed through, but the USB-Devices
> > attached to them are "Not Working" according to Windows Device-Manager.
> >
> > All Devices worked with the old qemu-dm (traditional).
> >
> > Anything i can do to debug this further?
> You can send the log of qemu ( /var/log/xen/qemu-dm-$vm_name.log ).
> There is also a way to have more from QEMU by decommenting this two lines:
> /* #define PT_LOGGING_ENABLED */
> /* #define PT_DEBUG_PCI_CONFIG_ACCESS */
> in hw/xen_pci_passthrough.h
>
> Thanks for the testing,

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