Re: [Xen-devel] problems with pciback on 2.6.27 with xenclient patches

[Jean Guyader <jean.guyader@xxxxxxxxx>]

Hi Ben,

This line "virt_caps              : hvm" should have hvm and
hvm_directio if you want to do pass through. Could you please get us
the xen boot log?

Jean

2009/6/17 Ben Garside <ben@xxxxxxxxxxxxxxxxxx>:
> Hi Jean,
>
> Thanks very much for the reply!
>
> Output from xm info is as follows:
> host                   : benDom0
> release                : 2.6.27.19-5.1
> version                : #7 SMP Mon Jun 15 16:01:44 BST 2009
> machine                : x86_64
> nr_cpus                : 4
> nr_nodes               : 1
> cores_per_socket       : 4
> threads_per_core       : 1
> cpu_mhz                : 2327
> hw_caps                :
> bfebfbff:20100800:00000000:00000140:040ce3bd:00000000:00000001:00000000
> virt_caps              : hvm
> total_memory           : 2045
> free_memory            : 127
> node_to_cpu            : node0:0-3
> node_to_memory         : node0:127
> xen_major              : 3
> xen_minor              : 5
> xen_extra              : -unstable
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
> hvm-3.0-x86_32p hvm-3.0-x86_64
> xen_scheduler          : credit
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : Mon Jun 08 12:24:14 2009 +0100 19739:4448fae52553
> cc_compiler            : gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu12)
> cc_compile_by          : root
> cc_compile_domain      :
> cc_compile_date        : Fri Jun 12 08:22:28 BST 2009
> xend_config_format     : 4
>
>
> 2009/6/17 Jean Guyader <jean.guyader@xxxxxxxxx>
>>
>> Hi Ben,
>>
>> The "I/O Virtualization Enable" log message is displayed by Xen and
>> not by pciback in dom0.
>>
>> Could you give us the output of "xm info".
>>
>> Thanks,
>>
>> Jean
>>
>> 2009/6/16 Ben Garside <ben@xxxxxxxxxxxxxxxxxx>:
>> > Hi, am not sure if this is the most appropriate place to post, so
>> > excuse me if
>> > it's not. I've been tearing my hair out (and there's not much left)
>> > trying to
>> > get pciback to work. I picked the xci based kernel (2.6.27 with the pq
>> > patches
>> > (using guilt) - summarised at http://xenbits.xensource.com/xenclient/)
>> > as it
>> > seems to have the best support for pciback (and ultimate goal of vga
>> > passthrough) for a recent kernel. Compile was ok, XEN related kernel
>> > parameters
>> > are below. When I add the iommu=1 vtd=1  pciback.permissive
>> > pciback.hide=(00:1b.0) to the boot args, it looks like the card is
>> > "seized",
>> > only later to be released again - no mention of I/O virtualization
>> > which I have
>> > seen in logs of a few other people. Doing an lspci in Dom0 shows the
>> > card as
>> > normal. Have tried with a few different cards (this particular pci
>> > device is
>> > onboard sound).
>> >
>> > I have tried it with xen 3.40 (release) and with unstable (currently
>> > 3.5). My
>> > machine is a Dell T5400 (xeon processor) and has all the vt-d options
>> > enabled in
>> > the bios. Oh one other thing I noticed is that if I put a spurious
>> > (incorrect)
>> > option as a boot arg, I don't get any warning that this is
>> > unrecognised - have
>> > also tried adding debug to the boot line, but it has no effect.
>> >
>> > Any help much appreciated - this is driving me crazy!
>> >
>> >
>> > Grub entry:
>> > title Xen 3.4 Kernel 2.6.27.19-5.1
>> > uuid 6724237b-5a56-4765-b3e0-21ce3d358ab3
>> > kernel /xen-3.4.gz
>> > module /vmlinuz-2.6.27.19-5.1  debug
>> > root=/dev/mapper/VolGroup0-dom0_root ro
>> > iommu=1 vtd=1 dom0_mem=512M pciback.permissive  pciback.hide=(00:1b.0)
>> > console=tty0
>> > module /initrd-2.6.27.19-5.1.img
>> >
>> >
>> > Dmesg Entries:
>> >
>> > [    0.522373] pciback: adding device ID type: 1 for 0000:00:1b.0
>> > [    0.522470] pciback 0000:00:00.0: probing...
>> > [    0.522554] pciback 0000:00:01.0: probing...
>> > [    0.522633] pciback 0000:00:05.0: probing...
>> > [    0.522713] pciback 0000:00:09.0: probing...
>> > [    0.522794] pciback 0000:00:10.0: probing...
>> > [    0.522875] pciback 0000:00:10.1: probing...
>> > [    0.522956] pciback 0000:00:10.2: probing...
>> > [    0.523037] pciback 0000:00:10.3: probing...
>> > [    0.523118] pciback 0000:00:10.4: probing...
>> > [    0.523199] pciback 0000:00:11.0: probing...
>> > [    0.523280] pciback 0000:00:15.0: probing...
>> > [    0.523361] pciback 0000:00:15.1: probing...
>> > [    0.523442] pciback 0000:00:16.0: probing...
>> > [    0.523523] pciback 0000:00:16.1: probing...
>> > [    0.523604] pciback 0000:00:1b.0: probing...
>> > [    0.523679] pciback 0000:00:1b.0: seizing device
>> > [    0.523755] pciback 0000:00:1b.0: pcistub_device_alloc
>> > [    0.523832] pciback 0000:00:1b.0: deferring initialization
>> > [    0.523915] pciback 0000:00:1c.0: probing...
>> > [    0.524067] pciback 0000:00:1d.0: probing...
>> > [    0.524149] pciback 0000:00:1d.1: probing...
>> >
>> > ...
>> > [    0.896278] pciback: pcistub_init_devices_late
>> > [    0.896356] pciback 0000:00:1b.0: initializing...
>> > [    0.896433] pciback 0000:00:1b.0: pcistub_dev_data_alloc
>> > [    0.896511] pciback 0000:00:1b.0: initializing config
>> > [    0.896586] pciback 0000:00:1b.0: initializing virtual
>> > configuration space
>> > [    0.896666] pciback 0000:00:1b.0: added config field at offset 0x04
>> > [    0.896741] pciback 0000:00:1b.0: added config field at offset 0x3c
>> > [    0.896817] pciback 0000:00:1b.0: added config field at offset 0x3d
>> > [    0.896893] pciback 0000:00:1b.0: added config field at offset 0x0c
>> > [    0.896969] pciback 0000:00:1b.0: added config field at offset 0x0d
>> > [    0.897044] pciback 0000:00:1b.0: added config field at offset 0x0f
>> > [    0.897134] pciback 0000:00:1b.0: added config field at offset 0x10
>> > [    0.897222] pciback 0000:00:1b.0: added config field at offset 0x14
>> > [    0.897306] pciback 0000:00:1b.0: added config field at offset 0x18
>> > [    0.897389] pciback 0000:00:1b.0: added config field at offset 0x1c
>> > [    0.897472] pciback 0000:00:1b.0: added config field at offset 0x20
>> > [    0.897556] pciback 0000:00:1b.0: added config field at offset 0x24
>> > [    0.897639] pciback 0000:00:1b.0: added config field at offset 0x30
>> > [    0.897736] pciback 0000:00:1b.0: Found capability 0x1 at 0x50
>> > [    0.897812] pciback 0000:00:1b.0: added config field at offset 0x50
>> > [    0.897888] pciback 0000:00:1b.0: added config field at offset 0x52
>> > [    0.897966] pciback 0000:00:1b.0: added config field at offset 0x54
>> > [    0.898052] pciback 0000:00:1b.0: added config field at offset 0x56
>> > [    0.898128] pciback 0000:00:1b.0: added config field at offset 0x57
>> > [    0.898204] pciback 0000:00:1b.0: enabling device
>> > [    0.898290] pciback 0000:00:1b.0: reset device
>> > [    0.932248] serio: i8042 KBD port at 0x60,0x64 irq 1
>> > [    0.932353] serio: i8042 AUX port at 0x60,0x64 irq 12
>> > [    0.948131] mice: PS/2 mouse device common for all mice
>> >
>> >
>> >
>> >
>> > 2.6.27 with patches compile args:
>> > # CONFIG_X86_XEN is not set
>> > CONFIG_X86_64_XEN=y
>> > CONFIG_X86_XEN_GENAPIC=y
>> > CONFIG_XEN_PCIDEV_FRONTEND=y
>> > CONFIG_XEN_PCIDEV_FE_DEBUG=y
>> > # CONFIG_INPUT_XEN is not set
>> > # CONFIG_TCG_XEN is not set
>> > CONFIG_XEN=y
>> > CONFIG_XEN_INTERFACE_VERSION=0x00030207
>> > # XEN
>> > CONFIG_XEN_PRIVILEGED_GUEST=y
>> > # CONFIG_XEN_UNPRIVILEGED_GUEST is not set
>> > CONFIG_XEN_PRIVCMD=y
>> > CONFIG_XEN_XENBUS_DEV=y
>> > CONFIG_XEN_NETDEV_ACCEL_SFC_UTIL=m
>> > CONFIG_XEN_BACKEND=y
>> > CONFIG_XEN_BLKDEV_BACKEND=y
>> > CONFIG_XEN_BLKDEV_TAP=y
>> > CONFIG_XEN_NETDEV_BACKEND=y
>> > # CONFIG_XEN_NETDEV_PIPELINED_TRANSMITTER is not set
>> > CONFIG_XEN_NETDEV_LOOPBACK=m
>> > CONFIG_XEN_PCIDEV_BACKEND=y
>> > CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
>> > # CONFIG_XEN_PCIDEV_BACKEND_PASS is not set
>> > # CONFIG_XEN_PCIDEV_BACKEND_SLOT is not set
>> > # CONFIG_XEN_PCIDEV_BACKEND_CONTROLLER is not set
>> > CONFIG_XEN_PCIDEV_BE_DEBUG=y
>> > CONFIG_XEN_TPMDEV_BACKEND=y
>> > CONFIG_XEN_SCSI_BACKEND=m
>> > CONFIG_XEN_BLKDEV_FRONTEND=y
>> > CONFIG_XEN_NETDEV_FRONTEND=y
>> > CONFIG_XEN_NETDEV_ACCEL_SFC_FRONTEND=m
>> > CONFIG_XEN_SCSI_FRONTEND=m
>> > CONFIG_XEN_GRANT_DEV=y
>> > CONFIG_XEN_FRAMEBUFFER=y
>> > CONFIG_XEN_KEYBOARD=y
>> > CONFIG_XEN_DISABLE_SERIAL=y
>> > CONFIG_XEN_SYSFS=y
>> > CONFIG_XEN_NR_GUEST_DEVICES=256
>> > # CONFIG_XEN_COMPAT_030002_AND_LATER is not set
>> > # CONFIG_XEN_COMPAT_030004_AND_LATER is not set
>> > # CONFIG_XEN_COMPAT_030100_AND_LATER is not set
>> > # CONFIG_XEN_COMPAT_030200_AND_LATER is not set
>> > CONFIG_XEN_COMPAT_LATEST_ONLY=y
>> > CONFIG_XEN_COMPAT=0xffffff
>> > CONFIG_XEN_SMPBOOT=y
>> > CONFIG_XEN_DEVMEM=y
>> > CONFIG_XEN_BALLOON=y
>> > CONFIG_XEN_SCRUB_PAGES=y
>> >
>> > _______________________________________________
>> > Xen-devel mailing list
>> > Xen-devel@xxxxxxxxxxxxxxxxxxx
>> > http://lists.xensource.com/xen-devel
>> >
>> >
>
>

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