Re: [Xen-devel] pci-passthrough not working on 4.0.1-rc1-pre: mm.c:3847:d10 Bad page 00000000001beab4: ed=ffff830151210000(10), sd=ffff830151210000, caf=8000000000000002, taf=7400000000000001

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hi Konrad,

I don't use the framebuffer with "vfb", just use xm console or ssh to access 
the guests.
The strange thing is, i'm trying to passingthrough 1 soundcard to 1 guest, and 
2 USB cards to another.

The bad page shows only for the domain with the 2 USB cards.
The guest with the soundcard doesn't give a badpage error, but with lspci there 
still is now pci device visible in the guest.
After rebuilding what should be my last working setup, and enabling debug for 
passthrough in the kernel dmesg shows:

for the domain with the sound card:
[  163.544664] blkback: ring-ref 2047, event-channel 4, protocol 1 (x86_64-abi)
[  163.560049] pciback pci-7-0: fe state changed 3
[  163.560405] pciback pci-7-0: Reading frontend config
[  163.560787] pciback pci-7-0: Attaching to frontend resources - gnt_ref=2046 
evtchn=5
[  163.560839] pciback pci-7-0: Attached!
[  163.560842] pciback pci-7-0: Connecting...
[  163.561234] pciback pci-7-0: Connected? 0
[  163.562391] blkback: ring-ref 2045, event-channel 6, protocol 1 (x86_64-abi)
[  163.568221] pciback pci-7-0: fe state changed 4
[  169.727473] frontend_changed: backend/vbd/7/2049: prepare for reconnect
[  169.733315] frontend_changed: backend/vbd/7/2050: prepare for reconnect
[  169.922523] blkback: ring-ref 8, event-channel 8, protocol 1 (x86_64-abi)
[  169.929428] blkback: ring-ref 9, event-channel 9, protocol 1 (x86_64-abi)
[  173.880008] vif7.0: no IPv6 routers present
[  178.148010] xen_bridge: port 7(vif7.0) entering forwarding state


for the domain with the 2 usb cards:

[  230.323946] pciback pci-10-0: allocated pdev @ 0xffff88002eb60b40
[  230.326866] pciback pci-10-0: getting be setup
[  230.327668] pciback pci-10-0: exporting dom 0 bus 1 slot 8 func 0
[  230.329067] pciback 0000:01:08.0: registering for 10
[  230.330259] pciback pci-10-0: exporting dom 0 bus 1 slot 8 func 1
[  230.331564] pciback 0000:01:08.1: registering for 10
[  230.333510] pciback pci-10-0: exporting dom 0 bus 1 slot 8 func 2
[  230.335060] pciback 0000:01:08.2: registering for 10
[  230.337069] pciback pci-10-0: exporting dom 0 bus 9 slot 1 func 0
[  230.339290] pciback 0000:09:01.0: registering for 10
[  230.340986] pciback pci-10-0: exporting dom 0 bus 9 slot 1 func 1
[  230.342140] pciback 0000:09:01.1: registering for 10
[  230.343800] pciback pci-10-0: exporting dom 0 bus 9 slot 1 func 2
[  230.344784] pciback 0000:09:01.2: registering for 10
[  230.346331] pciback pci-10-0: Publishing pci roots
[  230.346583] pciback pci-10-0: writing root 0 at 0000:01
[  230.350401] pciback pci-10-0: Publishing pci roots
[  230.351142] pciback pci-10-0: Publishing pci roots
[  230.352203] pciback pci-10-0: Publishing pci roots
[  230.352944] pciback pci-10-0: writing root 1 at 0000:09
[  230.355628] pciback pci-10-0: Publishing pci roots
[  230.356827] pciback pci-10-0: Publishing pci roots
[  230.390018] pciback pci-10-0: fe state changed 1
[  231.541480] blkback: ring-ref 2047, event-channel 4, protocol 1 (x86_64-abi)
[  231.552080] pciback pci-10-0: fe state changed 3
[  231.552306] pciback pci-10-0: Reading frontend config
[  231.552678] pciback pci-10-0: Attaching to frontend resources - gnt_ref=2046 
evtchn=5
[  231.552746] pciback pci-10-0: Attached!
[  231.552749] pciback pci-10-0: Connecting...
[  231.555412] pciback pci-10-0: Connected? 0
[  231.558960] pciback pci-10-0: fe state changed 4
[  231.561640] blkback: ring-ref 2045, event-channel 6, protocol 1 (x86_64-abi)
[  231.570789] blkback: ring-ref 2044, event-channel 7, protocol 1 (x86_64-abi)
[  237.811338] frontend_changed: backend/vbd/10/2049: prepare for reconnect
[  237.818039] frontend_changed: backend/vbd/10/2050: prepare for reconnect
[  237.824610] frontend_changed: backend/vbd/10/2065: prepare for reconnect
[  238.243595] blkback: ring-ref 8, event-channel 12, protocol 1 (x86_64-abi)
[  238.250822] blkback: ring-ref 9, event-channel 13, protocol 1 (x86_64-abi)
[  238.258358] blkback: ring-ref 10, event-channel 14, protocol 1 (x86_64-abi)
[  240.108012] vif10.0: no IPv6 routers present
[  245.084015] xen_bridge: port 10(vif10.0) entering forwarding state


and xm dmesg:

(XEN)   _PSD: num_entries=5 rev=0 domain=0 coord_type=253 num_processors=2
(XEN)   _PPC: 0
(XEN) printk: 11 messages suppressed.
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001
(XEN) mm.c:3847:d10 Bad page 000000000013eaba: ed=ffff83013f7b0000(10), 
sd=ffff83013f7b0000, caf=8000000000000002, taf=7400000000000001

--

Sander




Monday, April 19, 2010, 6:27:36 PM, you wrote:

> On Mon, Apr 19, 2010 at 06:13:42PM +0200, Sander Eikelenboom wrote:
>> Hi Konrad,
>> 
>> I'm using PV-domains and not HVM, does that use the QEMU fb as well ?

> If you have 'vfb=[..]' then QEMU is involved - just to provide you with
> a VNC version of a framebuffer.
>> 
>> What i did notice is CONFIG_XEN_GNTDEV seems to be missing from the "latest 
>> working" kernel source .config
>> Is this required for the passthrough ?

> No. But it is required by QEMU.




-- 
Best regards,
 Sander                            mailto:linux@xxxxxxxxxxxxxx


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