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Re: [Xen-devel] [xen-unstable test] 142383: regressions - FAIL



On Tue, Oct 08, 2019 at 12:42:25PM +0200, Jürgen Groß wrote:
> On 07.10.19 22:56, osstest service owner wrote:
> > flight 142383 xen-unstable real [real]
> > http://logs.test-lab.xenproject.org/osstest/logs/142383/
> > 
> > Regressions :-(
> > 
> > Tests which did not succeed and are blocking,
> > including tests which could not be run:
> >   test-amd64-amd64-libvirt-pair 22 guest-migrate/src_host/dst_host fail 
> > REGR. vs. 141822
> >   test-amd64-i386-libvirt-pair 22 guest-migrate/src_host/dst_host fail 
> > REGR. vs. 141822
> 
> Hmm, test log says the guest didn't suspend.
> 
> Could that be related to commit b183e180bce9303 ?

The libvirt libxl daemon spits:

2019-10-07 12:31:09.953+0000: libxl-save-helper: starting save: Success
2019-10-07 12:31:09.953+0000: xc: fd 40, dom 1, flags 1, hvm 0
2019-10-07 12:31:09.954+0000: xc: Saving domain 1, type x86 PV
2019-10-07 12:31:09.954+0000: xc: 64 bits, 4 levels
2019-10-07 12:31:09.959+0000: xc: max_mfn 0x280000
2019-10-07 12:31:09.959+0000: xc: p2m list from 0xffffc90000000000 to 
0xffffc900000fffff, root at 0x27de0a
2019-10-07 12:31:09.959+0000: xc: max_pfn 0x1ffff, p2m_frames 256
2019-10-07 12:31:09.960+0000: xc: Failed to enable logdirty: 22,0,22 (22 = 
Invalid argument): Internal error
2019-10-07 12:31:09.960+0000: xc: Save failed (22 = Invalid argument): Internal 
error
2019-10-07 12:31:09.981+0000: libxl-save-helper: complete r=-1: Invalid argument
2019-10-07 12:31:09.983+0000: libxl: libxl.c:752:libxl__fd_flags_restore: fnctl 
F_SETFL of fd 40 to 0x2
2019-10-07 12:31:09.983+0000: libxl: libxl_event.c:1873:libxl__ao_complete: ao 
0x7f760c002110: complete, rc=-8
2019-10-07 12:31:09.983+0000: libxl: libxl_event.c:1842:libxl__ao__destroy: ao 
0x7f760c002110: destroy

Which seem to be related to the recent iommu changes, I would say it's
likely hitting the is_iommu_enabled check in paging_log_dirty_enable
and hence returning EINVAL.

Adding Paul and Jan who worked on the series.

Roger.

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