Re: [Xen-devel] [xen-unstable test] 65141: regressions - FAIL

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Wed, 2015-12-02 at 10:34 +0000, Ian Campbell wrote:
> 
[...]
> FWIW looking at the different branches in
> Â
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-amd64-qemuu-nested-intel/
> 
> While xen-unstable has started failing on godello1 xen-4.6-testing does
> seem to be passing there.
> 
> The history for the previous job name (before splitting into -intel and
> -amd) also shows a pass on godello1:
> 
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-amd64-qemuu-nested/xen-unstable.html
> 
> Of course this is a new test so there isn't very much historical data to
> draw conclusions from.
> 
> > > We'd appreciate it if you and your colleagues could take a look at
> > > this and analyse the failure.
> > > 
> > > In the meantime the osstest bisector will try to start work on it and
> > > I will report what it discovers.
> 
> According toÂ
> http://osstest.test-lab.xenproject.org/~osstest/pub/results/bisect/xen-un
> stable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1
> --l2.html
> it was unable to reproduce a baseline, probably because it didn't have
> enough historical data.Â

So I have run an adhoc test of the version of Xen tested by flight 64494,
i.e. the one which passed on godello under the old jobÂname test-amd64-
amd64-qemuu-nested but using the new name and current test harness and it
was successful:

http://osstest.test-lab.xenproject.org/~osstest/pub/logs/65301/

I think that ought to give a baseline for the bisector to work with. I'll
prod it to do so.

Given the number of commits I expect this is going to take a little while
to produce results, given that the regression is already a week old it
would be good if the VT-d maintainers could investigate in parallel.

The changes to xen.git in the region are below in case that flags anything
to anyone. Note that other trees have changed as well though.

Ian.

$ git log --oneline d07f63fa6e70..b1d398b67781 
b1d398b x86: allow disabling the emulated local apic
302a851 x86/vlapic: fixes for HVM code when running without a vlapic
0ce647a x86: suppress bogus log message
4243baf HVM/save: allow the usage of zeroextend and a fixup function
fafa16e HVM/save: pass a size parameter to the HVM compat functions
08f3fad build: fix dependencies for files compiled from their parent directory
bdead3f MAINTAINERS: change the vt-d maintainer
b38d426 x86/viridian: flush remote tlbs by hypercall
713b7e4 public/event_channel.h: correct comment
d380b35 x86/boot: check for not allowed sections before linking
c708181 libxc: expose xsaves/xgetbv1/xsavec to hvm guest
460b9a4 x86/xsaves: enable xsaves/xrstors for hvm guest
da62246 x86/xsaves: enable xsaves/xrstors/xsavec in xen
3ebe992 x86/xsaves: using named operand instead numbered operand in xrstor
d9d610d build: remove .d files from xen/ on a clean
1e8193b console: make printk() line continuation tracking per-CPU
2a91f05 xen/arm: vgic-v3: Make clear that GICD_*SPI_* registers are reserved
c38f9e4 xen/arm: vgic-v3: Don't implement write-only register read as zero
cdae22a xen/arm: vgic-v3: Remove spurious return in GICR_INVALLR
833a693 xen/arm: vgic-v3: Emulate read to GICD_ICACTIVER<n>
5482d13 xen/arm: vgic: Re-order the register emulations to match the memory map
49b6d4c xen/arm: vgic-v3: Remove GICR_MOVALLR and GICR_MOVLPIR
a2b83f9 xen/arm: vgic: Properly emulate the full register
84ce5f4 xen/arm: vgic-v3: Only emulate identification registers required by the 
spec
cf1a142 xen/arm: vgic-v3: Use the correct offset GICR_IGRPMODR0
675b68f xen/arm: vgic-v3: Don't try to emulate IROUTER which do not exist in 
the spec
afbbf2c xen/arm: vgic-v2: Implement correctly ICFGR{0, 1} read-only
c4d6bbd xen/arm: vgic-v3: Support 32-bit access for 64-bit registers
423e9ec xen/arm: vgic: Introduce helpers to extract/update/clear/set vGIC 
register ...
5d495f4 xen/arm: vgic: Optimize the way to store the target vCPU in the rank
e99e162 xen/arm: vgic-v2: Don't ignore a write in ITARGETSR if one field is 0
9f5e16e xen/arm: vgic-v2: Handle correctly byte write in ITARGETSR
bc50de8 xen/arm: vgic-v2: Implement correctly ITARGETSR0 - ITARGETSR7 read-only
ca55006 xen/arm: move ticks conversions function declarations to the header file
6c31176 arm: export platform_op XENPF_settime64
f1e5b11 xen: move wallclock functions from x86 to common
7d596f5 x86/VPMU: return correct fixed PMC count
3acb0d6 public/io/netif.h: tidy up and remove duplicate comments
8267253 public/io/netif.h: add definition of gso_prefix flag
19167b1 public/io/netif.h: document the reality of netif_rx_request/reponse
0c3f246 x86/VPMU: Initialize VPMU's lvtpc vector
c03480c x86/vPMU: document as unsupported
9b43668 Merge branch 'staging' of ssh://xenbits.xen.org/home/xen/git/xen into 
staging
9cf5f0a x86/kexec: hide more kexec infrastructure behind CONFIG_KEXEC
0aa684b x86: drop MAX_APICID
c87303c libxl: fix line wrapping issues introduced by automatic replacement
91cee73 libxl: convert libxl__sprintf(gc) to GCSPRINTF
0a62798 tools/hotplug: quote all variables in vif-bridge
26b4f4d docs: Introduce xenstore paths for guest network address information
e8f98cb docs: Introduce xenstore paths for hotplug features
71e64e1 docs: Introduce xenstore paths for PV driver information
85e3b08 docs: Introduce xenstore paths for PV control features
31aa811 get_maintainer: fix perl 5.22/5.24 deprecated/incompatible "\C" use
2dd7eaf tools/libxl: Drop dead code following calls to libxl__exec()
0188415 xen/arm: use masking operation instead of test_bit for MCSF bits
bb4b673 MAINTAINERS: mini-os patches should be copied to minios-devel
969eb34 MINIOS_UPSTREAM_REVISION Update
032dbba Config.mk: Update SEABIOS_UPSTREAM_TAG to rel-1.9.0
cb6be0d sched: get rid of the per domain vCPU list in Credit2
e604225 sched: get rid of the per domain vCPU list in RTDS
6b53bb4 sched: better handle (not) inserting idle vCPUs in runqueues
a8c6c62 sched: clarify use cases of schedule_cpu_switch()
ae2f41e sched: fix locking for insert_vcpu() in credit1 and RTDS
e4fd700 x86/HVM: type adjustments
81a28f1 VMX: fix/adjust trap injection
2bbe500 ACPI 6.0: Add changes for FADT table
975efe1 acpi/NUMA: build NUMA for x86 only
dee1aee VT-d: dump the posted format IRTE
853f8af vt-d: extend struct iremap_entry to support VT-d Posted-Interrupts
0ba0faa VT-d: remove pointless casts
2944689 vmx: initialize VT-d Posted-Interrupts Descriptor
03523ab vmx: add some helper functions for Posted-Interrupts
30e3f32 vmx: extend struct pi_desc to support VT-d Posted-Interrupts
1d028f7 VT-d Posted-Interrupts feature detection
9670e7d iommu: add iommu_intpost to control VT-d Posted-Interrupts feature
d02e84b vVMX: use latched VMCS machine address
3b47431 VMX: allocate VMCS pages from domain heap
827db7b MINIOS_UPSTREAM_REVISION Update
aec3811 tools/libxc: Correct XC_DOM_PAGE_SIZE() to return a long long
225166e libxl: correct bug in domain builder regarding page tables for pvh
c35eefd x86/P2M: consolidate handling of types not requiring a valid MFN
513c203 x86/PoD: tighten conditions for checking super page
65288cf x86/IO-APIC: fix setting of destinations
5ed662e x86: fixes to LAPIC probing
b9730aa ns16550: limit mapped MMIO size
7efcc58 ns16550: reset bar_64 on each iteration
f2d2de5 x86: move some APIC related macros to apicdef.h
e0116ac x86: add cmpxchg16b support
a2b3502 blkif.h: document blkif multi-queue/ring extension

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