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[xen-unstable test] 106561: regressions - FAIL



flight 106561 xen-unstable real [real]
http://logs.test-lab.xenproject.org/osstest/logs/106561/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-i386-xl-qemut-debianhvm-amd64-xsm 9 debian-hvm-install fail REGR. 
vs. 106534
 test-amd64-i386-xl-qemut-debianhvm-amd64 15 guest-localmigrate/x10 fail REGR. 
vs. 106534
 test-amd64-amd64-pygrub       9 debian-di-install        fail REGR. vs. 106534
 test-amd64-i386-xl-raw      18 guest-start/debian.repeat fail REGR. vs. 106534
 test-armhf-armhf-libvirt-raw  9 debian-di-install        fail REGR. vs. 106534

Regressions which are regarded as allowable (not blocking):
 test-armhf-armhf-xl-rtds      4 host-ping-check-native   fail REGR. vs. 106534
 test-amd64-amd64-xl-qemut-win7-amd64 16 guest-stop            fail like 106534
 test-amd64-i386-xl-qemuu-win7-amd64 16 guest-stop             fail like 106534
 test-amd64-i386-xl-qemut-win7-amd64 16 guest-stop             fail like 106534
 test-amd64-amd64-xl-qemuu-win7-amd64 16 guest-stop            fail like 106534
 test-armhf-armhf-libvirt     13 saverestore-support-check    fail  like 106534
 test-armhf-armhf-libvirt-xsm 13 saverestore-support-check    fail  like 106534
 test-amd64-amd64-xl-rtds      9 debian-install               fail  like 106534

Tests which did not succeed, but are not blocking:
 test-arm64-arm64-libvirt-xsm  1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl           1 build-check(1)               blocked  n/a
 build-arm64-libvirt           1 build-check(1)               blocked  n/a
 test-arm64-arm64-libvirt-qcow2  1 build-check(1)               blocked  n/a
 test-arm64-arm64-libvirt      1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-credit2   1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-rtds      1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-multivcpu  1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-xsm       1 build-check(1)               blocked  n/a
 test-amd64-amd64-xl-pvh-amd  11 guest-start                  fail   never pass
 test-amd64-amd64-xl-pvh-intel 11 guest-start                  fail  never pass
 test-amd64-i386-libvirt      12 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt-xsm  12 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt     12 migrate-support-check        fail   never pass
 build-arm64                   5 xen-build                    fail   never pass
 test-amd64-amd64-libvirt-xsm 12 migrate-support-check        fail   never pass
 build-arm64-xsm               5 xen-build                    fail   never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 10 migrate-support-check 
fail never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 10 migrate-support-check 
fail never pass
 build-arm64-pvops             5 kernel-build                 fail   never pass
 test-amd64-amd64-qemuu-nested-amd 16 debian-hvm-install/l1/l2  fail never pass
 test-amd64-amd64-libvirt-vhd 11 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-cubietruck 12 migrate-support-check        fail never pass
 test-armhf-armhf-xl-cubietruck 13 saverestore-support-check    fail never pass
 test-armhf-armhf-xl-multivcpu 12 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 13 saverestore-support-check    fail  never pass
 test-armhf-armhf-xl-credit2  12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-xsm      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-xsm      13 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt     12 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-xsm 12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-vhd      11 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      12 saverestore-support-check    fail   never pass

version targeted for testing:
 xen                  bd8451964078b006081fcef6d169961a3a6f746a
baseline version:
 xen                  4036e7c592905c2292cdeba8269e969959427237

Last test of basis   106534  2017-03-07 19:14:51 Z    1 days
Failing since        106547  2017-03-08 08:59:30 Z    1 days    2 attempts
Testing same since   106561  2017-03-09 00:44:57 Z    0 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Christoph Egger <chegger@xxxxxxxxx>
  Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Julien Grall <julien.grall@xxxxxxx>
  Paul Durrant <paul.durrant@xxxxxxxxxx>

jobs:
 build-amd64-xsm                                              pass    
 build-arm64-xsm                                              fail    
 build-armhf-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-arm64                                                  fail    
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-arm64-libvirt                                          blocked 
 build-armhf-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-oldkern                                          pass    
 build-i386-oldkern                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 build-arm64-pvops                                            fail    
 build-armhf-pvops                                            pass    
 build-i386-pvops                                             pass    
 build-amd64-rumprun                                          pass    
 build-i386-rumprun                                           pass    
 test-xtf-amd64-amd64-1                                       pass    
 test-xtf-amd64-amd64-2                                       pass    
 test-xtf-amd64-amd64-3                                       pass    
 test-xtf-amd64-amd64-4                                       pass    
 test-xtf-amd64-amd64-5                                       pass    
 test-amd64-amd64-xl                                          pass    
 test-arm64-arm64-xl                                          blocked 
 test-armhf-armhf-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64-xsm                 fail    
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm           pass    
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm            pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-xsm                 pass    
 test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm        pass    
 test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm         pass    
 test-amd64-amd64-libvirt-xsm                                 pass    
 test-arm64-arm64-libvirt-xsm                                 blocked 
 test-armhf-armhf-libvirt-xsm                                 pass    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-arm64-arm64-xl-xsm                                      blocked 
 test-armhf-armhf-xl-xsm                                      pass    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-amd64-xl-pvh-amd                                  fail    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64                     fail    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64                     pass    
 test-amd64-i386-freebsd10-amd64                              pass    
 test-amd64-amd64-xl-qemuu-ovmf-amd64                         pass    
 test-amd64-i386-xl-qemuu-ovmf-amd64                          pass    
 test-amd64-amd64-rumprun-amd64                               pass    
 test-amd64-amd64-xl-qemut-win7-amd64                         fail    
 test-amd64-i386-xl-qemut-win7-amd64                          fail    
 test-amd64-amd64-xl-qemuu-win7-amd64                         fail    
 test-amd64-i386-xl-qemuu-win7-amd64                          fail    
 test-armhf-armhf-xl-arndale                                  pass    
 test-amd64-amd64-xl-credit2                                  pass    
 test-arm64-arm64-xl-credit2                                  blocked 
 test-armhf-armhf-xl-credit2                                  pass    
 test-armhf-armhf-xl-cubietruck                               pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-i386-rumprun-i386                                 pass    
 test-amd64-amd64-qemuu-nested-intel                          pass    
 test-amd64-amd64-xl-pvh-intel                                fail    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-arm64-arm64-libvirt                                     blocked 
 test-armhf-armhf-libvirt                                     pass    
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 test-arm64-arm64-xl-multivcpu                                blocked 
 test-armhf-armhf-xl-multivcpu                                pass    
 test-amd64-amd64-pair                                        pass    
 test-amd64-i386-pair                                         pass    
 test-amd64-amd64-libvirt-pair                                pass    
 test-amd64-i386-libvirt-pair                                 pass    
 test-amd64-amd64-amd64-pvgrub                                pass    
 test-amd64-amd64-i386-pvgrub                                 pass    
 test-amd64-amd64-pygrub                                      fail    
 test-arm64-arm64-libvirt-qcow2                               blocked 
 test-amd64-amd64-xl-qcow2                                    pass    
 test-armhf-armhf-libvirt-raw                                 fail    
 test-amd64-i386-xl-raw                                       fail    
 test-amd64-amd64-xl-rtds                                     fail    
 test-arm64-arm64-xl-rtds                                     blocked 
 test-armhf-armhf-xl-rtds                                     fail    
 test-amd64-i386-xl-qemut-winxpsp3-vcpus1                     pass    
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1                     pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      pass    
 test-amd64-amd64-xl-qemut-winxpsp3                           pass    
 test-amd64-i386-xl-qemut-winxpsp3                            pass    
 test-amd64-amd64-xl-qemuu-winxpsp3                           pass    
 test-amd64-i386-xl-qemuu-winxpsp3                            pass    


------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images

Logs, config files, etc. are available at
    http://logs.test-lab.xenproject.org/osstest/logs

Explanation of these reports, and of osstest in general, is at
    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master

Test harness code can be found at
    http://xenbits.xen.org/gitweb?p=osstest.git;a=summary


Not pushing.

------------------------------------------------------------
commit bd8451964078b006081fcef6d169961a3a6f746a
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 18:06:01 2017 +0000

    xen/arm: Introduce INVALID_VCPU_ID
    
    Define INVALID_VCPU_ID as MAX_VIRT_CPUS to avoid casting problem later
    on. At the moment it can always fit in uint8_t.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit e29d37da55f842e17dd95d17aca6a1c7b6fde705
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 18:06:00 2017 +0000

    xen/arm: hvm_domain does not need to be cacheline aligned
    
    hvm_domain only contains the HVM_PARAM that on ARM are not used often.
    So it is not necessary to have hvm_domain fitting in a cacheline. Drop
    it to save 128 bytes in the structure arch_domain.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 60c005c78c41be8d39690879068e52679d45edf5
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 17:54:36 2017 +0000

    xen/arm: acpi: Move the ACPI banks in bootinfo
    
    Currently the acpi banks are stored in a separate variable and have an
    header just for them.
    
    This variable can be moved in the structure bootinfo removing an header
    and a global variable.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 792aba23a5cc6f87e8ba8f18799f522e33815bf1
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 17:54:35 2017 +0000

    xen/arm: efi: Rework acpi_create_efi_mmap_table to avoid memory_map[offset]
    
    The code contains a lot of memory_map[offset]. This could be simplified
    by incrementing the descriptor pointer every time.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit d229f7de70610a1983842e7a113db26c053bc592
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 17:54:34 2017 +0000

    xen/arm: efi: Avoid duplicating the addition of a new efi memory descriptor
    
    The code to add a new memory descriptor is duplicated three times. Add a
    new helper that adds the descriptor.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 2c277ddb77ba054bb8c4c882d98618556d334f12
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 17:54:33 2017 +0000

    xen/arm: efi: Avoid duplicating the addition of a new bank
    
    The code to add a new bank is duplicated twice. Add a new helper that
    checks if the maximum of bank has not reached and adds the bank.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 4cb22710d42a425b811fab622ced8ec622858116
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Wed Mar 8 15:19:02 2017 +0100

    x86: drop underscore prefixed 32-bit register names
    
    Now that all underscore prefixed instances have been replaced, this
    concludes the register renaming project.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit ca8cdc176a3f1785f907ed7fcf410412036f77a4
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Wed Mar 8 15:15:19 2017 +0100

    x86/hypercall: switch away from temporary 32-bit register names
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 1ecc8fd1660a8448840713bc917a4bab89fc43b9
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Wed Mar 8 15:14:43 2017 +0100

    x86emul: switch away from temporary 32-bit register names
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 0489efef749e064efd0eba5fb45cf9f229fb22aa
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:11:06 2017 +0100

    x86/mce: remove ASSERT's about mce_[u|d]handler_num in mce_action()
    
    Those assertions as well as mce_[u|d]handlers[], mce_[u|d]handler_num
    and mce_action() were intel only and lifted to the common code by c/s
    3a91769d6e1. However, MCE handling on AMD does not use mce_[u|d]handlers[]
    before and after that commit, so assertions in mce_action() about their
    size do not make sense for AMD. To be worse, they can crash the debug
    build on AMD. Remove them to make the debug build work on AMD.
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 6fd56bc825e633470fb0807785cd32dbee8182a6
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:10:45 2017 +0100

    x86/mce: clear MSR_IA32_MCG_STATUS by writing 0
    
    On Intel CPU, an attemp to write to MSR_IA32_MCG_STATUS with any
    non-zero value would result in #GP.
    
    This commit writes 0 on AMD CPU as well instead of just clearing MCIP
    bit, because all non-reserved bits of MSR_IA32_MCG_STATUS have been
    handled at this point.
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

commit 795b988e7c3d271c9472d4b9150b57a3e5b5a50b
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:10:29 2017 +0100

    x86/vmce: fill MSR_IA32_MCG_STATUS on all vcpus in broadcast case
    
    The current implementation only fills MC MSRs on vcpu0 and leaves MC
    MSRs on other vcpus empty in the broadcast case. When guest reads 0
    from MSR_IA32_MCG_STATUS on vcpuN (N > 0), it may think it's not
    possible to recover the execution on that vcpu and then get panic,
    although MSR_IA32_MCG_STATUS filled on vcpu0 may imply the injected
    vMCE is actually recoverable. To avoid such unnecessary guest panic,
    set MSR_IA32_MCG_STATUS on vcpuN (N > 0) to MCG_STATUS_MCIP|MCG_STATUS_RIPV.
    
    In addition, fill_vmsr_data(mc_bank, ...) is changed to return -EINVAL
    rather than 0, if an invalid domain ID is contained in mc_bank.
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 2bb81abf0430cbe9a7d4dd29f32ee1d0b47a16d7
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:10:06 2017 +0100

    x86/mce: set mcinfo_comm.type and .size in x86_mcinfo_reserve()
    
    All existing calls to x86_mcinfo_reserve() are followed by statements
    that set the size and the type of the reserved space, so move them into
    x86_mcinfo_reserve() to simplify the code.
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 9dfba75334d31aa09a66ff5476ddf16595a41697
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:09:46 2017 +0100

    x86/mce: remove unused x86_mcinfo_add()
    
    c/s 9d13fd9fd320a7740c6446c048ff6a2990095966 turned to update the
    mcinfo buffer in-place instead of using x86_mcinfo_add(). The last
    uses of x86_mcinfo_add() were removed by that commit as well.
    Therefore, x86_mcinfo_add() was deprecated in fact.
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit f735aa5356afef66bc0d3b8fc645955006aebc0d
Author: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
Date:   Wed Mar 8 15:09:16 2017 +0100

    x86/mce: adjust comment of callback register functions
    
    c/s e966818264908e842e2847f579ca4d94e586eaac added
    mce_need_clearbank_register below the comment of
    x86_mce_callback_register(). This commit (1) adjusts the first
    paragraph of comment to be a general statement of all callback
    register functions, and (2) moves the second paragraph to the
    front of x86_mce_callback_register().
    
    Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
    Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

commit bf118558984ebd42843bc81f873b3f378aca4fdd
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Wed Mar 8 15:07:41 2017 +0100

    x86/MCE: sanitize domain/vcpu ID handling
    
    Storing -1 into both fields was misleading consumers: We really should
    have a manifest constant for "invalid vCPU" here, and the already
    existing DOMID_INVALID should be used.
    
    Also correct a bogus (dead code) check in mca_init_global(), at once
    introducing a manifest constant for the early boot "invalid vCPU"
    pointer (avoiding proliferation of the open coding). Make that pointer
    a non-canonical address at once.
    
    Finally, don't leave mc_domid uninitialized in mca_init_bank().
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 7b726df89c2ec55aeb19cd37395777091c1c32fa
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Wed Mar 8 15:07:14 2017 +0100

    MAINTAINERS: drop Christoph Egger
    
    Other Amazon folks indicate he's not available as a maintainer anymore
    at this point in time. Maintenance of the MCE sub-component will fall
    back to the x86 maintainers.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Christoph Egger <chegger@xxxxxxxxx>

commit f9adc1e66098e96861af49ca2d5a223ad654dec6
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Tue Mar 7 23:32:24 2017 +0000

    x86/emul: Avoid #UD in SIMD stubs
    
    v{,u}comis{s,d}, and vcvt{,t}s{s,d}2si are two-operand instructions, while
    vzero{all,upper} take no operands.  Each require vex.reg set to ~0 to avoid
    suffering #UD.
    
    Spotted while fuzzing with AFL
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 4361e80d228655b100bae5d19b489b39d20aa68d
Author: Paul Durrant <paul.durrant@xxxxxxxxxx>
Date:   Tue Mar 7 14:58:04 2017 +0000

    vlapic/viridian: abort existing APIC assist if any vector is pending in ISR
    
    The vlapic code already aborts an APIC assist if an interrupt is deferred
    because a higher priority interrupt has already been delivered (and hence
    its vector is pending in the ISR).
    
    However, it is also necessary to abort an APIC assist in the case where a
    higher priority is about to be delivered because, in either case, at least
    two vectors will be pending in the ISR and hence an EOI is necessary.
    
    Also, following on from the above reasoning, the decision to start a new
    APIC assist should clearly be based upon whether any other vector is
    pending in the ISR, regardless of whether it is lower or higher in
    priority. (In fact the code in question cannot be reached if the
    vector is lower in priority). Thus the single use of
    vlapic_find_lowest_vector() can be replaced with a call to
    vlapic_find_highest_isr() and the former function removed.
    
    Without this patch, because the logic is flawed, a domain_crash() results
    when an attempt is made to erroneously start a new APIC assist.
    
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit c2e316b2f220af06dab76b1219e61441c31f6ff9
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Mon Mar 6 10:29:17 2017 +0000

    x86/emul: Correct the decoding of mov to/from cr/dr
    
    The mov to/from cr/dr behave as if they were encoded with Mod = 3.  When
    encoded with Mod != 3, no displacement or SIB bytes are fetched.
    
    Add a test with a deliberately malformed ModRM byte.  (Also add the
    automatically-generated simd.h to .gitignore.)
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
(qemu changes not included)

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