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[xen-4.8-testing test] 106728: regressions - FAIL



flight 106728 xen-4.8-testing real [real]
http://logs.test-lab.xenproject.org/osstest/logs/106728/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-armhf-armhf-xl-credit2 15 guest-start/debian.repeat fail REGR. vs. 106659

Regressions which are regarded as allowable (not blocking):
 test-amd64-i386-xl-qemuu-win7-amd64 16 guest-stop             fail like 106659
 test-amd64-amd64-xl-qemut-win7-amd64 16 guest-stop            fail like 106659
 test-amd64-amd64-xl-qemuu-win7-amd64 16 guest-stop            fail like 106659
 test-amd64-i386-xl-qemut-win7-amd64 16 guest-stop             fail like 106659
 test-amd64-amd64-xl-rtds      9 debian-install               fail  like 106659

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
 build-arm64                   5 xen-build                    fail   never pass
 build-arm64-pvops             5 kernel-build                 fail   never pass
 test-amd64-amd64-xl-pvh-intel 11 guest-start                  fail  never pass
 test-amd64-amd64-libvirt-xsm 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
 test-amd64-i386-libvirt      12 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-pvh-amd  11 guest-start                  fail   never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 10 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-armhf-armhf-xl-arndale  12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  13 saverestore-support-check    fail   never pass
 test-amd64-amd64-libvirt-vhd 11 migrate-support-check        fail   never pass
 test-amd64-amd64-qemuu-nested-amd 16 debian-hvm-install/l1/l2  fail never pass
 test-armhf-armhf-xl-rtds     12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     13 saverestore-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-credit2  12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-xsm      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-xsm      13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-cubietruck 12 migrate-support-check        fail never pass
 test-armhf-armhf-libvirt     12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-multivcpu 12 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-cubietruck 13 saverestore-support-check    fail never pass
 test-armhf-armhf-libvirt     13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-multivcpu 13 saverestore-support-check    fail  never pass
 test-armhf-armhf-libvirt-xsm 12 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-xsm 13 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-raw 11 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-raw 12 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                  c75fe6473b73705c9b9f7d8ecc3d043afef55727
baseline version:
 xen                  049b13dce84655cd73ac4acc051e7df46af00a4f

Last test of basis   106659  2017-03-14 12:13:14 Z    2 days
Testing same since   106728  2017-03-16 21:13:23 Z    0 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Andrii Anisov <andrii_anisov@xxxxxxxx>
  Artem Mygaiev <artem_mygaiev@xxxxxxxx>
  Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
  Julien Grall <julien.grall@xxxxxxx>
  Jun Sun <jsun@xxxxxxxxxx>
  Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
  Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>
  Stefano Stabellini <sstabellini@xxxxxxxxxx>
  Steve Capper <steve.capper@xxxxxxxxxx>
  Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
  Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
  Wei Liu <wei.liu2@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-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                 pass    
 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                     pass    
 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                                  fail    
 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                                      pass    
 test-arm64-arm64-libvirt-qcow2                               blocked 
 test-amd64-amd64-xl-qcow2                                    pass    
 test-armhf-armhf-libvirt-raw                                 pass    
 test-amd64-i386-xl-raw                                       pass    
 test-amd64-amd64-xl-rtds                                     fail    
 test-arm64-arm64-xl-rtds                                     blocked 
 test-armhf-armhf-xl-rtds                                     pass    
 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 c75fe6473b73705c9b9f7d8ecc3d043afef55727
Author: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date:   Fri Feb 10 18:05:22 2017 -0800

    arm: read/write rank->vcpu atomically
    
    We don't need a lock in vgic_get_target_vcpu anymore, solving the
    following lock inversion bug: the rank lock should be taken first, then
    the vgic lock. However, gic_update_one_lr is called with the vgic lock
    held, and it calls vgic_get_target_vcpu, which tries to obtain the rank
    lock.
    
    Coverity-ID: 1381855
    Coverity-ID: 1381853
    
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

commit af18ca94f3fdbea87687c07ba532269dbb483e64
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Wed Mar 8 18:06:02 2017 +0000

    xen/arm: p2m: Perform local TLB invalidation on vCPU migration
    
    The ARM architecture allows an OS to have per-CPU page tables, as it
    guarantees that TLBs never migrate from one CPU to another.
    
    This works fine until this is done in a guest. Consider the following
    scenario:
        - vcpu-0 maps P to V
        - vpcu-1 maps P' to V
    
    If run on the same physical CPU, vcpu-1 can hit in TLBs generated by
    vcpu-0 accesses, and access the wrong physical page.
    
    The solution to this is to keep a per-p2m map of which vCPU ran the last
    on each given pCPU and invalidate local TLBs if two vPCUs from the same
    VM run on the same CPU.
    
    Unfortunately it is not possible to allocate per-cpu variable on the
    fly. So for now the size of the array is NR_CPUS, this is fine because
    we still have space in the structure domain. We may want to add an
    helper to allocate per-cpu variable in the future.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 30c2dd762bcf938475632e28fcbd8d6592a71d5d
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 1780ea794780cf410fcb857d83add72ee088ff6e
Author: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
Date:   Mon Feb 1 14:56:13 2016 +0530

    xen/arm: Set nr_cpu_ids to available number of cpus
    
    nr_cpu_ids for arm platforms is incorrectly set to NR_CPUS
    irrespective of the number of cpus supported by platform.
    
    Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 42290f02715e62bfe9edf32daac1b224758b7ae4
Author: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
Date:   Thu Jan 26 14:16:02 2017 +0100

    xen/arm: acpi: Relax hw domain mapping attributes to p2m_mmio_direct_c
    
    Since the hardware domain is a trusted domain, we extend the
    trust to include making final decisions on what attributes to
    use when mapping memory regions.
    
    For ACPI configured hardware domains, this patch relaxes the hardware
    domains mapping attributes to p2m_mmio_direct_c. This will allow the
    hardware domain to control the attributes via its S1 mappings.
    
    Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit bd684c2d0aae7edc587f8dfd3dbffef739c853e4
Author: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
Date:   Thu Jan 26 14:16:01 2017 +0100

    Revert "xen/arm: Map mmio-sram nodes as un-cached memory"
    
    This reverts commit 1e75ed8b64bc1a9b47e540e6f100f17ec6d97f1b.
    
    The default attribute mapping for MMIO as been relaxed and now rely on
    the hardware domain to set the correct memory attribute
    
    Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 783b67073f4e0348af617a1f470f991814254ae2
Author: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
Date:   Thu Jan 26 14:16:00 2017 +0100

    xen/arm: dt: Relax hw domain mapping attributes to p2m_mmio_direct_c
    
    Since the hardware domain is a trusted domain, we extend the
    trust to include making final decisions on what attributes to
    use when mapping memory regions.
    
    For device-tree configured hardware domains, this patch relaxes
    the hardware domains mapping attributes to p2m_mmio_direct_c.
    This will allow the hardware domain to control the attributes
    via its S1 mappings.
    
    Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 07f9ddfc9abe9d25288168dfe3c4b830b416f33b
Author: Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
Date:   Fri Jan 27 11:25:23 2017 -0700

    xen/arm: flush icache as well when XEN_DOMCTL_cacheflush is issued
    
    When the toolstack modifies memory of a running ARM VM it may happen
    that the underlying memory of a current vCPU PC is changed. Without
    flushing the icache the vCPU may continue executing stale instructions.
    
    Also expose the xc_domain_cacheflush through xenctrl.h.
    
    Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit d31d0cd810b038f4711553d07b26aee6f4b80934
Author: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date:   Wed Dec 21 18:15:10 2016 -0800

    xen/arm: fix GIC_INVALID_LR
    
    GIC_INVALID_LR should be 0xff, but actually, defined as ~(uint8_t)0, is
    0xffffffff. Fix the problem by placing the ~ operator before the cast.
    
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

commit b2e678e81dd9635eb33279e2817168d13b78c1fa
Author: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date:   Thu Dec 8 17:17:04 2016 -0800

    fix out of bound access to mode_strings
    
    mode == ARRAY_SIZE(mode_strings) causes an out of bound access to
    the mode_strings array.
    
    Coverity-ID: 1381859
    
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

commit 05946b58420c693748366b7c6f71ec2ec2456242
Author: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date:   Thu Dec 8 16:59:28 2016 -0800

    missing vgic_unlock_rank in gic_remove_irq_from_guest
    
    Add missing vgic_unlock_rank on the error path in
    gic_remove_irq_from_guest.
    
    Coverity-ID: 1381843
    
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

commit e020ff3fff796459399015460929edefa8c94568
Author: Artem Mygaiev <artem_mygaiev@xxxxxxxx>
Date:   Tue Dec 6 16:16:45 2016 +0200

    xen/arm: Fix macro for ARM Jazelle CPU feature identification
    
    Fix macro for ARM Jazelle CPU feature identification: value of 0 indicates
    that CPU does not support ARM Jazelle (ID_PFR0[11:8])
    
    Coverity-ID: 1381849
    
    Signed-off-by: Artem Mygaiev <artem_mygaiev@xxxxxxxx>
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>

commit 308c646ee6f11fa87d67343005942a3186a69206
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Mon Dec 5 17:43:23 2016 +0000

    xen/arm: traps: Emulate ICC_SRE_EL1 as RAZ/WI
    
    Recent Linux kernel (4.4 and onwards [1]) is checking whether it is possible
    to enable sysreg access (ICC_SRE_EL1.SRE) when the ID register
    (ID_AA64PRF0_EL1.GIC) is reporting the presence of the sysreg interface.
    
    When the guest has been configured to use GICv2, the hypervisor will
    disable sysreg access for this vm (via ICC_SRE_EL2.Enable) and therefore
    access to system register such as ICC_SRE_EL1 are trapped in EL2.
    
    However, ICC_SRE_EL1 is not emulated by the hypervisor. This means that
    Linux will crash as soon as it is trying to access ICC_SRE_EL1.
    
    To solve this problem, Xen can implement ICC_SRE_EL1 as read-as-zero
    write-ignore. The emulation will only be used when sysreg are disabled
    for EL1.
    
    [1]  963fcd409 "arm64: cpufeatures: Check ICC_EL1_SRE.SRE before
    enabling ARM64_HAS_SYSREG_GIC_CPUIF"
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit fceae911f6e7af87cd31321385d779b47eff1857
Author: Artem Mygaiev <artem_mygaiev@xxxxxxxx>
Date:   Wed Nov 30 15:53:11 2016 +0200

    xen/arm: Fix misplaced parentheses for PSCI version check
    
    Fix misplaced parentheses for PSCI version check
    
    Signed-off-by: Artem Mygaiev <artem_mygaiev@xxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit f66739326c9de51acc15e8b6b335b3781b4e3f48
Author: Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>
Date:   Fri Dec 2 18:38:16 2016 +0200

    arm/irq: Reorder check when the IRQ is already used by someone
    
    Call irq_get_domain for the IRQ we are interested in
    only after making sure that it is the guest IRQ to avoid
    ASSERT(test_bit(_IRQ_GUEST, &desc->status)) triggering.
    
    Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
    Signed-off-by: Andrii Anisov <andrii_anisov@xxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

commit 768b250b31361bf8acfef4b7dca61ee37c91f3f6
Author: Jun Sun <jsun@xxxxxxxxxx>
Date:   Mon Oct 10 12:27:56 2016 -0700

    Don't clear HCR_VM bit when updating VTTBR.
    
    Currently function p2m_restore_state() would clear HCR_VM bit, i.e.,
    disabling stage2 translation, before updating VTTBR register. After
    some research and talking to ARM support, I got confirmed that this is not
    necessary. We are currently working on a new platform that would need this
    to be removed.
    
    The patch is tested on FVP foundation model.
    
    Signed-off-by: Jun Sun <jsun@xxxxxxxxxx>
    Acked-by: Steve Capper <steve.capper@xxxxxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
(qemu changes not included)

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