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[xen-unstable test] 148685: regressions - trouble: fail/pass/starved



flight 148685 xen-unstable real [real]
http://logs.test-lab.xenproject.org/osstest/logs/148685/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-armhf-armhf-xl-credit1   7 xen-boot                 fail REGR. vs. 148611
 test-amd64-amd64-dom0pvh-xl-intel 16 guest-localmigrate  fail REGR. vs. 148611
 test-armhf-armhf-xl-vhd      18 leak-check/check         fail REGR. vs. 148611

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-xl-rtds     18 guest-localmigrate/x10       fail  like 148571
 test-amd64-amd64-qemuu-nested-intel 17 debian-hvm-install/l1/l2 fail like 
148611
 test-amd64-amd64-xl-qemuu-win7-amd64 17 guest-stop            fail like 148611
 test-armhf-armhf-libvirt     14 saverestore-support-check    fail  like 148611
 test-armhf-armhf-libvirt-raw 13 saverestore-support-check    fail  like 148611
 test-amd64-amd64-xl-qemut-win7-amd64 17 guest-stop            fail like 148611
 test-amd64-i386-xl-qemut-win7-amd64 17 guest-stop             fail like 148611
 test-amd64-i386-xl-qemuu-win7-amd64 17 guest-stop             fail like 148611
 test-amd64-amd64-xl-qemuu-ws16-amd64 17 guest-stop            fail like 148611
 test-amd64-amd64-xl-qemut-ws16-amd64 17 guest-stop            fail like 148611
 test-amd64-i386-xl-qemuu-ws16-amd64 17 guest-stop             fail like 148611
 test-amd64-i386-libvirt      13 migrate-support-check        fail   never pass
 test-amd64-i386-xl-pvshim    12 guest-start                  fail   never pass
 test-amd64-i386-libvirt-xsm  13 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-arm64-arm64-xl-xsm      13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-xsm      14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl-credit2  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-credit2  14 saverestore-support-check    fail   never pass
 test-amd64-amd64-libvirt     13 migrate-support-check        fail   never pass
 test-arm64-arm64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-arm64-arm64-libvirt-xsm 14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl          13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl          14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl-credit1  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-credit1  14 saverestore-support-check    fail   never pass
 test-amd64-amd64-libvirt-vhd 12 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-thunderx 13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-thunderx 14 saverestore-support-check    fail   never pass
 test-amd64-amd64-qemuu-nested-amd 17 debian-hvm-install/l1/l2  fail never pass
 test-armhf-armhf-xl          13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-cubietruck 13 migrate-support-check        fail never pass
 test-armhf-armhf-xl-cubietruck 14 saverestore-support-check    fail never pass
 test-armhf-armhf-xl-rtds     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-raw 12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      13 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl-seattle  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-seattle  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-multivcpu 13 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 14 saverestore-support-check    fail  never pass
 test-armhf-armhf-xl-credit2  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-arndale  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  14 saverestore-support-check    fail   never pass
 test-amd64-i386-xl-qemut-ws16-amd64 17 guest-stop              fail never pass
 test-amd64-amd64-dom0pvh-xl-amd  2 hosts-allocate               starved  n/a

version targeted for testing:
 xen                  1faa954df18733792c33b3f5b1b4de4662cfa892
baseline version:
 xen                  d094e95fb7c61c5f46d8e446b4bdc028438dea1c

Last test of basis   148611  2020-03-16 01:51:12 Z    2 days
Failing since        148636  2020-03-16 18:36:29 Z    1 days    3 attempts
Testing same since   148685  2020-03-18 02:40:34 Z    0 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Juergen Gross <jgross@xxxxxxxx>
  Julien Grall <jgrall@xxxxxxxxxx>
  Wei Liu <wl@xxxxxxx>

jobs:
 build-amd64-xsm                                              pass    
 build-arm64-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-arm64                                                  pass    
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-arm64-libvirt                                          pass    
 build-armhf-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 build-arm64-pvops                                            pass    
 build-armhf-pvops                                            pass    
 build-i386-pvops                                             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                                          pass    
 test-armhf-armhf-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm           pass    
 test-amd64-i386-libvirt-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-xl-qemut-debianhvm-i386-xsm                 pass    
 test-amd64-i386-xl-qemut-debianhvm-i386-xsm                  pass    
 test-amd64-amd64-xl-qemuu-debianhvm-i386-xsm                 pass    
 test-amd64-i386-xl-qemuu-debianhvm-i386-xsm                  pass    
 test-amd64-amd64-libvirt-xsm                                 pass    
 test-arm64-arm64-libvirt-xsm                                 pass    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-arm64-arm64-xl-xsm                                      pass    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-amd64-xl-pvhv2-amd                                pass    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-amd64-dom0pvh-xl-amd                              starved 
 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-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-amd64-amd64-xl-qemut-ws16-amd64                         fail    
 test-amd64-i386-xl-qemut-ws16-amd64                          fail    
 test-amd64-amd64-xl-qemuu-ws16-amd64                         fail    
 test-amd64-i386-xl-qemuu-ws16-amd64                          fail    
 test-armhf-armhf-xl-arndale                                  pass    
 test-amd64-amd64-xl-credit1                                  pass    
 test-arm64-arm64-xl-credit1                                  pass    
 test-armhf-armhf-xl-credit1                                  fail    
 test-amd64-amd64-xl-credit2                                  pass    
 test-arm64-arm64-xl-credit2                                  pass    
 test-armhf-armhf-xl-credit2                                  pass    
 test-armhf-armhf-xl-cubietruck                               pass    
 test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict        pass    
 test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict         pass    
 test-amd64-amd64-examine                                     pass    
 test-arm64-arm64-examine                                     pass    
 test-armhf-armhf-examine                                     pass    
 test-amd64-i386-examine                                      pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-amd64-qemuu-nested-intel                          fail    
 test-amd64-amd64-xl-pvhv2-intel                              pass    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-dom0pvh-xl-intel                            fail    
 test-amd64-amd64-libvirt                                     pass    
 test-armhf-armhf-libvirt                                     pass    
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-livepatch                                   pass    
 test-amd64-i386-livepatch                                    pass    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 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-xl-pvshim                                   pass    
 test-amd64-i386-xl-pvshim                                    fail    
 test-amd64-amd64-pygrub                                      pass    
 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-armhf-armhf-xl-rtds                                     pass    
 test-arm64-arm64-xl-seattle                                  pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow             pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow              pass    
 test-amd64-amd64-xl-shadow                                   pass    
 test-amd64-i386-xl-shadow                                    pass    
 test-arm64-arm64-xl-thunderx                                 pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      fail    


------------------------------------------------------------
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 1faa954df18733792c33b3f5b1b4de4662cfa892
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:20:08 2020 +0100

    libfdt: fix undefined behaviour in _fdt_splice()
    
    Along the lines of commit d0b3ab0a0f46 ("libfdt: Fix undefined behaviour
    in fdt_offset_ptr()"), _fdt_splice() similarly may not use pointer
    arithmetic to do overflow checks.
    
    [upstream commit 73d6e9ecb4179b510408bc526240f829262df361]
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

commit 66fb1406568c7e582dbd5ffd8f3b8a8350146960
Author: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Date:   Tue Mar 17 16:18:57 2020 +0100

    libfdt: Fix undefined behaviour in fdt_offset_ptr()
    
    Using pointer arithmetic to generate a pointer outside a known object is,
    technically, undefined behaviour in C.  Unfortunately, we were using that
    in fdt_offset_ptr() to detect overflows.
    
    To fix this we need to do our bounds / overflow checking on the offsets
    before constructing pointers from them.
    
    Reported-by: David Binderman <dcb314@xxxxxxxxxxx>
    Signed-off-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
    [upstream commit d0b3ab0a0f46ac929b4713da46f7fdcd893dd3bd]
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

commit 75c5fc0c7cefe50b6052c0b933186c4597ade70f
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:18:08 2020 +0100

    x86: reduce mce.h include dependencies
    
    Drop the public header #include as not needed by the header itself. Add
    one that was missing, and move all inside the inclusion guard.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 12f0c69f2709fdb0dd5ac408484a4a08d08705e9
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:17:20 2020 +0100

    x86/HVM: reduce hvm.h include dependencies
    
    Drop #include-s not needed by the header itself, and add smaller scope
    ones instead. Put the ones needed into whichever other files actually
    need them.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Paul Durrant <paul@xxxxxxx>
    Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 169e8ec401c9485886a733de7f0191a5aae08a12
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:16:34 2020 +0100

    x86/HVM: reduce io.h include dependencies
    
    Drop #include-s not needed by the header itself as well as one include
    of the header which isn't needed. Put the one needed into the file
    actually requiring it.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 2f661954e8512f08e58db3c285b5515fee414c95
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:15:49 2020 +0100

    x86/HVM: reduce vlapic.h include dependencies
    
    Drop #include-s not needed by the header itself.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 79834d25f5cdfb1e14646c59720c53917c2713e6
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:14:57 2020 +0100

    x86/HVM: reduce vioapic.h include dependencies
    
    Drop an #include not needed by the header itself. While verifying the
    header (now) builds standalone, I noticed an omission in a public header
    which gets taken care of here as well.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit e593df9509b53ef26999f84e32e181b0f6e51e8f
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:14:05 2020 +0100

    x86/HVM: reduce vpic.h include dependencies
    
    Drop an #include not needed by the header itself.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit bf66bb0573a3b7101cecd338bae422928bbf5c83
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:13:20 2020 +0100

    x86/HVM: reduce vpt.h include dependencies
    
    Drop #include-s not needed by the header itself.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit a37bf6ff1284e6897a6f51130f12905ec1351705
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:12:26 2020 +0100

    x86/HVM: reduce vcpu.h include dependencies
    
    Drop #include-s not needed by the header itself. Put the ones needed
    into whichever other files actually need them.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Paul Durrant <paul@xxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 90d9a9884292eacce4f6fa9e54cbdeb3e0125c4d
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Mar 17 16:11:33 2020 +0100

    x86/HVM: reduce domain.h include dependencies
    
    Drop #include-s not needed by the header itself. Put the ones needed
    into whichever other files actually need them.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Paul Durrant <paul@xxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 900cc67377b987f50e2b8c14f9fdac6ab508bd04
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Wed Mar 11 18:22:37 2020 +0000

    x86/vvmx: Fix deadlock with MSR bitmap merging
    
    c/s c47984aabead "nvmx: implement support for MSR bitmaps" introduced a use 
of
    map_domain_page() which may get used in the middle of context switch.
    
    This is not safe, and causes Xen to deadlock on the mapcache lock:
    
      (XEN) Xen call trace:
      (XEN)    [<ffff82d08022d6ae>] R _spin_lock+0x34/0x5e
      (XEN)    [<ffff82d0803219d7>] F map_domain_page+0x250/0x527
      (XEN)    [<ffff82d080356332>] F do_page_fault+0x420/0x780
      (XEN)    [<ffff82d08038da3d>] F 
x86_64/entry.S#handle_exception_saved+0x68/0x94
      (XEN)    [<ffff82d08031729f>] F __find_next_zero_bit+0x28/0x69
      (XEN)    [<ffff82d080321a4d>] F map_domain_page+0x2c6/0x527
      (XEN)    [<ffff82d08029eeb2>] F nvmx_update_exec_control+0x1d7/0x323
      (XEN)    [<ffff82d080299f5a>] F vmx_update_cpu_exec_control+0x23/0x40
      (XEN)    [<ffff82d08029a3f7>] F 
arch/x86/hvm/vmx/vmx.c#vmx_ctxt_switch_from+0xb7/0x121
      (XEN)    [<ffff82d08031d796>] F 
arch/x86/domain.c#__context_switch+0x124/0x4a9
      (XEN)    [<ffff82d080320925>] F context_switch+0x154/0x62c
      (XEN)    [<ffff82d080252f3e>] F 
common/sched/core.c#sched_context_switch+0x16a/0x175
      (XEN)    [<ffff82d080253877>] F common/sched/core.c#schedule+0x2ad/0x2bc
      (XEN)    [<ffff82d08022cc97>] F common/softirq.c#__do_softirq+0xb7/0xc8
      (XEN)    [<ffff82d08022cd38>] F do_softirq+0x18/0x1a
      (XEN)    [<ffff82d0802a2fbb>] F vmx_asm_do_vmentry+0x2b/0x30
    
    Convert the domheap page into being a xenheap page.
    
    Fixes: c47984aabead - nvmx: implement support for MSR bitmaps
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>

commit 740ffb7fc7b9d1afa23bb38910913279c28aa991
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Mon Mar 16 17:32:41 2020 +0100

    x86/APIC: reduce rounding errors in calculations
    
    Dividing by HZ/10 just to subsequently multiply by HZ again in all uses
    of the respective variable is pretty pointlessly introducing rounding
    (really: truncation) errors. While transforming the respective
    expressions it became apparent that "result" would be left unused except
    for its use as function return value. As the sole caller of the function
    doesn't look at the returned value, simply convert the function to have
    "void" return type.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit a60bb682190f8c0147584fa58de47528cd866be3
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Mon Mar 16 17:31:35 2020 +0100

    x86/time: reduce rounding errors in calculations
    
    Plain (unsigned) integer division simply truncates the results. The
    overall errors are smaller though if we use proper rounding. (Extend
    this to the purely cosmetic aspect of time.c's freq_string(), which
    before this change I've frequently observed to report e.g. NN.999MHz
    HPET clock speeds.)
    
    While adding the rounding logic, also switch to using an unsigned
    constant for the other, original half of bus_cycle's calculation.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 6b7860b5d04dfee4cbe0a64a4e9adc9832e2e73b
Author: Juergen Gross <jgross@xxxxxxxx>
Date:   Mon Mar 16 11:27:29 2020 +0100

    spinlocks: fix placement of preempt_[dis|en]able()
    
    In case Xen ever gains preemption support the spinlock coding's
    placement of preempt_disable() and preempt_enable() should be outside
    of the locked section.
    
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 12509bbeb9e386ca52ec46e23d1d540c6dc8d7d7
Author: Juergen Gross <jgross@xxxxxxxx>
Date:   Mon Mar 16 11:26:45 2020 +0100

    rwlocks: call preempt_disable() when taking a rwlock
    
    Similar to spinlocks preemption should be disabled while holding a
    rwlock.
    
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

commit 1946c33399ecc8dcad0938c4432b9e394eb78e17
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Mon Mar 16 11:26:10 2020 +0100

    x86/APIC: adjust types and comments in calibrate_APIC_clock()
    
    First and foremost the comment talking about potential underflow being
    taken care of by using signed long type variables was true only on
    32-bit, which we've not been supporting for quite some time. Drop the
    comment and change all involved types to unsigned. Take the opportunity
    and also replace bus_cycle's fixed width type.
    
    Additionally there's no point using an "arbitrary (but long enough)
    timeout" here. Just use the maximum possible value; Linux does so too,
    just as an additional data point.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit efd09c771ead61fbe34161ae2250d4c77a2dcd36
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Mon Mar 16 11:25:45 2020 +0100

    kconfig: expose all{yes,no}config targets
    
    Without having them at least at the xen/Makefile level they're (close
    to?) inaccessible. As I'm uncertain about their utility at the top
    level, I'm leaving it at that for now.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Wei Liu <wl@xxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit b75b3c62fe4afe381c6f74a07f614c0b39fe2f5d
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Mon Mar 16 11:24:29 2020 +0100

    AMD/IOMMU: fix off-by-one in amd_iommu_get_paging_mode() callers
    
    amd_iommu_get_paging_mode() expects a count, not a "maximum possible"
    value. Prior to b4f042236ae0 dropping the reference, the use of our mis-
    named "max_page" in amd_iommu_domain_init() may have lead to such a
    misunderstanding. In an attempt to avoid such confusion in the future,
    rename the function's parameter and - while at it - convert it to an
    inline function.
    
    Also replace a literal 4 by an expression tying it to a wider use
    constant, just like amd_iommu_quarantine_init() does.
    
    Fixes: ea38867831da ("x86 / iommu: set up a scratch page in the quarantine 
domain")
    Fixes: b4f042236ae0 ("AMD/IOMMU: Cease using a dynamic height for the IOMMU 
pagetables")
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
(qemu changes not included)

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