[Bug 1563420] Comment bridged from LTC Bugzilla

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------- Comment From arnez at de.ibm.com 2016-04-08 07:26 EDT-------
OK, the updated valgrind package supports RISBGN now, but apparently not POPCNT:

==7145==
vex s390->IR: unimplemented insn: B9E1 0011
==7145== valgrind: Unrecognised instruction at address 0x108888.

For verification I used the test from the valgrind test suite:
none/tests/s390x/popcnt.c.

Maybe there is something wrong with the patch '16_s390x_popcnt-
insn.patch'?

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https://bugs.launchpad.net/bugs/1563420

Title:
  valgrind: Backport Valgrind patches for s390 to Ubuntu 16.04

Status in valgrind package in Ubuntu:
  Fix Released

Bug description:
  The following patches for s390 need to be picked for Valgrind:

  * r15702 -- s390x: Crash with certain glibc versions due to
    non-implemented TBEGIN (https://bugs.kde.org/show_bug.cgi?id=353680)
    Note that this is also needed when using a glibc with vector-accelerated
    string functions.

  * r15792/VEX r3210 -- s390x: popcnt (B9E1) not implemented
    (https://bugs.kde.org/show_bug.cgi?id=359289)

  * r15806 -- s390: wire up separate socketcalls system calls
    (https://bugs.kde.org/show_bug.cgi?id=359703)
    This is needed when using a kernel that has separate system calls for
    socket functions.

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