[Qemu-devel] [Bug 1042388] Re: qemu: Unsupported syscall: 257 (timer_create)

[Martin Pitt]

Unfortunately it is still not working with these two patches. The
"Unsupported syscall: 257" is gone, but now it fails on EINVAL. I attach
a little test C file which uses  a timer. It works fine on x86 and a
real arm machine, but under QEMU I get:

$ gcc -o timer_test -Wall  timer_test.c  -lrt
$ ./timer_test
Failed to create timer: Invalid argument
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted (core dumped)

So timer_create() does not actually seem to work? I tried some
variations like 50 ms, or using CLOCK_REALTIME instead of
CLOCK_MONOTONIC, all with the same result.

** Attachment added: "timer test script to test"
   
https://bugs.launchpad.net/qemu/+bug/1042388/+attachment/3948443/+files/timer_test.c

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https://bugs.launchpad.net/bugs/1042388

Title:
  qemu: Unsupported syscall: 257 (timer_create)

Status in QEMU:
  Fix Released
Status in “qemu” package in Ubuntu:
  Triaged

Bug description:
  Running qemu-arm-static for git HEAD. When I try to install ghc from
  debian into my arm chroot I get:

  Setting up ghc (7.4.1-4) ...
  qemu: Unsupported syscall: 257
  ghc: timer_create: Function not implemented
  qemu: Unsupported syscall: 257
  ghc-pkg: timer_create: Function not implemented
  dpkg: error processing ghc (--configure):
   subprocess installed post-installation script returned error exit status 1
  Errors were encountered while processing:
   ghc
  E: Sub-process /usr/bin/dpkg returned an error code (1)

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