[Bug 1432786] Re: upgrade of ceph in vivid breaks qemu-system-arm

[James Page]

Due to:

#elif defined(__powerpc__) || defined (__powerpc64__)
    // Based on:
    // https://github.com/randombit/botan/blob/net.randombit.botan/src/lib/entropy/hres_timer/hres_timer.cpp
    uint32_t lo = 0, hi = 0;
    asm volatile("mftbu %0; mftb %1" : "=r" (hi), "=r" (lo));
    return (((uint64_t)hi << 32) | lo);
#else
#warning No high-precision counter available for your OS/arch
    return 0;
#endif
  }

arm does not have a reliable high precision cpu cycles counter - return
0 was suggested from upstream - but looks like we need a better
fallback.

** Changed in: ceph (Ubuntu Vivid)
       Status: Confirmed => Triaged

** Changed in: ceph (Ubuntu Vivid)
     Assignee: Canonical Server Team (canonical-server) => James Page (james-page)

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https://bugs.launchpad.net/bugs/1432786

Title:
  upgrade of ceph in vivid breaks qemu-system-arm

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