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Re: [Qemu-devel] [Bug 1344320] Re: qemu-aarch64 cannot execute glibc


From: Peter Maydell
Subject: Re: [Qemu-devel] [Bug 1344320] Re: qemu-aarch64 cannot execute glibc
Date: Tue, 22 Jul 2014 23:22:15 +0100

On 22 July 2014 20:46, Richard Henderson <address@hidden> wrote:
> On 07/21/2014 10:37 AM, Peter Maydell wrote:
>>> It's trying to measure clock cycles required to perform the startup
>>> relocations.
>>
>> That's a neat trick, given that the generic timers are not cycle
>> counters! They're a fixed frequency counter which is generally
>> unrelated and rather slower than the CPU frequency (and
>> which doesn't scale up and down with CPU frequency either).
>
> Even better.

In any case the kernel guys say you can't guarantee they
exist unless you get them to define an ELF hwcap for
"timers exist and have a sane value in the 'what frequency
are they' register". So this is a glibc bug and I'm
not fixing QEMU...

-- PMM



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