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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: |
Mon, 21 Jul 2014 21:37:15 +0100 |
On 21 July 2014 20:00, Richard Henderson <address@hidden> wrote:
> On 07/21/2014 12:46 AM, Peter Maydell wrote:
>> Q: is this in a released glibc? The generic timers are strictly speaking
>> optional, so this seems kind of bogus. Also looking at the glibc sources
>> it never reads the counter frequency so what it is hoping to do with the
>> timer values I have no idea.
>>
>
> 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).
-- PMM
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