Re: [PATCH] qemu/timer: Don't use RDTSC on i486

[Petr Cvek]

Dne 26. 11. 23 v 14:03 Samuel Tardieu napsal(a):
> 
> Petr Cvek <petrcvekcz@gmail.com> writes:
> 
>> Actually I was thinking about mentioning it in the commit message also, but 
>> I wasn't able
>> to find any specification for that (if all compilers use it).
> 
> Note that this change would be safe: at worst, some compilers don't use 
> __tune_i386__ and the situation would be the same as today without the patch.

Good remark. You're right.

> 
>> Other problem is the __tune_i386__ is also set when -mtune=i386 (but with 
>> -march=i686).
> 
> Indeed, this is the case for GCC (not clang).
> 
>  Sam