Re: [Qemu-devel] [PATCH 02/10] compiler.h: add QEMU_CACHELINE + QEMU_ALIGN() + QEMU_CACHELINE_ALIGNED

[Lluís Vilanova]

Peter Maydell writes:

> On 5 April 2016 at 17:31, Richard Henderson <address@hidden> wrote:
>> On 04/05/2016 09:23 AM, Lluís Vilanova wrote:
>>> 
>>> Got it!
>>> 
>>> gcc -march=native --help=params -v 2>&1 | grep "param
>>> l1-cache-line-size" | sed -e 's/.* --param l1-cache-line-size=\([0-9]\+\)
>>> .*/\1/'
>> 
>> 
>> That will only work on x86, where we can be pretty sure it's 64 anyway.

Oh, you mean l1-cache-line-size is an x86-only parameter in GCC?


> Doesn't work on OSX x86 either, since the gcc-to-clang wrapper
> doesn't support --help=params :-)

Well, my suggestion of adding a configure flag still applies :)


Cheers,
  Lluis