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

[Richard Henderson]

On 04/05/2016 12:02 PM, Lluís Vilanova wrote:
> 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?

No, using -march=native to detect the host line size.


r~