Re: [Xen-devel] [PATCH v2 2/4] xen/arm: Add macro ALIGN

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 26/09/13 15:38, Ian Campbell wrote:
> On Thu, 2013-09-26 at 15:34 +0100, Andrew Cooper wrote:
>> On 26/09/13 15:30, Ian Campbell wrote:
>>> On Thu, 2013-09-26 at 13:56 +0100, Julien Grall wrote:
>>>
>>>> diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h
>>>> index 2cea1ba..35f3b29 100644
>>>> --- a/xen/include/asm-arm/config.h
>>>> +++ b/xen/include/asm-arm/config.h
>>>> @@ -186,6 +186,10 @@
>>>>  #define STACK_SIZE  (PAGE_SIZE << STACK_ORDER)
>>>>  
>>>>  #ifndef __ASSEMBLY__
>>>> +#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
>>> Seems like there ought to be a place under include/xen where this would
>>> fit.
>>>
>>> xen/include/xen/lib.h I reckon.
>> Except x86 has #define ALIGN _ALIGN which will surely cause problems?
> ARM has this too (assuming you meant __ALIGN, can't find the other), but
> in both cases it is only the #ifdef __ASSEMBLY__, whereas this adds a
> non-asm version.
>
> Could avoid any confusion by naming this version ROUNDUP.
>
> xen/common/xmalloc_tlsf.c has ROUNDUP_PAGE already too BTW.
>
> Ian.
>

That seems like a sensible way forward.

~Andrew

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