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Re: [Minios-devel] [PATCH v3 09/43] arm64: add the __PAGE_SIZE macro in header file



On Wed, Apr 18, 2018 at 05:53:09PM +0100, Julien Grall wrote:
> Hi Shijie,
> 
> On 16/04/18 07:31, Huang Shijie wrote:
> >The __PAGE_SIZE is needed by the include/posix/limits.h.
> >
> >Signed-off-by: Huang Shijie <shijie.huang@xxxxxxx>
> >---
> >  include/arm/arch_limits.h | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> >diff --git a/include/arm/arch_limits.h b/include/arm/arch_limits.h
> >index 23a491f..de047b0 100644
> >--- a/include/arm/arch_limits.h
> >+++ b/include/arm/arch_limits.h
> >@@ -3,6 +3,8 @@
> >  #include <page_def.h>
> >+#define __PAGE_SIZE       (1UL << PAGE_SHIFT)
> 
> This looks a bit odd to me. __* is used to define the non-underscore
> version. Have a look at posix/limits.h.
> 
> This make me realize that page_def.h is introducing the non-underscore
> version. So I think page_def.h should be fixed. Most likely, you want to
> fold page_def.h in arch_limits.h because this is pointless to have a header
> just defining 3 macro and included only twice.
I created the page_def.h which makes the compiler very happy.
The page_def.h is also included in the assembly code, not only twice.

Thanks
Huang Shijie

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