Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[H. Peter Anvin]

Arnd Bergmann wrote:
> Unfortunately, there is no generic way to detect the word size yet,
> but every architecture uses its own preprocessor macro (__x86_64__,
> __s390x__, __ppc64__). We also can't use CONFIG_64BIT in an user-exported
> interface header file, because the use space can also be compiled for
> 32 bits when the kernel uses 64 bits.

Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well 
as __CHAR_BIT__), although I don't know how far back it does have that. 
    If it has been with us for long enough it might be possible to 
switch over to using panarch macros.

	-hpa

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/