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Re: Patch für MAP_HUGETLB for mmap() shared memory

Andres Freund <andres@2ndquadrant.com>

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From: Andres Freund <andres@2ndquadrant.com>
To: cjk@wwwtech.de
Cc: pgsql-hackers@postgresql.org
Date: 2012-11-13T09:03:10Z
Lists: pgsql-hackers 
Oh, one more thing...

On 2012-10-30 21:16:07 +0100, Christian Kruse wrote:
> ok, I think I implemented all of the changes you requested. All but
> the ia64 dependent, I have to do more research for this one.

I vote for simply not caring about ia64.

This is:

> +#ifdef MAP_HUGETLB
> +#  ifdef __ia64__
> +#    define PG_HUGETLB_BASE_ADDR (void *)(0x8000000000000000UL)
> +#    define PG_MAP_HUGETLB (MAP_HUGETLB|MAP_FIXED)
> +#  else
> +#    define PG_HUGETLB_BASE_ADDR (void *)(0x0UL)
> +#    define PG_MAP_HUGETLB MAP_HUGETLB
> +#  endif
> +#else
> +#  define PG_MAP_HUGETLB 0
> +#endif

too much underdocumented crazyness for a very minor platform. Should
somebody with the approprate harware want to submit an additional patch,
fine....


Greetings,

Andres Freund

-- 
 Andres Freund	                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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