Subject: Re: Add a MAP_ALIGNED flag for mmap(2).
To: Matt Thomas <matt@3am-software.com>
From: Andrew Brown <atatat@atatdot.net>
List: tech-kern
Date: 03/02/2003 23:22:47
>+ if (flags & MAP_FIXED) {
>+ if ((*addr & (align-1)) != 0)
>+ return(EINVAL);
>+ align = 0;
at some point today, something clicked in my head that said "this
should not be arbitrarily disallowed.
right now, if you specify MAP_FIXED, all you have to do is make sure
that specify a hint that's page aligned. in the case of MAP_ALIGN,
all you should have to do it make sure specify a hint that's aligned
to the alignment you want.
0x60010000 should be fine as an aligned, fixed address, as long as
don't specify an alignment that's greater than 64k.
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