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mmap alignment.

Subject: mmap alignment.
From: Theo Schlossnagle <email@hidden>
Date: Sun, 12 Feb 2006 15:59:50 -0500
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Hello all,

I'm porting an app that uses mmap() and banks on its alignment behaviour on Solaris and Linux.

I'd like to mmap a 64k and have the resulting address be aligned on a 64k boundary. I'm trying with: mmap((void *)65536, 65536, PROT_NONE, MAP_PRIVATE | MAP_ANON | MAP_NORESERVE | MAP_ALIGN, -1, 0);

However, the return address is not modulo 64k. How do I accomplish what I want?

Thanks!

// Theo Schlossnagle
// Principal Engineer -- http://www.omniti.com/~jesus/
// OmniTI Computer Consulting, Inc. -- http://www.omniti.com/
// Ecelerity: Run with it.


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