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Re: RFC: A new MIPS64 ABI


On 02/14/2011 06:14 PM, Joe Buck wrote:
On Mon, Feb 14, 2011 at 05:57:13PM -0800, Paul Koning wrote:
It seems that this proposal would benefit programs that need more than 2 GB but less than 4 GB, and for some reason really don't want 64 bit pointers.

This seems like a microscopically small market segment. I can't see any sense in such an effort.

I remember the RHEL hugemem patch being a big deal for lots of their customers, so a process could address the full 4GB instead of only 3GB on a 32-bit machine. If I recall correctly, upstream didn't want it (get a 64-bit machine!) but lots of paying customers clamored for it.

(I personally don't have an opinion on whether it's worth bothering with).


Also look at the new x86_64 ABI (See all those X32 psABI messages) that the Intel folks are actively working on. This proposal is very similar to what they are doing.


David Daney


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