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Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X |
Date: |
Tue, 27 Jan 2009 00:34:03 +0000 |
User-agent: |
KMail/1.9.9 |
> Out of curiousity, what are the benefits of using 64-bit apps in OS X?
My guess is that same as most other x86 targets: The i386 legacy mode is
crippled by lack of registers, modern x86 hardware has a big fat wide memory
bus, and noone's bothered implementing an ILP32 64-bit API[1], so 64-bit apps
give measurably better overall performance.
Paul
[1] ILP32 APIs for 64-bit x86 do exist, but the architecture is missing a
couple of features so they're a bit hairy, and AFAIK not supported by any
mainstream operating systems.
- [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Alexander Graf, 2009/01/24
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Anthony Liguori, 2009/01/26
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X,
Paul Brook <=
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Jamie Lokier, 2009/01/26
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Paul Brook, 2009/01/26
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Anthony Liguori, 2009/01/26
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Alexander Graf, 2009/01/27
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Jamie Lokier, 2009/01/27
- Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, Laurent Desnogues, 2009/01/27
Re: [Qemu-devel] [PATCH] Enabled building of x86_64 code on Mac OS X, C . W . Betts, 2009/01/26