Re: x86-64 on i386 (was Re: Promoting i386 version over x86_64?)

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On Wed, 18 Nov 2009, Jeff Garzik wrote:

Running a 64-bit kernel with a 32-bit userland is a common practice on non-x86 platforms, and non-Linux OS's.

FWIW, it works on Linux too. I ran F10 i386 on a x86_64 kernel for a while. About the only thing that doesn't work right is yum wrt kernel updates.

For a lot of tasks, you simply do not need 64-bit pointers and a 64-bit process address space. Both executable code and in-memory data structures tend to be smaller on 32-bit.

Indeed.

It would be nice if i386-userspace/x64-kernel were officially support..

regards,
--
Paul Jakma	paul@xxxxxxxxx	Key ID: 64A2FF6A
Fortune:
Blore's Razor:
	Given a choice between two theories, take the one which is funnier.

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