[OpenAFS-devel] Running AFS 1.3.81 on x86_64

Velu Erwan erwan@seanodes.com
Mon, 11 Apr 2005 15:29:35 +0200


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Hi folks, I've been discovering openafs and I'm trying to setting it up
on my linux system.

I've been compiling using amd64_linux24 as I'm using a 2.4.28 kernel &
gcc 3.3.2. Compilation is fine.

I was just wondering why you don't use the -mno-red-zone gcc option as
you create a kernel module for x86_64.

-mno-red-zone
Do not use a so called red zone for x86-64 code.  The red zone is
mandated by the x86-64 ABI, it is a 128-byte area beyond the location of
the stack pointer that will not be modified by signal or
interrupt handlers and therefore can be used for temporary data
without adjusting the stack pointer.
The flag -mno-red-zone disables this red zone

This flag is know to help the kernel drivers written for x86_64 being
more stable using some gcc >=3D 3.3.
--=20
Erwan Velu
Consultant - Seanodes SA
http://www.seanodes.com

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