Subject: Re: linux-next: sparc tree build failure

From: David Miller <[email-masked]>
Date: Wed, 08 Apr 2009 22:28:10 -0700 (PDT)

From: Stephen Rothwell <[email-masked]>
Date: Thu, 9 Apr 2009 15:17:22 +1000

> Dave, this might be a good time to suggest that sparc64 create its TI_
> offsets automatically via asm-offsets ...

I want to know the exact offsets for cache layout reasons,
at the very least.  And there are other more important reasons
to check this stuff out by hand and don't let it compile
automatically.

Anything that changes the layout and size of members in struct
thread_info should be scrutinized carefully by every arch maintainer.

There are other implications for these kinds of changes, for example
this decreases the amount of space we have to save our recursive
kernel/user FPU state on sparc64.

I don't want any of this to be automated at all.