x86/asm/entry: Unify and fix initial thread_struct::sp0 values

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x86_32 and x86_64 need slightly different thread_struct::sp0 values, and
x86_32's was incorrect for init.

This never mattered -- the init thread never runs user code, so we never
used thread_struct::sp0 for anything.

Fix it and mostly unify them.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1b810c1d2e797e27bb4a7708c426101161edd1f6.1426009661.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

This commit is contained in:

Andy Lutomirski 2015-03-10 11:05:59 -07:00 • committed by Ingo Molnar

parent 3ee4298f44

commit d9e05cc5a5

2 changed files with 6 additions and 3 deletions

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7

arch/x86/include/asm/processor.h

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2

arch/x86/kernel/process.c

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