linux-toradex.git/arch/x86_64/kernel/setup64.c, branch v2.6.19.3

[PATCH] Don't leak NT bit into next task

2006-09-26T08:52:41+00:00

SYSENTER can cause a NT to be set which might cause crashes on the IRET
in the next task.

Following similar i386 patch from Linus.

Signed-off-by: Andi Kleen

[PATCH] Remove most of the special cases for the debug IST stack

2006-09-26T08:52:38+00:00

Remove most of the special cases for the debug IST stack.  This is a
follow on clean up patch, it requires the bug fix patch that adds
orig_ist.

Signed-off-by: Keith Owens 
Signed-off-by: Andi Kleen

[PATCH] Optimize PDA accesses slightly

2006-09-26T08:52:38+00:00

Based on a idea by Jeremy Fitzhardinge:

Replace the volatiles and memory clobbers in the PDA access with
telling gcc about access to a proxy PDA structure that doesn't
actually exist. But the dummy accesses give a defined ordering for
read/write accesses.

Also add some memory barriers to the early GS initialization to
make sure no PDA access is moved before it.

Advantage is some .text savings (probably most from better
code for accessing "current"):

   text    data     bss     dec     hex filename
4845647 1223688  615864 6685199  66020f vmlinux
4837780 1223688  615864 6677332  65e354 vmlinux-pda

1.2% smaller code

Cc:  Jeremy Fitzhardinge 
Signed-off-by: Andi Kleen

[PATCH] Auto size the per cpu area.

2006-09-26T08:52:35+00:00

Now for a completely different but trivial approach.
I just boot tested it with 255 CPUS and everything worked.

Currently everything (except module data) we place in
the per cpu area we know about at compile time.  So
instead of allocating a fixed size for the per_cpu area
allocate the number of bytes we need plus a fixed constant
for to be used for modules.

It isn't perfect but it is much less of a pain to
work with than what we are doing now.

AK: fixed warning

Signed-off-by: Eric W. Biederman 
Signed-off-by: Andi Kleen

[PATCH] Make boot_param_data pure BSS

2006-09-26T08:52:35+00:00

Since it's all zero.

Actually I think gcc 4+ will do that automatically, but earlier compilers won't
Signed-off-by: Andi Kleen

[PATCH] Convert x86-64 to early param

2006-09-26T08:52:32+00:00

Instead of hackish manual parsing

Requires earlier i386 patchkit, but also fixes i386 early_printk again.

I removed some obsolete really early parameters which didn't do anything useful.
Also made a few parameters that needed it early (mostly oops printing setup)

Also removed one panic check that wasn't visible without
early console anyways (the early console is now initialized after that
panic)

This cleans up a lot of code.

Signed-off-by: Andi Kleen

[PATCH] x86_64: Save original IST values for checking stack addresses

2006-08-30T23:05:16+00:00

The values in init_tss.ist[] can change when an IST event occurs.  Save
the original IST values for checking stack addresses when debugging or
doing stack traces.

Signed-off-by: Keith Owens 
Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk

[PATCH] x86_64: Move export symbols to their C functions

2006-06-26T17:48:22+00:00

Only exports for assembler files are left in x8664_ksyms.c

Originally inspired by a patch from Al Viro
Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds

[PATCH] x86_64: Remove long obsolete CVS

2006-06-26T17:48:16+00:00

Early development of x86-64 Linux was in CVS, but that hasn't been
the case for a long time now. Remove the obsolete $Id$s.

Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds