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Andi Kleen
5524ea320d x86: don't set up early exception handlers for external interrupts 
All of early setup runs with interrupts disabled, so there is no
need to set up early exception handlers for vectors >= 32

This saves some minor text size.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
366932deb3 x86: relocate_kernel - use predefined macroses for page attributes 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
fd3af53122 x86: relocate_kernel - use predefined macroses for processor state 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
a7bba17bf0 x86: relocate_kernel - use PAGE_SIZE instead of numeric constant 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
4039ae5380 x86: relocate_kernel_32.S - clear register in more elegant way 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Mathieu Desnoyers
15a601eb9c x86: fix test_poke for vmalloced pages 
* Ingo Molnar (mingo@elte.hu) wrote:
>
> * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
>
> > The shadow vmap for DEBUG_RODATA kernel text modification uses
> > virt_to_page to get the pages from the pointer address.
> >
> > However, I think vmalloc_to_page would be required in case the page is
> > used for modules.
> >
> > Since only the core kernel text is marked read-only, use
> > kernel_text_address() to make sure we only shadow map the core kernel
> > text, not modules.
>
> actually, i think we should mark module text readonly too.
>

Yes, but in the meantime, the x86 tree would need this patch to make
kprobes work correctly on modules.

I suspect that without this fix, with the enhanced hotplug and kprobes
patch, kprobes will use text_poke to insert breakpoints in modules
(vmalloced pages used), which will map the wrong pages and corrupt
random kernel locations instead of updating the correct page.

Work that would write protect the module pages should clearly be done,
but it can come in a later time. We have to make sure we interact
correctly with the page allocation debugging, as an example.

Here is the patch against x86.git 2.6.25-rc5 :

The shadow vmap for DEBUG_RODATA kernel text modification uses virt_to_page to
get the pages from the pointer address.

However, I think vmalloc_to_page would be required in case the page is used for
modules.

Since only the core kernel text is marked read-only, use kernel_text_address()
to make sure we only shadow map the core kernel text, not modules.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: akpm@linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Ravikiran G Thirumalai
e5699a8231 x86: clean up vSMP detection 
vSMP detection: access pci config space early in boot to detect if the
system is a vSMPowered box, and cache the result in a flag, so that
is_vsmp_box() retrieves the value of the flag always.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Jiri Slaby
43cdf5d6e0 x86: pgtable, document pde bits 
Some of pde bits weren't documented, add the short description to them.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Ingo Molnar
7fda20f146 x86: spinlock ops are always-inlined 
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Jeremy Fitzhardinge
d93c870bad x86: only enable interrupts when kernel state has been set up 
The sysenter path tries to enable interrupts immediately.  Unfortunately
this doesn't work in a paravirt environment, because not enough kernel
state has been set up at that point (namely, pointing %fs to the kernel
percpu data segment).  To fix this, defer ENABLE_INTERRUPTS until after
the kernel state has been set up.

Unfortunately this means that we're running with interrupts disabled
for a while without calling the IRQ tracing code, but that can't be
called without setting up %fs either.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Joe Perches
687c805409 include/asm-x86/xor_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Joe Perches
8fdf765527 include/asm-x86/xor_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Joe Perches
d6ae390a0b include/asm-x86/voyager.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:29 +02:00
Joe Perches
8948584eb2 include/asm-x86/vmi.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
9e8a935bcf include/asm-x86/vm86.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
364fe5ef47 include/asm-x86/vga.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
ac1a7b0eaa include/asm-x86/vdso.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
a206ea11b6 include/asm-x86/user_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
a31216194c include/asm-x86/user32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
826700dc9b include/asm-x86/user_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
c489f44519 include/asm-x86/unistd_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
687fc16b65 include/asm-x86/unistd_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
6e714b3797 include/asm-x86/unaligned.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
b896313e53 include/asm-x86/uaccess_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
b1fcec7f22 include/asm-x86/uaccess_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
2d86e637d1 include/asm-x86/tsc.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
5d7d03b81a include/asm-x86/topology.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
94cf8de0a0 include/asm-x86/tlbflush.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
b98fff3022 include/asm-x86/thread_info_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
89917f28f3 include/asm-x86/thread_info_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
7c4d4784db include/asm-x86/tce.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
c5386c200f include/asm-x86/system.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:28 +02:00
Joe Perches
26b7fcc4bd include/asm-x86/sync_bitops.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
a4c2d7d928 include/asm-x86/swiotlb.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
1b17fce607 include/asm-x86/suspend_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
cf030ebd40 include/asm-x86/suspend_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
953b2f1ed6 include/asm-x86/string_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
06b0f574ea include/asm-x86/string_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
7f3a9508b5 include/asm-x86/srat.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
d3bf60a6e4 include/asm-x86/spinlock.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
ceb7ce1052 include/asm-x86/smp_64.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
2fec394adf include/asm-x86/smp_32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
9551b12a51 include/asm-x86/signal.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
af1fec15de include/asm-x86/sigcontext.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
895b7643d6 include/asm-x86/sigcontext32.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
915cd5aa0a include/asm-x86/setup.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
6e5609a97a include/asm-x86/rwsem.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
0f4fc8c1dc include/asm-x86/rio.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
c6fd5d49ec include/asm-x86/resume-trace.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00
Joe Perches
78db4c6be4 include/asm-x86/reboot.h: checkpatch cleanups - formatting only 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2008-04-17 17:41:27 +02:00