linux-stable.git/include/asm-x86, branch linux-2.6.24.y

x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERIC

2008-03-24T18:47:39+00:00

Commit: 959b3be64cab9160cd74532a49b89cdd918d38e9

x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERIC

P6_NOPs are definitely not supported on some VIA CPUs, and possibly
(unverified) on AMD K7s.  It is also the only thing that prevents a
686 kernel from running on Transmeta TM3x00/5x00 (Crusoe) series.

The performance benefit over generic NOPs is very small, so when
building for generic consumption, avoid using them.

Signed-off-by: H. Peter Anvin 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner 
[cebbert@redhat.com: backport take 2, with parens this time]
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

x86: replace LOCK_PREFIX in futex.h

2008-03-24T18:47:16+00:00

Commit: 9d55b9923a1b7ea8193b8875c57ec940dc2ff027

The exception fixup for the futex macros __futex_atomic_op1/2 and
futex_atomic_cmpxchg_inatomic() is missing an entry when the lock
prefix is replaced by a NOP via SMP alternatives.

Chuck Ebert tracked this down from the information provided in:
https://bugzilla.redhat.com/show_bug.cgi?id=429412

A possible solution would be to add another fixup after the
LOCK_PREFIX, so both the LOCK and NOP case have their own entry in the
exception table, but it's not really worth the trouble.

Simply replace LOCK_PREFIX with lock and keep those untouched by SMP
alternatives.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
[cebbert@redhat.com: backport to 2.6.24]
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

x86: adjust enable_NMI_through_LVT0()

2008-03-24T18:47:11+00:00

commit e94271017f0933b29362a3c9dea5a6b9d04d98e1

Its previous use in a call to on_each_cpu() was pointless, as at the
time that code gets executed only one CPU is online. Further, the
function can be __cpuinit, and for this to work without
CONFIG_HOTPLUG_CPU setup_nmi() must also get an attribute (this one
can even be __init; on 64-bits check_timer() also was lacking that
attribute).

Signed-off-by: Jan Beulich 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner 
[ tglx@linutronix.de: backport to 2.6.24.3]
Cc: Justin Piszcz 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

x86: asm-x86/msr.h: pull in linux/types.h

2008-01-15T15:44:38+00:00

Since the msr.h header uses types like __u32, it should pull in linux/types.h.

[ mingo@elte.hu: affects user-space that includes this header. We dont
  actually like user-space including raw kernel headers but it's a
  longstanding practice and it's easy for the kernel to be nice about
  this. ]

Signed-off-by: Mike Frysinger 
Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar

x86: fix asm-x86/msr.h for user-space export

2008-01-01T18:12:15+00:00

Use __asm__ and __volatile__ in code that is exported to userspace.  Wrap
kernel functions with __KERNEL__ so they get scrubbed.

No code changed:

   text    data     bss     dec     hex    filename
   9681036 1698924 3407872 14787832 e1a4f8 vmlinux.before
   9681036 1698924 3407872 14787832 e1a4f8 vmlinux.after

Signed-off-by: Mike Frysinger 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: fix asm-x86/byteorder.h for userspace export

2008-01-01T18:12:15+00:00

Since asm-x86/byteorder.h is exported to userspace, use __asm__ rather than
asm in its code.

Signed-Off-By: Mike Frysinger 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: also define AT_VECTOR_SIZE_ARCH

2007-12-18T17:05:58+00:00

The patch introducing this left out 64-bit x86 despite it also having
extra entries.

this solves Xen guest troubles.

Signed-off-by: Jan Beulich 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: jprobe bugfix

2007-12-18T17:05:58+00:00

jprobe for x86-64 may cause kernel page fault when the jprobe_return()
is called from incorrect function.

- Use jprobe_saved_regs instead getting it from stack.
  (Especially on x86-64, it may get incorrect data, because
   pt_regs can not be get by using container_of(rsp))
- Change the type of stack pointer to unsigned long *.

Signed-off-by: Masami Hiramatsu 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: disable hpet on shutdown

2007-12-03T16:17:10+00:00

If HPET was enabled by pci quirks, we use i8253 as initial clockevent
because pci quirks doesn't run until pci is initialized.

The above means the kernel (or something) is assuming HPET legacy
replacement is disabled and can use i8253 at boot.

If we used kexec, it isn't true. So, this patch disables HPET legacy
replacement for kexec in machine_shutdown().

Signed-off-by: OGAWA Hirofumi 
Acked-by: Venkatesh Pallipadi 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: fix ACPI compile for LOCAL_APIC=n

2007-11-26T19:42:19+00:00

ACPI processor idle code references local_apic_timer_c2_ok, which
is not available when LOCAL_APIC is disabled.

Define local_apic_timer_c2_ok as a constant, when LOCAL_APIC=n

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar