openwrt/staging/blogic.git
18 years ago[PATCH] Detect clock skew during suspend
Rafael J. Wysocki [Tue, 26 Sep 2006 08:52:37 +0000 (10:52 +0200)]
[PATCH] Detect clock skew during suspend

Detect the situations in which the time after a resume from disk would
be earlier than the time before the suspend and prevent them from
happening on x86_64.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: annotate FIX_STACK() and the rest of nmi()
Chuck Ebbert [Tue, 26 Sep 2006 08:52:37 +0000 (10:52 +0200)]
[PATCH] i386: annotate FIX_STACK() and the rest of nmi()

In i386's entry.S, FIX_STACK() needs annotation because it
replaces the stack pointer.  And the rest of nmi() needs
annotation in order to compile with these new annotations.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] make numa_emulation() __init
Andrew Morton [Tue, 26 Sep 2006 08:52:37 +0000 (10:52 +0200)]
[PATCH] make numa_emulation() __init

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Move compiler check for modules to ia64 only
Andi Kleen [Tue, 26 Sep 2006 08:52:37 +0000 (10:52 +0200)]
[PATCH] Move compiler check for modules to ia64 only

Apparently IA64 needs it, but i386/x86-64 don't anymore
since gcc 2.95 support was dropped.  Nobody else on linux-arch
requested keeping it generically

Cc: tony.luck@intel.com
Cc: kaos@sgi.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Don't force reserve the 640k-1MB range
Andi Kleen [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] Don't force reserve the 640k-1MB range

From i386 x86-64 inherited code to force reserve the 640k-1MB area.
That was needed on some old systems.

But we generally trust the e820 map to be correct on 64bit systems
and mark all areas that are not memory correctly.

This patch will allow to use the real memory in there.

Or rather the only way to find out if it's still needed is to
try. So far I'm optimistic.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: remove config.h includes from asm-i386 & asm-x86_64
Dave Jones [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] x86: remove config.h includes from asm-i386 & asm-x86_64

This is now automatically included by kbuild.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Disallow kprobes on NMI handlers
Fernando Luis Vázquez Cao [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: Disallow kprobes on NMI handlers

A kprobe executes IRET early and that could cause NMI recursion and stack
corruption.

Note: This problem was originally spotted and solved by Andi Kleen in the
x86_64 architecture. This patch is an adaption of his patch for i386.

AK: Merged with current code which was a bit different.
AK: Removed printk in nmi handler that shouldn't be there in the first time
AK: Added missing include.
AK: added KPROBES_END

Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Disallow kprobes on NMI handlers
Fernando Luis Vázquez Cao [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: Disallow kprobes on NMI handlers

A kprobe executes IRET early and that could cause NMI recursion and stack
corruption.

Note: This problem was originally spotted by Andi Kleen. This patch
      adds fixes not included in his original patch.
[AK: Jan Beulich originally discovered these classes of bugs]

Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: mark cpu cache functions as __cpuinit
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: mark cpu cache functions as __cpuinit

Mark i386-specific cpu cache functions as __cpuinit. They are all
only called from arch/i386/common.c:display_cache_info() that already is
marked as __cpuinit.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: mark cpu identify functions as __cpuinit
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: mark cpu identify functions as __cpuinit

Mark i386-specific cpu identification functions as __cpuinit. They are all
only called from arch/i386/common.c:identify_cpu() that already is marked as
__cpuinit.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: mark cpu init functions as __cpuinit, data as __cpuinitdata
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: mark cpu init functions as __cpuinit, data as __cpuinitdata

Mark i386-specific cpu init functions as __cpuinit. They are all
only called from arch/i386/common.c:identify_cpu() that already is marked as
__cpuinit. This patch also removes the empty function init_umc().

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: mark cpu_dev structures as __cpuinitdata
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: mark cpu_dev structures as __cpuinitdata

The different cpu_dev structures are all used from __cpuinit callers what
I can tell. So mark them as __cpuinitdata instead of __initdata. I am a
little bit unsure about arch/i386/common.c:default_cpu, especially when it
comes to the purpose of this_cpu.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] mark init_amd() as __cpuinit
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] mark init_amd() as __cpuinit

The init_amd() function is only called from identify_cpu() which is already
marked as __cpuinit. So let's mark it as __cpuinit.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: remove redundant generic_identify() calls when identifying cpus
Magnus Damm [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] i386: remove redundant generic_identify() calls when identifying cpus

cpu_dev->c_identify is only called from arch/i386/common.c:identify_cpu(), and
this after generic_identify() already has been called. There is no need to call
this function twice and hook it in c_identify - but I may be wrong, please
double check before applying.

This patch also removes generic_identify() from cpu.h to avoid unnecessary
future nesting.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86_64 kernel mapping fix
Keith Mannthey [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] x86_64 kernel mapping fix

Fix for the x86_64 kernel mapping code.  Without this patch the update path
only inits one pmd_page worth of memory and tramples any entries on it.  now
the calling convention to phys_pmd_init and phys_init is to always pass a
[pmd/pud] page not an offset within a page.

Signed-off-by: Keith Mannthey<kmannth@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
18 years ago[PATCH] wire up oops_enter()/oops_exit()
Andrew Morton [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] wire up oops_enter()/oops_exit()

Implement pause_on_oops() on x86_64.

AK: I redid the patch to do the oops_enter/exit in the existing
oops_begin()/end(). This makes it much shorter.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] non lazy "sleazy" fpu implementation
Arjan van de Ven [Tue, 26 Sep 2006 08:52:36 +0000 (10:52 +0200)]
[PATCH] non lazy "sleazy" fpu implementation

Right now the kernel on x86-64 has a 100% lazy fpu behavior: after *every*
context switch a trap is taken for the first FPU use to restore the FPU
context lazily.  This is of course great for applications that have very
sporadic or no FPU use (since then you avoid doing the expensive
save/restore all the time).  However for very frequent FPU users...  you
take an extra trap every context switch.

The patch below adds a simple heuristic to this code: After 5 consecutive
context switches of FPU use, the lazy behavior is disabled and the context
gets restored every context switch.  If the app indeed uses the FPU, the
trap is avoided.  (the chance of the 6th time slice using FPU after the
previous 5 having done so are quite high obviously).

After 256 switches, this is reset and lazy behavior is returned (until
there are 5 consecutive ones again).  The reason for this is to give apps
that do longer bursts of FPU use still the lazy behavior back after some
time.

[akpm@osdl.org: place new task_struct field next to jit_keyring to save space]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
18 years ago[PATCH] i386: Support physical cpu hotplug for x86_64
Ashok Raj [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: Support physical cpu hotplug for x86_64

This patch enables ACPI based physical CPU hotplug support for x86_64.
Implements acpi_map_lsapic() and acpi_unmap_lsapic() to support physical cpu
hotplug.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@muc.de>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
18 years ago[PATCH] fix bus numbering format in mmconfig warning
Brice Goglin [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] fix bus numbering format in mmconfig warning

Make an mmconfig warning print the bus id with a regular format.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
18 years ago[PATCH] i386: mark two more functions as __init
Magnus Damm [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: mark two more functions as __init

cyrix_identify() should be __init because transmeta_identify() is.
tsc_init() is only called from setup_arch() which is marked as __init.

These two section mismatches have been detected using running modpost on
a vmlinux image compiled with CONFIG_RELOCATABLE=y.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: clean up topology.c
Magnus Damm [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: clean up topology.c

There is no need to duplicate the topology_init() function.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Auto size the per cpu area.
Eric W. Biederman [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] Auto size the per cpu area.

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 <ebiederm@xmission.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Descriptor and trap table cleanups.
Rusty Russell [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: Descriptor and trap table cleanups.

The implementation comes from Zach's [RFC, PATCH 10/24] i386 Vmi
descriptor changes:

Descriptor and trap table cleanups.  Add cleanly written accessors for
IDT and GDT gates so the subarch may override them.  Note that this
allows the hypervisor to transparently tweak the DPL of the descriptors
as well as the RPL of segments in those descriptors, with no unnecessary
kernel code modification.  It also allows the hypervisor implementation
of the VMI to tweak the gates, allowing for custom exception frames or
extra layers of indirection above the guest fault / IRQ handlers.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: move kernel_thread_helper into entry.S
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: move kernel_thread_helper into entry.S

And add proper CFI annotation to it which was previously
impossible. This prevents "stuck" messages by the dwarf2 unwinder
when reaching the top of a kernel stack.

Includes feedback from Jan Beulich

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Make enable_local_apic static
Adrian Bunk [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: Make enable_local_apic static

enable_local_apic can now become static.

Cc: len.brown@intel.com
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Make acpi_force static
Adrian Bunk [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: Make acpi_force static

acpi_force can become static.

Cc: len.brown@intel.com
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: make fault notifier unconditional and export it
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: make fault notifier unconditional and export it

It's needed for external debuggers and overhead is very small.

Also make the actual notifier chain they use static

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] make fault notifier unconditional and export it
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] make fault notifier unconditional and export it

It's needed for external debuggers and overhead is very small.

Also make the actual notifier chain they use static

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Fix warning in mpparse.c
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386: Fix warning in mpparse.c

Fix

linux/arch/i386/kernel/mpparse.c: In function #MP_bus_info#:
linux/arch/i386/kernel/mpparse.c:232: warning: comparison is always false due to limited range of data type

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Make boot_param_data pure BSS
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] Make boot_param_data pure BSS

Since it's all zero.

Actually I think gcc 4+ will do that automatically, but earlier compilers won't
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386/x86-64: Improve Kconfig description of CRASH_DUMP
Andi Kleen [Tue, 26 Sep 2006 08:52:35 +0000 (10:52 +0200)]
[PATCH] i386/x86-64: Improve Kconfig description of CRASH_DUMP

Improve Kconfig description of CONFIG_CRASH_DUMP. Previously
it was too brief to be useful.

Cc: vgoyal@in.ibm.com
Cc: ebiederm@xmission.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] X86_64 monotonic_clock goes backwards
Dimitri Sivanich [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] X86_64 monotonic_clock goes backwards

I've noticed some erratic behavior while testing the X86_64 version
of monotonic_clock().

While spinning in a loop reading monotonic clock values (pinned to a
single cpu) I noticed that the difference between subsequent values
occasionally went negative (time going backwards).

I found that in the following code:
                this_offset = get_cycles_sync();
                /* FIXME: 1000 or 1000000? */
-->             offset = (this_offset - last_offset)*1000 / cpu_khz;
        }
        return base + offset;

the offset sometimes turns out to be 0, even though
this_offset > last_offset.

+Added fix From: Toyo Abe <toyoa@mvista.com>

The x86_64-mm-monotonic-clock.patch in 2.6.18-rc4-mm2 made a change to
the updating of monotonic_base. It now uses cycles_2_ns().

I suggest that a set_cyc2ns_scale() should be done prior to the setup_irq().
Because cycles_2_ns() can be called from the timer ISR right after the irq0
is enabled.

Signed-off-by: Toyo Abe <toyoa@mvista.com>
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: error_code is not safe for kprobes
Prasanna S.P [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] x86: error_code is not safe for kprobes

This patch moves the entry.S:error_entry to .kprobes.text section,
since code marked unsafe for kprobes jumps directly to entry.S::error_entry,
that must be marked unsafe as well.
This patch also moves all the ".previous.text" asm directives to ".previous"
for kprobes section.

AK: Following a similar i386 patch from Chuck Ebbert
AK: Also merged Jeremy's fix in.

+From: Jeremy Fitzhardinge <jeremy@goop.org>

KPROBE_ENTRY does a .section .kprobes.text, and expects its users to
do a .previous at the end of the function.

Unfortunately, if any code within the function switches sections, for
example .fixup, then the .previous ends up putting all subsequent code
into .fixup.  Worse, any subsequent .fixup code gets intermingled with
the code its supposed to be fixing (which is also in .fixup).  It's
surprising this didn't cause more havok.

The fix is to use .pushsection/.popsection, so this stuff nests
properly.  A further cleanup would be to get rid of all
.section/.previous pairs, since they're inherently fragile.

+From: Chuck Ebbert <76306.1226@compuserve.com>

Because code marked unsafe for kprobes jumps directly to
entry.S::error_code, that must be marked unsafe as well.
The easiest way to do that is to move the page fault entry
point to just before error_code and let it inherit the same
section.

Also moved all the ".previous" asm directives for kprobes
sections to column 1 and removed ".text" from them.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: don't taint UP K7's running SMP kernels.
Dave Jones [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] i386: don't taint UP K7's running SMP kernels.

We have a test that looks for invalid pairings of certain athlon/durons
that weren't designed for SMP, and taint accordingly (with 'S') if we find
such a configuration.  However, this test shouldn't fire if there's only
a single CPU present. It's perfectly valid for an SMP kernel to boot on UP
hardware for example.

AK: changed to num_possible_cpus()

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: fix dubious segment register clear in cpu_init()
Jeremy Fitzhardinge [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] i386: fix dubious segment register clear in cpu_init()

Fix a very dubious piece of code in
arch/i386/kernel/cpu/common.c:cpu_init().  This clears out %fs and
%gs, but clobbers %eax in the process without telling gcc.  It turns
out that gcc happens to be not using %eax at that point anyway so it
doesn't matter much, but it looks like a bomb waiting to go off.

This does end up saving an instruction, because gcc wants %eax==0 for
the set_debugreg()s below.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Don't force frame pointers for lockdep
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Don't force frame pointers for lockdep

Now that stacktrace supports dwarf2 don't force frame pointers for lockdep anymore

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Get ebp from unwinder state when continuing fallback backtrace
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] i386: Get ebp from unwinder state when continuing fallback backtrace

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Terminate backtrace fallback early if unwinder stack pointer is zero
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] i386: Terminate backtrace fallback early if unwinder stack pointer is zero

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Do stacktracer conversion too
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] i386: Do stacktracer conversion too

Following x86-64 patches. Reuses code from them in fact.

Convert the standard backtracer to do all output using
callbacks.   Use the x86-64 stack tracer implementation
that uses these callbacks to implement the stacktrace interface.

This allows to use the new dwarf2 unwinder for stacktrace
and get better backtraces.

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Check for end of stack trace before falling back
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Check for end of stack trace before falling back

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Merge stacktrace and show_trace
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Merge stacktrace and show_trace

This unifies the standard backtracer and the new stacktrace
in memory backtracer. The standard one is converted to use callbacks
and then reimplement stacktrace using new callbacks.

The main advantage is that stacktrace can now use the new dwarf2 unwinder
and avoid false positives in many cases.

I kept it simple to make sure the standard backtracer stays reliable.

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Move unwind_init earlier
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Move unwind_init earlier

Needed for use of the unwinder in lockdep, because lockdep runs really
early too.

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Don't access the APIC in safe_smp_processor_id when it is not mapped yet
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Don't access the APIC in safe_smp_processor_id when it is not mapped yet

Lockdep can call the dwarf2 unwinder early, and the dwarf2 code
uses safe_smp_processor_id which tries to access the local APIC page.
But that doesn't work before the APIC code has set up its fixmap.

Check for this case and always return boot cpu then.

Cc: jbeulich@novell.com
Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Avoid recursion in lockdep when stack tracer takes locks
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] Avoid recursion in lockdep when stack tracer takes locks

The new dwarf2 unwinder needs to take locks to do backtraces
inside modules. This patch makes sure lockdep which calls
stacktrace is not reentered.

Thanks to Ingo for suggesting this simpler approach.

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: Some preparationary cleanup for stack trace
Andi Kleen [Tue, 26 Sep 2006 08:52:34 +0000 (10:52 +0200)]
[PATCH] x86: Some preparationary cleanup for stack trace

- Remove unused all_contexts parameter
No caller used it
- Move skip argument into the structure (needed for
followon patches)

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: eradicate sole remaining 80 chars per line offender
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: eradicate sole remaining 80 chars per line offender

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] remove tce_cache_blast_stress()
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] remove tce_cache_blast_stress()

tce_cache_blast_stress was useful during bringup to stress the IOMMU's
cache flushing. Now that we quiesce DMAs on every cache flush, using
_stress() brings the machine down to its knees once you put it under
load. Remove this debug / bringup code that isn't useful anymore
completely.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] only verify the allocation bitmap if CONFIG_IOMMU_DEBUG is on
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] only verify the allocation bitmap if CONFIG_IOMMU_DEBUG is on

Introduce new function verify_bit_range(). Define two versions, one
for CONFIG_IOMMU_DEBUG enabled and one for disabled. Previously we
were checking that the bitmap was consistent every time we allocated
or freed an entry in the TCE table, which is good for debugging but
incurs an unnecessary penalty on non debug builds.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] print whether CONFIG_IOMMU_DEBUG is enabled
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] print whether CONFIG_IOMMU_DEBUG is enabled

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix
Chuck Ebbert [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix

is_at_popf() needs to test for the iret instruction as well as
popf.  So add that test and rename it to is_setting_trap_flag().

Also change max insn length from 16 to 15 to match reality.

LAHF / SAHF can't affect TF, so the comment in x86_64 is removed.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: Remove unneeded externs in acpi/boot.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] x86: Remove unneeded externs in acpi/boot.c

And move one into proto.h

Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Replace local_save_flags+local_irq_disable with
Fernando Luis Vázquez Cao [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Replace local_save_flags+local_irq_disable with

The combination of "local_save_flags" and "local_irq_disable" seems to be
equivalent to "local_irq_save" (see code snips below). Consequently, replace
occurrences of local_save_flags+local_irq_disable with local_irq_save.

* local_irq_save
#define raw_local_irq_save(flags) \
                do { (flags) = __raw_local_irq_save(); } while (0)

static inline unsigned long __raw_local_irq_save(void)
{
        unsigned long flags = __raw_local_save_flags();

        raw_local_irq_disable();

        return flags;
}

* local_save_flags
#define raw_local_save_flags(flags) \
                do { (flags) = __raw_local_save_flags(); } while (0)

Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Fix sparse warnings in compat aout code
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Fix sparse warnings in compat aout code

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Fix most sparse warnings in sys_ia32.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Fix most sparse warnings in sys_ia32.c

Mostly by adding casts.

I didn't touch the "invalid access past ..." which are caused
by the sigset conversion.
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Add sparse annotations to quiet sparse in arch/x86_64/mm/fault.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Add sparse annotations to quiet sparse in arch/x86_64/mm/fault.c

Fixes

linux/arch/x86_64/mm/fault.c:125:7: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/mm/fault.c:125:7:    expected void [noderef] *<noident><asn:1>
linux/arch/x86_64/mm/fault.c:125:7:    got unsigned char *[assigned] instr
linux/arch/x86_64/mm/fault.c:163:8: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/mm/fault.c:163:8:    expected void [noderef] *<noident><asn:1>
linux/arch/x86_64/mm/fault.c:163:8:    got unsigned char *[assigned] instr
linux/arch/x86_64/mm/fault.c:179:9: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/mm/fault.c:179:9:    expected void [noderef] *<noident><asn:1>
linux/arch/x86_64/mm/fault.c:179:9:    got unsigned long *<noident>

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Add sparse annotation to vsyscall.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Add sparse annotation to vsyscall.c

Fixes

linux/arch/x86_64/kernel/vsyscall.c:276:7: warning: constant 0x0f40000000000 is so big it is long
linux/arch/x86_64/kernel/vsyscall.c:80:14: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:80:14:    expected void const volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:80:14:    got void *<noident>
linux/arch/x86_64/kernel/vsyscall.c:200:7: warning: incorrect type in assignment (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:200:7:    expected unsigned short [usertype] *map1
linux/arch/x86_64/kernel/vsyscall.c:200:7:    got void [noderef] *<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:203:7: warning: incorrect type in assignment (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:203:7:    expected unsigned short [usertype] *map2
linux/arch/x86_64/kernel/vsyscall.c:203:7:    got void [noderef] *<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:215:10: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:215:10:    expected void volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:215:10:    got unsigned short [usertype] *map2
linux/arch/x86_64/kernel/vsyscall.c:217:10: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:217:10:    expected void volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:217:10:    got unsigned short [usertype] *map1

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Move e820 map into e820.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Move e820 map into e820.c

Minor cleanup. Keep setup.c free from unrelated clutter.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Clean up acpi_numa variable
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] Clean up acpi_numa variable

Move it into srat.c No need to clutter up setup.c for it

And remove use in setup.c completely - it only guarded a printk
which can be done unconditionally.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386/x86-64: Move acpi_disabled variables into acpi/boot.c
Andi Kleen [Tue, 26 Sep 2006 08:52:33 +0000 (10:52 +0200)]
[PATCH] i386/x86-64: Move acpi_disabled variables into acpi/boot.c

Removes code duplication between i386/x86-64.

Not needed anymore in setup.c since early_param cleanup

Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Remove need for early lockdep init
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Remove need for early lockdep init

I think it was only needed for the printks and we can do them later.

I put in a single early_printk so that we know the kernel is alive
(early_printk doesn't need any locks)

This makes some things easier for initialization of unwind for
lockdep, which is needed by later patches.

cc: mingo@elte.hu

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Convert x86-64 to early param
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Convert x86-64 to early param

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 <ak@suse.de>
18 years ago[PATCH] i386: Replace i386 open-coded cmdline parsing with
Rusty Russell [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] i386: Replace i386 open-coded cmdline parsing with

This patch replaces the open-coded early commandline parsing
throughout the i386 boot code with the generic mechanism (already used
by ppc, powerpc, ia64 and s390).  The code was inconsistent with
whether it deletes the option from the cmdline or not, meaning some of
these will get passed through the environment into init.

This transformation is mainly mechanical, but there are some notable
parts:

1) Grammar: s/linux never set's it up/linux never sets it up/

2) Remove hacked-in earlyprintk= option scanning.  When someone
   actually implements CONFIG_EARLY_PRINTK, then they can use
   early_param().
[AK: actually it is implemented, but I'm adding the early_param it in the next
x86-64 patch]

3) Move declaration of generic_apic_probe() from setup.c into asm/apic.h

4) Various parameters now moved into their appropriate files (thanks Andi).

5) All parse functions which examine arg need to check for NULL,
   except one where it has subtle humor value.

AK: readded acpi_sci handling which was completely dropped
AK: moved some more variables into acpi/boot.c

Cc: len.brown@intel.com
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Allow early_param and identical __setup to exist
Rusty Russell [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Allow early_param and identical __setup to exist

We currently assume that boot parameters which are handled by
early_param() will not overlap boot parameters handled by __setup: if
they do, behaviour is dependent on link order, usually meaning __setup
will not get called.

ACPI wants to use early_param("pci"), and pci uses __setup("pci="), so
we modify the core to let them coexist: "pci=noacpi" will now get
passed to both.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Use early CPU identify before early command line parsing
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Use early CPU identify before early command line parsing

This makes it possible to modify CPU flags in command line
options without hacks.

And remove another copy in head64.c

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] remove lock prefix from is_at_popf() tests
Chuck Ebbert [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] remove lock prefix from is_at_popf() tests

The lock prefix will cause an exception when used with the
popf instruction, so no need to continue searching after it's
found.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] remove superflous BUG_ON's in nommu and gart
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] remove superflous BUG_ON's in nommu and gart

There's no need to check for invalid DMA data direction in nommu and
gart since we do it in dma-mapping.h anyway before calling the
individual dma-ops.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Fix gdt table size in trampoline.S
Eric W. Biederman [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Fix gdt table size in trampoline.S

Allows easier extension of the GDT by using the proper C symbol
for the size in the descriptor.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] annotate arch/x86_64/lib/*.S
Jan Beulich [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] annotate arch/x86_64/lib/*.S

Add unwind annotations to arch/x86_64/lib/*.S, and also use the macros
provided by linux/linkage.h where-ever possible.

Some of the alternative instructions handling needed to be adjusted so
that the replacement code would also have valid unwind information.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Clean up spin/rwlocks
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] i386: Clean up spin/rwlocks

- Inline spinlock strings into their inline functions
- Convert macros to typesafe inlines
- Replace some leftover __asm__ __volatile__s with asm volatile

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Clean up spin/rwlocks
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Clean up spin/rwlocks

- Inline spinlock strings into their inline functions
- Convert macros to typesafe inlines
- Replace some leftover __asm__ __volatile__s with asm volatile

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] fix is_at_popf() for compat tasks
Chuck Ebbert [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] fix is_at_popf() for compat tasks

When testing for the REX instruction prefix, first check
for 32-bit mode because in compat mode the REX prefix is an
increment instruction.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Don't use lock section for mutexes and semaphores
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] Don't use lock section for mutexes and semaphores

Lock sections cannot be handled by the dwarf2 unwinder.

Disadvantage is a taken branch in the hot path.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Remove lock section support in semaphore.h
Andi Kleen [Tue, 26 Sep 2006 08:52:32 +0000 (10:52 +0200)]
[PATCH] i386: Remove lock section support in semaphore.h

Lock sections don't work the new dwarf2 unwinder
This generates slightly smaller code. It adds one more taken
jump to the fast path.

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Remove lock section support in rwsem.h
Andi Kleen [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] i386: Remove lock section support in rwsem.h

Lock sections don't work the new dwarf2 unwinder
This generates slightly smaller code. It adds one more taken
jump to the fast path.

Also move the trampolines into semaphore.S and add proper CFI
annotations.

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Remove lock section support in mutex.h
Andi Kleen [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] i386: Remove lock section support in mutex.h

Lock sections don't work the new dwarf2 unwinder
This generates slightly smaller code. It adds one more taken
jump to the fast path.

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: save a bit of space in bus_info
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: save a bit of space in bus_info

Make translation_disabled a uchar rather than an int

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: calgary_init_one_nontraslated() can return void
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: calgary_init_one_nontraslated() can return void

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: fix reference counting of Calgary PCI devices
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: fix reference counting of Calgary PCI devices

The pci_get_device() API decrements the reference count on the 'from'
parameter when it continues searching. Therefore, take a ref count on
Calgary bus when we initialize them in either translated or
non-translated mode.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: fix error path memleak in calgary_free_tar
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: fix error path memleak in calgary_free_tar

We were freeing the iommu_table and leaking the bitmap pages. Also
rename it to calgary_free_bus, which is more accurate.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: break out of pci_find_device_reverse if dev not found
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: break out of pci_find_device_reverse if dev not found

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: consolidate per bus data structures
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: consolidate per bus data structures

Move the tce_table_kva array, disabled bitmap and bus_to_phb array
into a new per bus 'struct calgary_bus_info'. Also slightly reorganize
build_tce_table and tce_table_setparms to avoid exporting bus_info to
tce.c.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Calgary IOMMU: rearrange 'struct iommu_table' members
Muli Ben-Yehuda [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Calgary IOMMU: rearrange 'struct iommu_table' members

Rearrange struct members loosely based on size for improved alignment
and to save a few bytes.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Add stack documentation document from Keith Owens
Andi Kleen [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Add stack documentation document from Keith Owens

Describes the stack organization on x86-64.

I changed it a bit and removed some obsolete information and the
questions.

Cc: kaos@sgi.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: initialize end-of-memory variables as early as possible
Jan Beulich [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] i386: initialize end-of-memory variables as early as possible

Move initialization of all memory end variables to as early as
possible, so that dependent code doesn't need to check whether these
variables have already been set.

Change the range check in kunmap_atomic to actually make use of this
so that the no-mapping-estabished path (under CONFIG_DEBUG_HIGHMEM)
gets used only when the address is inside the lowmem area (and BUG()
otherwise).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] remove int_delivery_dest
Jan Beulich [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] remove int_delivery_dest

The genapic field and the accessor macro weren't used anywhere.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] initialize end of memory variables as early as possible
Jan Beulich [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] initialize end of memory variables as early as possible

While an earlier patch already did a small step into that direction,
this patch moves initialization of all memory end variables to as
early as possible, so that dependent code doesn't need to check
whether these variables have already been set.

Also, remove a misleading (perhaps just outdated) comment, and make
static a variable only used in a single file.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Remove obsolete CVS $Id$ from assembler files in arch/x86_64/kernel/*
Andi Kleen [Tue, 26 Sep 2006 08:52:31 +0000 (10:52 +0200)]
[PATCH] Remove obsolete CVS $Id$ from assembler files in arch/x86_64/kernel/*

CVS hasn't been used for a long time for them.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: Detect CFI support in the assembler at runtime
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] x86: Detect CFI support in the assembler at runtime

... instead of using a CONFIG option. The config option still controls
if the resulting executable actually has unwind information.

This is useful to prevent compilation errors when users select
CONFIG_STACK_UNWIND on old binutils and also allows to use
CFI in the future for non kernel debugging applications.

Cc: jbeulich@novell.com
Cc: sam@ravnborg.org
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Use BUILD_BUG_ON in apic.c build sanity checking
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Use BUILD_BUG_ON in apic.c build sanity checking

Makes code a little shorter.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Clean up code style in mpparse.c ACPI code
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] i386: Clean up code style in mpparse.c ACPI code

Remove some unlinuxy ways to write function parameter definitions.
Remove some stray "return;"s

No functional change.

Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Fix up some non linuxy style in ACPI functions in mpparse.c
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Fix up some non linuxy style in ACPI functions in mpparse.c

No functional changes.

Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Remove some unneeded ACPI externs in mpparse.c
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Remove some unneeded ACPI externs in mpparse.c

They are not used in this file so remove them. i386 didn't have them either.

Cc: len.brown@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Remove useless wrapper in mpparse.c code
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Remove useless wrapper in mpparse.c code

It used to contain support code for NUMAQ, but that is long gone already
on 64bit.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Replace mp bus array with bitmap for bus not pci
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Replace mp bus array with bitmap for bus not pci

Since we only support PCI and ISA legacy busses now there is no need to
have an full array with checking.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Move early chipset quirks out to new file
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Move early chipset quirks out to new file

They did not really belong into io_apic.c. Move them into a new file
and clean it up a bit.

Also remove outdated ATI quirk that was obsolete,

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Remove MPS table APIC renumbering
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Remove MPS table APIC renumbering

The MPS table specification says that the operating system should
renumber the IO-APICs following the table as needed.  However in
ACPI this is not allowed or neeeded and all x86-64 systems are ACPI
compliant.

The code was already disabled on some systems because it caused
problems there. Remove it completely now.

CC: mdomsch@dell.com
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] x86: AUX_DEVICE_INFO is one byte long, use 'movb'
Diego Calleja [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] x86: AUX_DEVICE_INFO is one byte long, use 'movb'

Bugzilla #6552 says:

"In arch/i386/boot/setup.S, movw is used instead of movb for PS/2 mouse
information, although it is unsigned char. This does not harm, because
the jmp instruction overwritten by movw is used before executing movw,
and never be used again"

I've no idea if this is a real bug or how it gets fixed, so I'm submitting
it for review instead of letting it die of boredom in bugzilla. Aditionally
to i386, I've changed x86-64, which mirrors the same code.

Credits to Yoshinori K. Okuji, who found the problem and suggested a fix.

Signed-off-by: Diego Calleja <diegocg@gmail.com>
Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386: Factor out common io apic routing entry access
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] i386: Factor out common io apic routing entry access

The IO APIC code had lots of duplicated code to read/write 64bit
routing entries into the IO-APIC. Factor this out int common read/write
functions

In a few cases the IO APIC lock is taken more often now, but this
isn't a problem because it's all initialization/shutdown only
slow path code.

Similar to earlier x86-64 patch.

Includes a fix by Jiri Slaby for a mistake that broke resume

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] Factor out common io apic routing entry access
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] Factor out common io apic routing entry access

The IO APIC code had lots of duplicated code to read/write 64bit
routing entries into the IO-APIC. Factor this out int common read/write
functions

In a few cases the IO APIC lock is taken more often now, but this
isn't a problem because it's all initialization/shutdown only
slow path code.

Signed-off-by: Andi Kleen <ak@suse.de>
18 years ago[PATCH] i386/x86-64: Remove obsolete sanity check in mptable parsing
Andi Kleen [Tue, 26 Sep 2006 08:52:30 +0000 (10:52 +0200)]
[PATCH] i386/x86-64: Remove obsolete sanity check in mptable parsing

It apparently has never triggered in many years.

Signed-off-by: Andi Kleen <ak@suse.de>