x86: clean up cpu capabilities in arch/x86/kernel/cpu/intel.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses, cyrix.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses, common.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses, centaur.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses, amd.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses, generic

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up cpu capabilities accesses

introduce test_cpu_cap() for raw access to the real CPU
capabilities as they are present in x86_capability.

(cpu_has() will shortcut certain tests during build-time)

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: remove wrong setting about CONSTANT_TSC for intel cpu

early_init_intel() on 64-bit is introduced by

  commit 2b16a2353814a513cdb5c5c739b76a19d7ea39ce
  Author: Andi Kleen <ak@suse.de>
  Date:   Wed Jan 30 13:32:40 2008 +0100

      x86: move X86_FEATURE_CONSTANT_TSC into early cpu feature detection

sets CONSTANT_TSC for intel cpus - but it is already set in init_intel().

don't need to set that two times in early_init_intel() and init_intel().
this patch removes the init_intel() one.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86, rdc321x: remove watchdog file

remove the arch/x86/mach-rdc321x/wdt.c file.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: apic_is_clustered_box for vsmp

quad core 8 socket system will have apic id lifting.the apic id range could
be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
and that is larger than 2. So it is treated as a clustered_box.

and will get:

   Marking TSC unstable due to TSCs unsynchronized

even if the CPUs have X86_FEATURE_CONSTANT_TSC set.

this quick fix will check if the cpu is from AMD.

but vsmp still needs that checking...

this patch is fix to make sure that vsmp not to be passed.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/common.c

Before:
   total: 55 errors, 6 warnings, 727 lines checked
After:
   total: 0 errors, 3 warnings, 734 lines checked

No code changed:

arch/x86/kernel/cpu/common.o:

   text    data     bss     dec     hex filename
   3500    4611      44    8155    1fdb common.o.before
   3500    4611      44    8155    1fdb common.o.after

md5:
   e37091f11fbeb682c0db152ac3022a38  common.o.before.asm
   e37091f11fbeb682c0db152ac3022a38  common.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/power/cpu_32.c

Before:
   total: 15 errors, 3 warnings, 133 lines checked
After:
   total: 0 errors, 0 warnings, 138 lines checked

No code changed:

arch/x86/power/cpu_32.o:

   text    data     bss     dec     hex filename
    739       0      84     823     337 cpu_32.o.before
    739       0      84     823     337 cpu_32.o.after

md5:
   eb0726223a5e26b195e65f0ae2c0ec66  cpu_32.o.before.asm
   eb0726223a5e26b195e65f0ae2c0ec66  cpu_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/xen/multicalls.c

Before:
   total: 2 errors, 2 warnings, 138 lines checked
After:
   total: 0 errors, 2 warnings, 138 lines checked

No code changed:

arch/x86/xen/multicalls.o:

   text    data     bss     dec     hex filename
    887    2832       0    3719     e87 multicalls.o.before
    887    2832       0    3719     e87 multicalls.o.after

md5:
   cf6d72d9db6dc5a3ebe01eec9f05e95f  multicalls.o.before.asm
   cf6d72d9db6dc5a3ebe01eec9f05e95f  multicalls.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/msr.c

Before:
   total: 2 errors, 0 warnings, 231 lines checked
After:
   total: 0 errors, 0 warnings, 231 lines checked

No code changed:

arch/x86/kernel/msr.o:

   text    data     bss     dec     hex filename
   1199      12       4    1215     4bf msr.o.before
   1199      12       4    1215     4bf msr.o.after

md5:
   604be0d07d829bc52a9346babd084bdc  msr.o.before.asm
   604be0d07d829bc52a9346babd084bdc  msr.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/oprofile/nmi_timer_int.c

Before:
   total: 3 errors, 0 warnings, 69 lines checked
After:
   total: 0 errors, 0 warnings, 69 lines checked

No code changed:

arch/x86/oprofile/nmi_timer_int.o:

   text    data     bss     dec     hex filename
    180      12       0     192      c0 nmi_timer_int.o.before
    180      12       0     192      c0 nmi_timer_int.o.after

md5:
   0433c31d758e81da574e01722a8036ea  nmi_timer_int.o.before.asm
   0433c31d758e81da574e01722a8036ea  nmi_timer_int.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/cyrix.c

Before:
   total: 46 errors, 10 warnings, 450 lines checked
After:
   total: 1 errors, 10 warnings, 449 lines checked

No code changed:

arch/x86/kernel/cpu/cyrix.o:

   text    data     bss     dec     hex filename
   2048     908       4    2960     b90 cyrix.o.before
   2048     908       4    2960     b90 cyrix.o.after

md5:
   9add5e69dbd788f91ff24eea8462dad7  cyrix.o.before.asm
   9add5e69dbd788f91ff24eea8462dad7  cyrix.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/boot/cpucheck.c

Before:
   total: 30 errors, 0 warnings, 262 lines checked
After:
   total: 0 errors, 0 warnings, 262 lines checked

No code changed:

arch/x86/boot/cpucheck.o:

   text    data     bss     dec     hex filename
    989       0      96    1085     43d cpucheck.o.before
    989       0      96    1085     43d cpucheck.o.after

md5:
   06634cfefb8438fa284ff903b4cafbce  cpucheck.o.before.asm
   06634cfefb8438fa284ff903b4cafbce  cpucheck.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mcheck/mce_32.c

Before:
   total: 10 errors, 3 warnings, 90 lines checked
After:
   total: 0 errors, 3 warnings, 90 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/mce_32.o:

   text    data     bss     dec     hex filename
    287      42      12     341     155 mce_32.o.before
    287      42      12     341     155 mce_32.o.after

md5:
   fede5ff8e6bc3f62e8e691ca6c45eb39  mce_32.o.before.asm
   fede5ff8e6bc3f62e8e691ca6c45eb39  mce_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mcheck/winchip.c

Before:
   total: 4 errors, 0 warnings, 36 lines checked
After:
   total: 0 errors, 0 warnings, 36 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/winchip.o:

   text    data     bss     dec     hex filename
    222       0       4     226      e2 winchip.o.before
    222       0       4     226      e2 winchip.o.after

md5:
   9caefa12256c5f7d71ef324f6d01a2d5  winchip.o.before.asm
   9caefa12256c5f7d71ef324f6d01a2d5  winchip.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mcheck/non-fatal.c

Before:
   total: 5 errors, 5 warnings, 91 lines checked
After:
   total: 0 errors, 0 warnings, 94 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/non-fatal.o:

   text    data     bss     dec     hex filename
    441      80       4     525     20d non-fatal.o.before
    441      80       4     525     20d non-fatal.o.after

md5:
   137bc114d2020ad331d5e76444a2c7d3  non-fatal.o.before.asm
   137bc114d2020ad331d5e76444a2c7d3  non-fatal.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/vm86_32.c

Before:
   total: 64 errors, 18 warnings, 840 lines checked
After:
   total: 12 errors, 15 warnings, 844 lines checked

No code changed:

arch/x86/kernel/vm86_32.o:

   text    data     bss     dec     hex filename
   4449      28     132    4609    1201 vm86_32.o.before
   4449      28     132    4609    1201 vm86_32.o.after

md5:
   e4e51ed7689d17f04148554a3c6d5bb6  vm86_32.o.before.asm
   e4e51ed7689d17f04148554a3c6d5bb6  vm86_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/amd.c

Before:
   total: 42 errors, 26 warnings, 350 lines checked
After:
   total: 0 errors, 26 warnings, 352 lines checked

No code changed:

arch/x86/kernel/cpu/amd.o:

   text    data     bss     dec     hex filename
   1936     328       0    2264     8d8 amd.o.before
   1936     328       0    2264     8d8 amd.o.after

md5:
   873430a88faaf31bb4bbfe3a2a691e45  amd.o.before.asm
   873430a88faaf31bb4bbfe3a2a691e45  amd.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/transmeta.c

Before:
   total: 13 errors, 3 warnings, 105 lines checked
After:
   total: 0 errors, 3 warnings, 107 lines checked

No code changed:

arch/x86/kernel/cpu/transmeta.o:

   text    data     bss     dec     hex filename
    713     324       0    1037     40d transmeta.o.before
    713     324       0    1037     40d transmeta.o.after

md5:
   19abe2cafac617e1e2aadc4aa4e9923b  transmeta.o.before.asm
   19abe2cafac617e1e2aadc4aa4e9923b  transmeta.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/lib/memcpy_32.c

Before:
   total: 2 errors, 0 warnings, 43 lines checked
After:
   total: 0 errors, 0 warnings, 43 lines checked

No code changed:

arch/x86/lib/memcpy_32.o:

   text    data     bss     dec     hex filename
    164       0       0     164      a4 memcpy_32.o.before
    164       0       0     164      a4 memcpy_32.o.after

md5:
   d759f55621af27f51720b59c8ca96a4d  memcpy_32.o.before.asm
   d759f55621af27f51720b59c8ca96a4d  memcpy_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mtrr/state.c

Before:
   total: 6 errors, 5 warnings, 80 lines checked
After:
   total: 0 errors, 4 warnings, 82 lines checked

No code changed:

arch/x86/kernel/cpu/mtrr/state.o:

   text    data     bss     dec     hex filename
    313       0       4     317     13d state.o.before
    313       0       4     317     13d state.o.after

md5:
   a0fbd61096205f9180f0bf45ed386d61  state.o.before.asm
   a0fbd61096205f9180f0bf45ed386d61  state.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/mca_32.c

Before:
   total: 42 errors, 3 warnings, 469 lines checked
After:
   total: 0 errors, 3 warnings, 479 lines checked

No code changed:

arch/x86/kernel/mca_32.o:

   text    data     bss     dec     hex filename
   1832     288       5    2125     84d mca_32.o.before
   1832     288       5    2125     84d mca_32.o.after

md5:
   c0e45e2b743ce26349eb07dc53e80b94  mca_32.o.before.asm
   c0e45e2b743ce26349eb07dc53e80b94  mca_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/lib/strstr_3

Before:
   total: 3 errors, 0 warnings, 31 lines checked
After:
   total: 0 errors, 0 warnings, 31 lines checked

No code changed:

arch/x86/lib/strstr_32.o:

   text    data     bss     dec     hex filename
     49       0       0      49      31 strstr_32.o.before
     49       0       0      49      31 strstr_32.o.after

md5:
   a224a7c4082e75a4f31f9d91dd34fe8e  strstr_32.o.before.asm
   a224a7c4082e75a4f31f9d91dd34fe8e  strstr_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/oprofile/init.c

Before:
   total: 5 errors, 4 warnings, 48 lines checked
After:
   total: 0 errors, 4 warnings, 49 lines checked

No code changed:

arch/x86/oprofile/init.o:

   text    data     bss     dec     hex filename
     42       0       0      42      2a init.o.before
     42       0       0      42      2a init.o.after

md5:
   74c94c315cfbf245aeba36eceac57e66  init.o.before.asm
   74c94c315cfbf245aeba36eceac57e66  init.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/intel.c

Before:
   total: 37 errors, 16 warnings, 366 lines checked
After:
   total: 0 errors, 15 warnings, 369 lines checked

No code changed:

arch/x86/kernel/cpu/intel.o:

   text    data     bss     dec     hex filename
   1534     452       0    1986     7c2 intel.o.before
   1534     452       0    1986     7c2 intel.o.after

md5:
   1ca348a06de6eb354c4b6ea715a57db5  intel.o.before.asm
   1ca348a06de6eb354c4b6ea715a57db5  intel.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/summit_32.c

Before:
   total: 20 errors, 17 warnings, 180 lines checked
After:
   total: 0 errors, 17 warnings, 183 lines checked

No code changed:

arch/x86/kernel/summit_32.o:

   text    data     bss     dec     hex filename
    932     192       0    1124     464 summit_32.o.before
    932     192       0    1124     464 summit_32.o.after

md5:
   217aa5f002f217e56ef9d8e5c74b60e0  summit_32.o.before.asm
   217aa5f002f217e56ef9d8e5c74b60e0  summit_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fix to arch/x86/boot/pm.c

Before:
   total: 1 errors, 0 warnings, 178 lines checked
After:
   total: 0 errors, 0 warnings, 178 lines checked

No code changed:

arch/x86/boot/pm.o:

   text    data     bss     dec     hex filename
    351       0       6     357     165 pm.o.before
    351       0       6     357     165 pm.o.after

md5:
   81de3616bceb29691bf835bb62a84ff1  pm.o.before.asm
   81de3616bceb29691bf835bb62a84ff1  pm.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: insert_resorce for lapic addr after e820_reserve_resources

when comparing the e820 direct from BIOS, and the one by kexec:

 BIOS-provided physical RAM map:
- BIOS-e820: 0000000000000000 - 0000000000097400 (usable)
+ BIOS-e820: 0000000000000100 - 0000000000097400 (usable)
  BIOS-e820: 0000000000097400 - 00000000000a0000 (reserved)
  BIOS-e820: 00000000000e6000 - 0000000000100000 (reserved)
  BIOS-e820: 0000000000100000 - 00000000dffa0000 (usable)
- BIOS-e820: 00000000dffae000 - 00000000dffb0000 type 9
+ BIOS-e820: 00000000dffae000 - 00000000dffb0000 (reserved)
  BIOS-e820: 00000000dffb0000 - 00000000dffbe000 (ACPI data)
  BIOS-e820: 00000000dffbe000 - 00000000dfff0000 (ACPI NVS)
  BIOS-e820: 00000000dfff0000 - 00000000e0000000 (reserved)
  BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
- BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
             =======> that is the local apic address... somewhere we lost it
  BIOS-e820: 00000000ff700000 - 0000000100000000 (reserved)
  BIOS-e820: 0000000100000000 - 0000004020000000 (usable)

found one entry about reserved is missing for the kernel by kexec.

it turns out init_apic_mappings is called before e820_reserve_resources
in setup_arch. but e820_reserve_resources is using request_resource.
it will not handle the conflicts.

there are three ways to fix it:

1. change request_resource in e820_reserve_resources to to insert_resource
2. move init_apic_mappings after e820_reserve_resources
3. use late_initcall to insert lapic resource.

this patch is using method 3, that is less intrusive.

in later version could consider to use method 1.

before patch
fed20000-ffffffff : PCI Bus #00
  fee00000-fee00fff : Local APIC
  fefff000-feffffff : pnp 00:09
  ff700000-ffffffff : reserved

with patch will get map in first kernel

fed20000-ffffffff : PCI Bus #00
  fee00000-fee00fff : Local APIC
    fee00000-fee00fff : reserved
  fefff000-feffffff : pnp 00:09
  ff700000-ffffffff : reserved

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up e820_reserve_resources on 64-bit

e820_resource_resources could use insert_resource instead of request_resource
also move code_resource, data_resource, bss_resource, and crashk_res
out of e820_reserve_resources.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: introduce kernel/head32.c

Copy x86_64 and add a head32.c so we can start moving early
architecture initialization out of assembly.

[ Sam Ravnborg <sam@ravnborg.org>: updated it to x86 ]

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: make amd quad core 8 socket system not be clustered_box, #2

quad core 8 socket system will have apic id lifting.the apic id range could
be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
and that is large than 2. So it is treated as clustered_box.

and will get

Marking TSC unstable due to TSCs unsynchronized

even the CPUs have X86_FEATURE_CONSTANT_TSC set.

this patch will check if the cpu is from AMD.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: de-macro start_thread()

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: more cleanups in arch/x86/boot/compressed/misc.c

Before:
   total: 7 errors, 8 warnings, 471 lines checked
After:
   total: 5 errors, 5 warnings, 479 lines checked

( the rest cannot be eliminated due to zlib interface cruftiness. )

No code changed:

arch/x86/boot/compressed/misc.o:

   text    data     bss     dec     hex filename
  10716       8    2152   12876    324c misc.o.before
  10716       8    2152   12876    324c misc.o.after

md5:
   2c20c903986a3c9bca44306c6646067e  misc.o.before.asm
   2c20c903986a3c9bca44306c6646067e  misc.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/boot/compressed/misc.c

Fix lots of style errors and warnings.

Before:
   total: 58 errors, 9 warnings, 469 lines checked
After:
   total: 7 errors, 8 warnings, 471 lines checked

No code changed:

arch/x86/boot/compressed/misc.o:

   text    data     bss     dec     hex filename
  10716       8    2152   12876    324c misc.o.before
  10716       8    2152   12876    324c misc.o.after

md5:
   2c20c903986a3c9bca44306c6646067e  misc.o.before.asm
   2c20c903986a3c9bca44306c6646067e  misc.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/umc.c

Before:
   total: 3 errors, 1 warnings, 23 lines checked
After:
   total: 0 errors, 0 warnings, 25 lines checked

No code changed:

arch/x86/kernel/cpu/umc.o:

   text    data     bss     dec     hex filename
     24     616       0     640     280 umc.o.before
     24     616       0     640     280 umc.o.after

md5:
   e8daa3eaed0963a0cdd2e83c2e1f9823  umc.o.before.asm
   e8daa3eaed0963a0cdd2e83c2e1f9823  umc.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p6.c

Before:
   total: 16 errors, 13 warnings, 122 lines checked
After:
   total: 0 errors, 0 warnings, 122 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/p6.o:

   text    data     bss     dec     hex filename
   1082       0       8    1090     442 p6.o.before
   1082       0       8    1090     442 p6.o.after

md5:
   4e283fbc1b68240f1724d9725007d379  p6.o.before.asm
   4e283fbc1b68240f1724d9725007d379  p6.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: clean up include/asm-x86/processor.h

basic style cleanup to flush out years of neglect:

 - consistent indentation
 - whitespace fixes
 - consistent comments

Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: unify cpu/proc|_64.c

Now cpu/proc.c and cpu/proc_64.c are same.
So cpu/proc_64.c can be removed.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: cosmetic unification cpu/proc|_64.c

make cpu/proc.c and cpu/proc_64.c same.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: add power management line in /proc/cpuinfo

Change /proc/cpuinfo on 32-bit, it will look like on 64-bit.
'power management' line is added and power management information
will be printed at the line.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: make cpu/proc|_64.c similar

clean up for unification.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: split cpuinfo from setup_64.c into cpu/proc_64.c

x86 /proc/cpuinfo code can be unified.
This is the first step of unification.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/mach-generic/bigsmp.c

arch/x86/mach-generic/bigsmp.o:
   text    data     bss     dec     hex filename
   1271     144       4    1419     58b bigsmp.o.before
   1271     144       4    1419     58b bigsmp.o.after
md5:
 b83aad375294c002c79b03c3a2e4be35  bigsmp.o.before.asm
 b83aad375294c002c79b03c3a2e4be35  bigsmp.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/nexgen.c

arch/x86/kernel/cpu/nexgen.o:
   text    data     bss     dec     hex filename
    111     316       0     427     1ab nexgen.o.before
    111     316       0     427     1ab nexgen.o.after
md5:
 e796efefea9ebc6644338bad226599ee  nexgen.o.before.asm
 e796efefea9ebc6644338bad226599ee  nexgen.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/mach-generic/summit.c

File is now error/warning free.

arch/x86/mach-generic/summit.o:
   text    data     bss     dec     hex filename
   1481     140       0    1621     655 summit.o.before
   1481     140       0    1621     655 summit.o.after
md5:
 7b7dc1cbd381af7b9393da989da5b0fd  summit.o.before.asm
 7b7dc1cbd381af7b9393da989da5b0fd  summit.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/mach-generic/default.c

Just whitespace cleanups.

total: 0 errors, 0 warnings, 26 lines checked
arch/x86/mach-generic/default.c has no obvious style problems and is ready for submission.

arch/x86/mach-generic/default.o:
   text    data     bss     dec     hex filename
   1036     140       0    1176     498 default.o.before
   1036     140       0    1176     498 default.o.after
md5:
f283c53022c568f3162bbcde44f65762  default.o.before.asm
f283c53022c568f3162bbcde44f65762  default.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/mach-generic/probe.c

The patch kills 20 errors and a few warnings.

arch/x86/mach-generic/probe.o:
   text    data     bss     dec     hex filename
    578      45       0     623     26f probe.o.before
    578      45       0     623     26f probe.o.after
md5:
86eb1c3e3cf37f81d37bcd9a0c9f14ad  probe.o.before.asm
86eb1c3e3cf37f81d37bcd9a0c9f14ad  probe.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/oprofile/op_model_athlon.c

The patch fixes 33 errors and a few warnings reported by checkpatch.pl

arch/x86/oprofile/op_model_athlon.o:
   text    data     bss     dec     hex filename
   1691       0      32    1723     6bb op_model_athlon.o.before
   1691       0      32    1723     6bb op_model_athlon.o.after
md5:
c354bc2d7140e1e626c03390eddaa0a6  op_model_athlon.o.before.asm
c354bc2d7140e1e626c03390eddaa0a6  op_model_athlon.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/oprofile/op_model_ppro.c

no code changed:

arch/x86/oprofile/op_model_ppro.o:
   text    data     bss     dec     hex filename
   1765       0      16    1781     6f5 op_model_ppro.o.before
   1765       0      16    1781     6f5 op_model_ppro.o.after
md5:
71c7f68d2197d686e3d1121bc18a6b6e  op_model_ppro.o.before.asm
71c7f68d2197d686e3d1121bc18a6b6e  op_model_ppro.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/x8664_ksyms_64.c

arch/x86/kernel/x8664_ksyms_64.o:
   text    data     bss     dec     hex filename
      0       0       0       0       0 x8664_ksyms_64.o.before
      0       0       0       0       0 x8664_ksyms_64.o.after
md5:
2dd2d82a2b440a3c29b9ac9ce3221994  x8664_ksyms_64.o.before.asm
2dd2d82a2b440a3c29b9ac9ce3221994  x8664_ksyms_64.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p5.c

The patch make the file errors free.
Only 4 "WARNING: line over 80 characters" left.

arch/x86/kernel/cpu/mcheck/p5.o:
   text    data     bss     dec     hex filename
    452       0       4     456     1c8 p5.o.before
    452       0       4     456     1c8 p5.o.after
md5:
50c945ef150aa95bf0481cc3e1dc3315  p5.o.before.asm
50c945ef150aa95bf0481cc3e1dc3315  p5.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/lib/string_32.c

The patch kills 45 errors and a few warnings.

The file is now error/warning free:
total: 0 errors, 0 warnings, 237 lines checked
arch/x86/lib/string_32.c has no obvious style problems and is ready for submission.

no code changed:

arch/x86/lib/string_32.o:
   text    data     bss     dec     hex filename
    639       0       0     639     27f string_32.o.before
    639       0       0     639     27f string_32.o.after
md5:
2db1c48187cf5113bb595153ee1fc73d  string_32.o.before.asm
2db1c48187cf5113bb595153ee1fc73d  string_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/kernel/syscall_64.c

After the patch:
total: 0 errors, 1 warnings, 29 lines checked

no code changed:

arch/x86/kernel/syscall_64.o:
   text    data     bss     dec     hex filename
   2304       0       0    2304     900 syscall_64.o.before
   2304       0       0    2304     900 syscall_64.o.after
md5:
0fdbb875cde8892296585226b92f4333  syscall_64.o.before.asm
0fdbb875cde8892296585226b92f4333  syscall_64.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: coding style fixes to arch/x86/lib/memmove_64.c

After the patch:

  total: 0 errors, 0 warnings, 21 lines checked

no code changed:

arch/x86/lib/memmove_64.o:
   text    data     bss     dec     hex filename
    116       0       0     116      74 memmove_64.o.before
    116       0       0     116      74 memmove_64.o.after
md5:
2d6b0951cafb86a11a222cdd70f6104f  memmove_64.o.before.asm
2d6b0951cafb86a11a222cdd70f6104f  memmove_64.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: boot protocol updates

Also update field names to simply payload_{offset,length} so as to not rule
out uncompressed images.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: define outb_pic and inb_pic to stop using outb_p and inb_p

x86: define outb_pic and inb_pic to stop using outb_p and inb_p

The delay between io port accesses to the PIC is now defined using outb_pic
and inb_pic.  This fix provides the next step, using udelay(2) to define the
*PIC specific* timing requirements, rather than on bus-oriented timing, which
is not well calibrated.

Again, the primary reason for fixing this is to use proper delay strategy,
and in particular to fix crashes that can result from using port 80 writes
on machines that have resources on port 80, such as the ENE chips used by Quanta
in latops it designs and sells to, e.g. HP.

Signed-off-by: David P. Reed <dpreed@reed.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: reduce arch/x86/mm/ioremap.o size

> Don't we have a special section for page-aligned data so it doesn't
> waste most of two pages?

We have .bss.page_aligned and it seems appropriate to use it.

    text    data     bss     dec     hex filename
    -   3388    8236       4   11628    2d6c ../build-32/arch/x86/mm/ioremap.o
    +   3388      48    4100    7536    1d70 ../build-32/arch/x86/mm/ioremap.o

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: more coding style fixes in centaur.c

no code changed:

 arch/x86/kernel/cpu/centaur.o:
    text    data     bss     dec     hex filename
    1031     324       0    1355     54b centaur.o.before
    1031     324       0    1355     54b centaur.o.after

 md5:
  4f306a7f980b58eb69c4bdcfcde565f1  centaur.o.before.asm
  4f306a7f980b58eb69c4bdcfcde565f1  centaur.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: coding style fixes for arch/x86/kernel/cpu/centaur.c

Kills more than 150 errors/warnings

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: clean up mmx_32.c

checkpatch.pl --file cleanups:

  before:
    total: 74 errors, 3 warnings, 386 lines checked

  after:
    total: 0 errors, 0 warnings, 377 lines checked

no code changed:

arch/x86/lib/mmx_32.o:
   text    data     bss     dec     hex filename
   1323       0       8    1331     533 mmx_32.o.before
   1323       0       8    1331     533 mmx_32.o.after

md5:
   4cc39f1017dc40a5ebf02ce0ff7312bc  mmx_32.o.before.asm
   4cc39f1017dc40a5ebf02ce0ff7312bc  mmx_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: fix cmos read and write to not use inb_p and outb_p

fix code to access CMOS rtc registers so that it does not use inb_p and
outb_p routines, which are deprecated.  Extensive research on all known
CMOS RTC chipset timing shows that there is no need for a delay in
accessing the registers of these chips even on old machines. These chipa
are never on an expansion bus, but have always been "motherboard"
resources, either in the processor chipset or explicitly on the
motherboard, and they are not part of the ISA/LPC or PCI buses, so
delays should not be based on bus timing. The reason to fix it:

 1) port 80 writes often hang some laptops that use ENE EC chipsets,
    esp. those designed and manufactured by Quanta for HP;

 2) RTC accesses are timing sensitive, and extra microseconds may matter;

 3) the new "io_delay" function is calibrated by expansion bus timing needs,
    thus is not appropriate for access to CMOS rtc registers.

Signed-off-by: David P. Reed <dpreed@reed.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: use ELF section to list CPU vendor specific code

Replace the hardcoded list of initialization functions for each CPU
vendor by a list in an ELF section, which is read at initialization in
arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF
section, named .x86cpuvendor.init, is reclaimed after boot, and
contains entries of type "struct cpu_vendor_dev" which associates a
vendor number with a pointer to a "struct cpu_dev" structure.

This first modification allows to remove all the VENDOR_init_cpu()
functions.

This patch also removes the hardcoded calls to early_init_amd() and
early_init_intel(). Instead, we add a "c_early_init" member to the
cpu_dev structure, which is then called if not NULL by the generic CPU
initialization code. Unfortunately, in early_cpu_detect(), this_cpu is
not yet set, so we have to use the cpu_devs[] array directly.

This patch is part of the Linux Tiny project, and is needed for
further patch that will allow to disable compilation of unused CPU
support code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86, vsmp: use the paravirt helpers

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: introduce vsmp paravirt helpers

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: call vsmp_init explicitly

It becomes to early for ioremap, so we use early_ioremap

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: make vsmp_init void, instead of static int

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: change vsmp compile dependency

Change Makefile so vsmp_64.o object is dependent
on PARAVIRT, rather than X86_VSMP

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: apic: extended interrupt LVT support for AMD

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: remove never used nodenumer in pda

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: get apic_id later in acpi_numa_processor_affinity_init

we don't need get that so early.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: reducing debuginfo size by removing unneeded includes

I found it strange that the struct sk_buff definition was found
inside the DWARF debugging sections in the generated object, so I verified
and found that there is no need for the files that bring struct sk_buff
definition into this file and verified also that sk_buff is not brought
in indirectly too, thru other headers.

I went on and removed many other unneeded includes and the end
result is:

[acme@doppio net-2.6]$ l /tmp/sys_ia32.o.before /tmp/sys_ia32.o.after
-rw-rw-r-- 1 acme acme 185240 2008-02-06 19:19 /tmp/sys_ia32.o.after
-rw-rw-r-- 1 acme acme 248328 2008-02-06 19:00 /tmp/sys_ia32.o.before

Almost 64KB only on this object file!

There were no other side effects from this change:

[acme@doppio net-2.6]$ objcopy -j "text" /tmp/sys_ia32.o.before /tmp/text.before
[acme@doppio net-2.6]$ objcopy -j "text" /tmp/sys_ia32.o.after /tmp/text.after
[acme@doppio net-2.6]$ md5sum /tmp/text.before /tmp/text.after
b7ac9b17942add68494e698e4f965d36  /tmp/text.before
b7ac9b17942add68494e698e4f965d36  /tmp/text.after

One of the complaints about using tools such as systemtap is
that one has to install the huge kernel-debuginfo package:

[acme@doppio net-2.6]$ rpm -q --qf "%{size}\n" kernel-rt-debuginfo
471737710
543867594
[acme@doppio net-2.6]$

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: bump image header to version 2.08.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: add a crc32 checksum to the kernel image.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: use ELF format in compressed images.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: virtualization@lists.linux-foundation.org
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: define DEBUG_SIG in signal_64.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: Unify argument names in signal_32|64.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: move struct definitions to unifed sigframe.h

[ tglx@linutronix.de: cleanup the other structs as well ]

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: use sizeof(long) to unify signal_32|64.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: Use FIX_EFLAGS define in X86_64

[ tglx@linutronix.de: simplified ]

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: reduce trivial style differences in signal_32|64.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: regparm(3) is mandatory, no need to annotate

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: make X86_32 pt_regs members unsigned long

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: change most X86_32 pt_regs members to unsigned long

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: enable ACPI extended century handling for 32bit

The extended century readout does not solve the year 2038 problem on
32bit!

v2: Fix compilation on !ACPI, pointed out by tglx

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: add warning when RTC clock reports binary

We assume that the RTC clock is BCD, so print a warning if it claims
to be binary.

[ tglx@linutronix.de: changed to WARN_ON - we want to know that!
  If no one reports it we can remove the complete if (RTC_ALWAYS_BCD)
  magic, which has RTC_ALWAYS_BCD defined to 1 since Linux 1.0 ... ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: use year 2000 offset for cmos clock

We know it is already after 2000. Use the year 2000 offset for both 32
and 64 bit, which removes ifdefs and the 1970 magic.

[ tglx@linutronix.de: remove 1970 magic, replace bogus commit message ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: clean up find_e820_area(), 64-bit

Change size to unsigned long, becase caller and user all used unsigned long.
Also make bad_addr take an alignment parameter.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: do kernel direct mapping at boot using GB pages

The AMD Fam10h CPUs support new Gigabyte page table entry for
mapping 1GB at a time. Use this for the kernel direct mapping.

Only done for 64bit because i386 does not support GB page tables.

This only applies to the data portion of the direct mapping; the
kernel text mapping stays with 2MB pages because the AMD Fam10h
microarchitecture does not support GB ITLBs and AMD recommends
against using GB mappings for code.

Can be disabled with disable_gbpages on the kernel command line

[ tglx@linutronix.de: simplify enable code ]
[ Yinghai Lu <yinghai.lu@sun.com>: boot fix on 256 GB RAM ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: add gbpages switches

These new controls toggle experimental support for a new CPU feature,
the straightforward extension of largepages from the pmd level to the
pud level, which allows 1GB (kernel) TLBs instead of 2MB TLBs.

Turn it off by default, as this code has not been tested well enough yet.

Use the CONFIG_DIRECT_GBPAGES=y .config option or gbpages on the
boot line can be used to enable it. If enabled in the .config then
nogbpages boot option disables it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: clean up the page table dumper and add 32-bit support

Clean up the page table dumper (fix boundary conditions, table driven
address ranges, some formatting changes since it is no longer using
the kernel log but a separate virtual file), and generalize to 32
bits.

[ mingo@elte.hu: x86: fix the pagetable dumper ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: add code to dump the (kernel) page tables for visual inspection by kernel developers

This patch adds code to the kernel to have an (optional)
/proc/kernel_page_tables debug file that basically dumps the kernel
pagetables; this allows us kernel developers to verify that nothing fishy is
going on and that the various mappings are set up correctly. This was quite
useful in finding various change_page_attr() bugs, and is very likely to be
useful in the future as well.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: mingo@elte.hu
Cc: tglx@tglx.de
Cc: hpa@zytor.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: unify arch/x86/mm/Makefile

Unify arch/x86/mm/Makefile between 32 and 64 bits.

All configuration variables that are protected by Kconfig constraints
have been put in the common part of the Makefile; however, the NUMA
files are totally different between 32 and 64 bits and are handled via
an ifdef.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86: add debug info to DEBUG_PAGEALLOC

Add debug information for DEBUG_PAGEALLOC to get some statistics about
the pool usage and split status.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

x86 vDSO: don't map 32-bit vdso when disabled

We map a VMA for the 32-bit vDSO even when it's disabled, which is stupid.
For the 32-bit kernel it's the vdso_enabled boot parameter/sysctl
and for the 64-bit kernel it's the vdso32 boot parameter/syscall32 sysctl.

When it's disabled, we don't pass AT_SYSINFO_EHDR so processes don't use
the vDSO for anything, but we still map it.  For the non-compat vDSO,
this means we're always putting an extra VMA somewhere, maybe lousing
up the control of the address space the user was hoping for.

Honor the setting by doing nothing in arch_setup_additional_pages.

[ also see: "x86 vDSO: don't use disabled vDSO for signal trampoline" ]

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86 vDSO: don't use disabled vDSO for signal trampoline

If the vDSO was not mapped, don't use it as the "restorer" for a signal
handler.  Whether we have a pointer in mm->context.vdso depends on what
happened at exec time, so we shouldn't check any global flags now.

Background:

Currently, every 32-bit exec gets the vDSO mapped even if it's disabled
(the process just doesn't get told about it).  Because it's in fact
always there, the bug that this patch fixes cannot happen now.  With
the second patch, it won't be mapped at all when it's disabled, which is
one of the things that people might really want when they disable it (so
nothing they didn't ask for goes into their address space).

The 32-bit signal handler setup when SA_RESTORER is not used refers to
current->mm->context.vdso without regard to whether the vDSO has been
disabled when the process was exec'd.  This patch fixes this not to use
it when it's null, which becomes possible after the second patch. (This
never happens in normal use, because glibc's sigaction call uses
SA_RESTORER unless glibc detected the vDSO.)

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

x86: increase the kernel text limit to 512 MB

people sometimes do crazy stuff like building really large static
arrays into their kernels or building allyesconfig kernels. Give
more space to the kernel and push modules up a bit: kernel has
512 MB and modules have 1.5 GB.

Should be enough for a few years ;-)

Signed-off-by: Ingo Molnar <mingo@elte.hu>