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

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

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

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

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

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

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

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

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: NIngo Molnar <mingo@elte.hu>

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

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

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

basic style cleanup to flush out years of neglect:

 - consistent indentation
 - whitespace fixes
 - consistent comments
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Now cpu/proc.c and cpu/proc_64.c are same.
So cpu/proc_64.c can be removed.
Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

make cpu/proc.c and cpu/proc_64.c same.
Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

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

clean up for unification.
Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

x86 /proc/cpuinfo code can be unified.
This is the first step of unification.
Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

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

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

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

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

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

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

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

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

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

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

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

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

Also update field names to simply payload_{offset,length} so as to not rule
out uncompressed images.
Signed-off-by: NIan 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: NIngo Molnar <mingo@elte.hu>

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

> 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: NIan 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: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

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

Kills more than 150 errors/warnings
Signed-off-by: NPaolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

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

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: NDavid P. Reed <dpreed@reed.com>
Acked-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

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

Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NRavikiran Thirumalai <kiran@scalemp.com>
Acked-by: NShai Fultheim <shai@scalemp.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NRavikiran Thirumalai <kiran@scalemp.com>
Acked-by: NShai Fultheim <shai@scalemp.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>