Commit graph

20705 commits

Author SHA1 Message Date
Glauber de Oliveira Costa
7a636af664 x86: provide specialized identification routines for x86_64
provide two specialized identify_secondary_cpu() and identify_boot_cpu()
routines for x86_64. Although not strictly needed, they are functionally
correct, and will ease integration with i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
4f3ab1959a x86: decouple call to print_cpu_info from smp_store_cpu_info
This will ease integration with i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
82389871b8 x86: add an smp_apply_quirks to smpboot_32.c
The split of smp_store_cpu_info in a quirks-only part
will ease integration with x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
d0173aeac4 x86: use start_ipi_hook in x86_64
It is used to match i386. The definition for the non-paravirt
case is moved to smp.h instead of smp_32.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
1af8a0c1b3 x86: use apic_*_around instead of apic_write in x86_64
This patch replaces apic_read() for apic_read_around()
and apic_write for apic_write_around() in smpboot_64.c
We do it to have a common usage between x86_64 and i386.
In the former, it will always simply expand to apic_write

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
ba10485c2f x86: add loglevel to printks
Add loglevel facilities to printks in __inquire_remote_apic.
the levels are the ones to match x86_64 ones.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
26c6b5ea55 x86: change var types in __inquire_remote_apic
change some variables' types in __inquire_remote_apic to
match x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Pavel Machek
b552da8740 x86 iommu: add more documentation
Fix coding style in pci-dma_64.c and add stubs for documentation. I
hope someone fills the rest, I understand maybe off and soft...

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
037cab07e9 x86: move mp_bus_id_to_node to numa.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
e129cb490e x86: move mp_bus_id_to_local to numa.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
c0a282c251 x86: make mp_bus_id_to_type optional
[ mingo@elte.hu: fix boot regression. ]

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
9e0a2de268 x86: rearrange bus_type parse
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
643befed10 x86: use not_pci bitmap #6
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
9c0076cb34 x86: use not_pci bitmap #5
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
6728801dce x86: use not_pci bitmap #4
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
47cab822d6 x86: use not_pci bitmap #3
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
73b2961bfa x86: use not_pci bitmap #2
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
d27e2b8e2a x86: use not_pci bitmap #1
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
a6333c3ccb x86: add mp_bus_not_pci bitmap to mpparse_32.c
Signed-off: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Yinghai Lu
8643f9d02a x86: get boot_cpu_id as early for k8_scan_nodes
When acpi=off or there is no SRAT defined, apicid_to_node is got from K8
Northbridge PCI configuration space in k8_scan_nodes() in
arch/x86_64/mm/k8toplogy.c.

The problem is that it assumes bsp apic id is 0 at that point.

For four socket system with Quad core cpus installed, all cpus apic id
is offset by 4, and bsp apic id is 4.

For eight socket system with dual core cpus installed, all cpus apic id
is offset by 2, and bsp apic id is 2.

We need get boot_cpu_id --- bsp apic id, before k8_scan_nodes by called.

So create early_acpi_boot_init and early_get_smp_config for get boot_cpu_id.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
6079d2d5d1 x86: move quad_local_to_mp_bus_id to numa.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Johannes Weiner
1415d160c7 x86: Remove redundant display of free swap space in show_mem()
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Jan Beulich
5b0e508415 x86: prevent unconditional writes to DebugCtl MSR
Otherwise, enabling (or better, subsequent disabling) of single
stepping would cause a kernel oops on CPUs not having this MSR.

The patch could have been added a conditional to the MSR write in
user_disable_single_step(), but centralizing the updates seems safer
and (looking forward) better manageable.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Markus Metzger <markus.t.metzger@intel.com>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Gautham R Shenoy
f694010185 x86: Don't send RESCHEDULE_VECTOR to offlined cpus
In the x86 native_smp_send_reschedule_function(), don't send the IPI if the
cpu has gone offline already. Warn nevertheless!!

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Joe Perches
e40c0fe6b0 x86: cleanup duplicate includes
Signed-off-by: Joe Perches <joe@perches.com>

 arch/x86/kernel/reboot.c      |    1 -
 include/asm-x86/elf.h         |    5 ++---
 include/asm-x86/posix_types.h |    8 +-------
 include/asm-x86/processor.h   |    3 +--
 include/asm-x86/unistd.h      |    8 +-------
 5 files changed, 5 insertions(+), 20 deletions(-)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Paolo Ciarrocchi
537d916066 x86: coding style fixes to arch/x86/kernel/setup_32.c
Fix:

  ERROR: do not initialise externals to 0 or NULL

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Yinghai Lu
9a79cf9c1a x86: sort address_markers for dump_pagetables
otherwise Vmemmap and High Kernel Mapping string is not showing up.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Yinghai Lu
01aaea1afb x86: introduce initial apicid
store initial_apicid from early identify. it is could be different from
phys_proc_id later.

also print it out in /proc/cpuinfo.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Mathieu Desnoyers
4e4eee0e01 x86: enhance DEBUG_RODATA support for hotplug and kprobes
Standardize DEBUG_RODATA, removing special cases for hotplug and kprobes.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: pageexec@freemail.hu
Cc: akpm@linux-foundation.org
CC: Andi Kleen <andi@firstfloor.org>
CC: pageexec@freemail.hu
CC: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:58 +02:00
Mathieu Desnoyers
e587cadd8f x86: enhance DEBUG_RODATA support - alternatives
Fix a memcpy that should be a text_poke (in apply_alternatives).

Use kernel_wp_save/kernel_wp_restore in text_poke to support DEBUG_RODATA
correctly and so the CPU HOTPLUG special case can be removed.

Add text_poke_early, for alternatives and paravirt boot-time and module load
time patching.

Changelog:

- Fix text_set and text_poke alignment check (mixed up bitwise and and or)
- Remove text_set
- Export add_nops, so it can be used by others.
- Document text_poke_early.
- Remove clflush, since it breaks some VIA architectures and is not strictly
  necessary.
- Add kerneldoc to text_poke and text_poke_early.
- Create a second vmap instead of using the WP bit to support Xen and VMI.
- Move local_irq disable within text_poke and text_poke_early to be able to
  be sleepable in these functions.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Andi Kleen <andi@firstfloor.org>
CC: pageexec@freemail.hu
CC: H. Peter Anvin <hpa@zytor.com>
CC: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Harvey Harrison
77bf90ed66 x86: replace remaining __FUNCTION__ occurances
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Yinghai Lu
282bfe21cf x86: show apicid for cpu in proc
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Yinghai Lu
a706221186 x86: fix amd_detect_cmp
for system with apicid lifting, boot cpu apicid will be 4

got:

  CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
  CPU: L2 Cache: 512K (64 bytes/line)
  CPU 0/4 -> Node 0
  CPU: Physical Processor ID: 1
  CPU: Processor Core ID: 0

so try to offset apicid back before get phys_proc_id with bits shift.
then we can get correct socket ID

also remove remove cpu_data(0) reference.

because cpu_data(0) only be ready after smp_prepare_cpus with the assignment
from boot_cpu_data to current_cpu_data aka cpu_data(0).

and check_bugs()==>identify_cpu(&boot_cpu_data) is quite before than
smp_prepare_cpus. So just use boot_cpu_id instead.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
97b44ae6cd x86: add KERN_INFO to show_unhandled_signals printout
Before:
   total: 0 errors, 1 warnings, 678 lines checked
After:
   total: 0 errors, 0 warnings, 678 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5336	      0	      4	   5340	   14dc	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
eee6dd1572 x86: move extern declaration to vdso.h
Before:
   total: 0 errors, 3 warnings, 685 lines checked
After:
   total: 0 errors, 1 warnings, 678 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5333	      0	      4	   5337	   14d9	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
7e907f4898 x86: clean up arch/x86/kernel/signal_32.c
Before:
   total: 21 errors, 6 warnings, 665 lines checked
After:
   total: 0 errors, 3 warnings, 685 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5333	      0	      4	   5337	   14d9	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
a711317021 x86: remove DEBUG_SIG
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Joe Perches
c1db29dbc7 x86: arch/x86/kernel/cpu/feature_names.c - use angle brackets for include
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
f668964ea1 x86: clean up i387.c
minor coding style cleanups.

Before:
   total: 0 errors, 3 warnings, 479 lines checked
After:
   total: 0 errors, 1 warnings, 483 lines checked

No code changed:

arch/x86/kernel/i387.o:

   text	   data	    bss	    dec	    hex	filename
   2379	      4	      8	   2391	    957	i387.o.before
   2379	      4	      8	   2391	    957	i387.o.after

md5:
   e1434553a3b4ff1f52ad97a68b1fad8a  i387.o.before.asm
   e1434553a3b4ff1f52ad97a68b1fad8a  i387.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
e104383fbf x86: use cpu_relax instead of rep_nop
This is done for smpboot_32.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
e90009bcc1 x86: use wait_for_init_deassert in x86_64
wraps the busy loop for wait_for_init_deasserted() in a function,
so smp_callin in x86_64 looks like more i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
91718e8d13 x86: unify setup_trampoline
setup_trampoline() looks very similar between architectures, and this
patch unifies them. The i386 version allocates bootmem memory, while
the x86_64 version uses a fixed address.

In this patch, we initialize the global trampoline_base to the x86_64 version,
and i386 allocation can later override it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
da522b0729 x86: adapt voyager's setup_trampoline
make setup_trampoline non-static. This way, it won't conflict
with the extern declaration in smp.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
d507897b2f x86: adapt voyager's trampoline_base
Change voyager's trampoline base to unsigned char *
instead of u32. This way, it won't conflict with
the other architectures when including smp.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
4206882939 x86: move trampoline arrays extern definition to smp.h
In here, they can serve both architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
89b08200ad x86: make x86_64 accept the max_cpus parameter
The parameter passing parsing is done in the common smpboot.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
69c18c15d3 x86: merge __cpu_disable and cpu_die
They are now equal, and are moved to a common file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
e9a6cb96fa x86: do not clear cpu_online_map
it was already cleared two lines above, and so, this removal
is bogus

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
045f9d2202 x86: use remove_from_maps in cpu_disable
it is already used in x86_64. In i386, it only
removes from cpu_online_map

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
fc25da9ec6 x86: remove vector_lock around cpu_online_map
This lock does not protect cpu_online_map, so its
length can be shortened, and in some cases, removed.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
70708a18e8 x86: move cpu_coregroup_map to common file
it is equal between architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
768d95051b x86: move sibling functions to common file
set_cpu_sibling_map() and remove_sibling_info() are
equal between architectures, and are now moved to common
file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
61d5989973 x86: make remove_siblinginfo non-static
this is done to match i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
1452207689 x86: make set_cpu_sibling_map nonstatic
And move its extern definition to smp.h, the common header

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
a355352b97 x86: move equal types to common file
move definitions that are now equal in type from
smpboot_{32,64}.c to smpboot.c

cpu_callin_map is put temporarily in smp_64.h (already
exists in smp_32.h), and will soon be merged.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
5382e89670 x86: adjust types in smpcommon_32.c
so they can have the same type as x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
0941ecb55f x86: get rid of smp_32.c and smp_64.c
This patch merges the copyright notices, and valuable
comments that were left back on smp_{32,64}.c. With that,
files are empty, and are deleted

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
c048fdfe61 x86: create tlb files
this patch creates tlb_32.c and tlb_64.c, with
tlb-related functions that used to live in smp*.c files.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
8202350367 x86: create ipi.c
This patch moves all ipi and apic related functions
from smp_32.c to ipi.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
f9e47a126b x86: create smp.c
this patch moves all the functions and data structures that look
like exactly the same from smp_{32,64}.c to smp.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
377d698426 x86: unify smp_send_stop
function definition is moved to common header.
x86_64 version is now called native_smp_send_stop

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
321183c145 x86: add reboot_force test to native_smp_send_stop
This can be safely added to i386. After that,
functions look exactly the same for both arches

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3be5b49e8f x86: make stop_this_cpu looks exactly equal in both arches
with the hlt_works change, it is possible to have i386
and x86_64 stop_this_cpu() looking exactly the same. They
can, after that, be merged.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
2513926c28 x86: change x86_64 smp_call_function_mask to look alike i386
the two versions (the inner version, and the outer version, that takes
the locks) of smp_call_function_mask are made into one. With the changes,
i386 and x86_64 versions look exactly the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3a36d1e435 x86: provide __smp_call_function
This function is used in smp_send_stop(). It's like
smp_call_function_mask, but always go to all online cpus,
and does not take any locks.

It is added to x86_64, but will soon be unified in a common file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
e32640a2cd x86: create smpcommon.c
This patch creates smpcommon.c with functions that are
equal between architectures. The i386-only init_gdt
is ifdef'd.

Note that smpcommon.o figures twice in the Makefile:
this is because sub-architectures like voyager that does
not use the normal smp_$(BITS) files also have to access them

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3428f3d6ca x86: remove irqs disabled warning.
there's already a warning in the topmost function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
7930e53422 x86: remove export for smp_call_function_mask.
with this removal, exports for both i386 and x86_64,
regarding the "smp_call_function" series are now the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:54 +02:00
Glauber Costa
68a1c3f8cd x86: move prefill_possible_map to common file
this patches moves prefill_possible_map() to smpboot.c
Right now it is x86_64-specific, but nothing intrinsically
prevents it to be used by i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
7b1292e237 x86: use disabled_cpus in i386
this patch allows a cpu to be marked as present but disabled in i386,
just as x86_64 currently does.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
c559764923 x86: unify smp_cpus_done
definition is moved to common header. x86_64 version is now called
native_smp_cpus_done

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
7557da6720 x86: unify smp_prepare_cpus
definition is moved to common header. x86_64 version is now called
native_smp_prepare_cpus

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
1e3fac83da x86: unify prepare_boot_cpu
definition is moved to common header. x86_64 version is now called
native_prepare_boot_cpu

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
71d195492a x86: unify __cpu_up.
function definition is moved to common header. x86_64 version
is now called native_cpu_up

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
64b1a21e09 x86: unify smp_call_function_mask
definition is moved to common header, x86_64 function name
now is native_smp_call_function_mask

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
8678969e60 x86: merge smp_send_reschedule
function definition is moved to common header, x86_64 version is now called
native_smp_send_reschedule

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
c76cb36846 x86: move smp_ops extern declaration to common header
the smp_ops symbol is temporarily defined in smp_64.c, but it will soon
be unified

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Alexander van Heukelum
ecd94c0809 x86: reserve end-of-conventional-memory to 1MB, 64-bit, use paravirt_enabled
Jeremy Fitzhardinge pointed out that looking at the boot_params
struct to determine if the system is running in a paravirtual
environment is not reliable for the Xen case, currently. He also
points out that there already exists a function to determine if
the system is running in a paravirtual environment. So let's use
that instead. This gets rid of the preprocessor test too.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
2fde61fdb0 x86: reserve end-of-conventional-memory to 1MB, 32-bit, use paravirt_enabled
Jeremy Fitzhardinge pointed out that looking at the boot_params
struct to determine if the system is running in a paravirtual
environment is not reliable for the Xen case, currently. He also
points out that there already exists a function to determine if
the system is running in a paravirtual environment. So let's use
that instead. This gets rid of the preprocessor test too.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Rusty Russell
3c2047cd32 x86: if we cannot calibrate the TSC, we panic.
The current tsc_init() clears the TSC feature bit if the TSC khz
cannot be calculated, causing us to panic in
arch/x86/kernel/cpu/bugs.c check_config().  We should simply mark it
unstable.

Frankly, someone should take an axe to this code.  mark_tsc_unstable()
not only marks it unstable, but sets tsc_enabled to 0, which seems
redundant but is actually important here because means it won't be
used by sched_clock() either.  Perhaps a tristate enum "UNUSABLE,
UNSTABLE, OK" would be clearer, and separate mark_tsc_unstable() and
mark_tsc_broken() functions?

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Ingo Molnar
9fc34113f6 x86: debug pmd_bad()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Ingo Molnar
ba748d221e x86: warn about RAM pages in ioremap()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
320a6b2efc x86: reserve end-of-conventional-memory to 1MB, 64-bit
This patch is an add-on to the 64-bit ebda patch. It makes
the functions reserve_ebda_region (renamed from reserve_ebda)
and copy_e820_map equal to the 32-bit versions of the previous
patch.

Changes:

Use u64 and u32 for local variables in copy_e820_map.

The amount of conventional memory and the start of the EBDA are
detected by reading the BIOS data area directly. Paravirtual
environments do not provide this area, so we bail out early
in that case. They will just have to set up a correct memory
map to start with.

Add a safety net for zeroed out BIOS data area.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
f6eb62b692 x86: reserve_early end-of-conventional-memory to 1MB, 64-bit
Explicitly reserve_early the whole address range from the end of
conventional memory as reported by the bios data area up to the
1Mb mark. Regard the info retrieved from the BIOS data area with
a bit of paranoia, though, because some biosses forget to register
the EBDA correctly.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
dedd04be71 x86: reserve end-of-conventional-memory to 1MB on 32-bit
This patch adds explicit detection of the EBDA and reservation
of the rom and adapter address space 0xa0000-0x100000 to the
i386 kernels. Before this patch, the EBDA size was hardcoded
as 4Kb. Also, the reservation of the adapter range was done by
modifying the e820 map which is now not necessary any longer,
and that code is removed from copy_e820_map.

The amount of conventional memory and the start of the EBDA are
detected by reading the BIOS data area directly. Paravirtual
environments do not provide this area, so we bail out early
in that case. They will just have to set up a correct memory
map to start with.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Roman Zippel
823c248e7c x86: fix recursive dependencies
The proper dependency check uncovered a few dependency problems,
the subarchitecture used a mixture of selects and depends on SMP
and PCI dependency was messed up.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Jeremy Fitzhardinge
81e103f1f1 xen: use iret instruction all the time
Change iret implementation to not be dependent on direct-access vcpu
structure.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Paolo Ciarrocchi
c9cf39ae64 x86: coding style fixes to x86/kernel/early_printk.c
Depends on:
[PATCH 2/3] x86: coding style fixes to arch/x86/kernel/early_printk.c

Remove two:
ERROR: do not initialise statics to 0 or NULL

paolo@paolo-desktop:/tmp/c$ size *
   text    data     bss     dec     hex filename
   1172     280      12    1464     5b8 early_printk.o.after
   1172     280      12    1464     5b8 early_printk.o.before

This patch is changing the binary output:

paolo@paolo-desktop:/tmp/c$ md5sum *
dad9a9a881e0eeda62cc5645bd3d7cad  early_printk.o.after
da32f5cd8f248970e4809e1005393e95  early_printk.o.before

because the two variables moved to another section. No
change in functionality.

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Paolo Ciarrocchi
e941f27a7a x86: coding style fixes to arch/x86/kernel/early_printk.c
Before:
total: 17 errors, 3 warnings, 254 lines checked

After:
total: 2 errors, 3 warnings, 254 lines checked

paolo@paolo-desktop:/tmp/b$ md5sum *
da32f5cd8f248970e4809e1005393e95  early_printk.o.after
da32f5cd8f248970e4809e1005393e95  early_printk.o.before

paolo@paolo-desktop:/tmp/b$ size *
   text    data     bss     dec     hex filename
   1172     280      12    1464     5b8 early_printk.o.after
   1172     280      12    1464     5b8 early_printk.o.befor

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Paolo Ciarrocchi
3f50dbc1ae x86: coding style fixes to arch/x86/lib/usercopy_32.c
Before:
 total: 63 errors, 2 warnings, 878 lines checked
After:
 total: 0 errors, 2 warnings, 878 lines checked

Compile tested, no change in the binary output:

text    data     bss     dec     hex filename
3231       0       0    3231     c9f usercopy_32.o.after
3231       0       0    3231     c9f usercopy_32.o.before

md5sum:
9f9a3eb43970359ae7cecfd1c9e7cf42  usercopy_32.o.after
9f9a3eb43970359ae7cecfd1c9e7cf42  usercopy_32.o.before

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
bdd3cee2e4 x86: ioremap(), extend check to all RAM pages
Suggested by Jan Beulich.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jan Beulich <jbeulich@novell.com>
2008-04-17 17:40:51 +02:00
Hiroshi Shimamoto
b089c12b25 x86: X86_HT always enable on X86_64 SMP
X86_HT is used for hyperthreading or multicore on 32-bit.
The X86_HT on 64-bit is different from 32-bit, it means hyperthreading only.
And X86_HT is not used on 64-bit except from cpu/initel_cacheinfo.c.

Unify X86_HT for hyperthreading or multicore.
Turn X86_HT on when X86_64 and SMP are enabled.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Thomas Gleixner
e3100c82ab x86: check physical address range in ioremap
Roland Dreier reported in http://lkml.org/lkml/2008/2/27/194

[ 8425.915139] BUG: unable to handle kernel paging request at ffffc20001a0a000
[ 8425.919087] IP: [<ffffffff8021dacc>] clflush_cache_range+0xc/0x25
[ 8425.919087] PGD 1bf80e067 PUD 1bf80f067 PMD 1bb497067 PTE 80000047000ee17b

This is on a Intel machine with 36bit physical address space. The PTE
entry references 47000ee000, which is outside of it.

Add a check for the physical address space and warn/printk about the
stupid caller.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Markus Armbruster
b8c2d3dfbc xen: make hvc0 the preferred console in domU
This makes the Xen console just work.  Before, you had to ask for it
on the kernel command line with console=hvc0

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Alexey Dobriyan
11ae9dd481 x86: switch to proc_create()
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
b5964405fb x86: clean up traps_32.c
Before:
   total: 86 errors, 29 warnings, 1248 lines checked
After:
   total: 0 errors, 17 warnings, 1281 lines checked

No code changed:

arch/x86/kernel/traps_32.o:

   text	   data	    bss	    dec	    hex	filename
   8711	   2168	     72	  10951	   2ac7	traps_32.o.before
   8711	   2168	     72	  10951	   2ac7	traps_32.o.after

(md5 sums differ because some stack offset positions changed.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
10cd5a1e54 x86: clean up cpu capabilities accesses, transmeta.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
d0e95ebdc5 x86: clean up cpu capabilities in arch/x86/kernel/cpu/intel.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
1d007cd5ae x86: clean up cpu capabilities accesses, cyrix.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
4cbe668add x86: clean up cpu capabilities accesses, common.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00