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linux/arch/x86/kernel
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Jan Beulich 5f2eb55026 x86: "nosmp" command line option should force the system into UP mode 
Bits set in cpu_possible_mask prior to the execution of
prefill_possible_map() (i.e.  when parsing ACPI or MPS tables) would
prevent the SMP alternatives logic from switching to UP mode, plus
unnecessary setup of per-CPU data for CPUs that can never come online.

Additionally, without CONFIG_HOTPLUG_CPU disabled CPUs can never come
online, and hence setting cpu_possible_mask bits for them is again a
simple waste of resources.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <201005241913.o4OJDH3Z010874@imap1.linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2010-05-24 13:31:52 -07:00
..
acpi
Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2010-05-20 09:45:38 -07:00
apic
x86, apic: ack all pending irqs when crashed/on kexec
2010-05-24 13:31:35 -07:00
cpu
x86,early dr regs,kgdb: Allow kernel debugger early dr register access
2010-05-20 21:04:30 -05:00
.gitignore
…
alternative.c
Merge branch 'x86/asm' into x86/atomic
2010-04-29 16:53:17 -07:00
amd_iommu_init.c
x86/amd-iommu: Add amd_iommu=off command line option
2010-05-11 17:12:33 +02:00
amd_iommu.c
Merge branch 'iommu/largepages' into amd-iommu/2.6.35
2010-05-11 17:40:57 +02:00
apb_timer.c
x86, mrst: Conditionally register cpu hotplug notifier for apbt
2010-04-20 14:38:28 -07:00
aperture_64.c
x86/gart: Disable GART explicitly before initialization
2010-04-07 14:36:30 +02:00
apm_32.c
i8253: Convert i8253_lock to raw_spinlock
2010-03-02 10:28:38 +01:00
asm-offsets_32.c
lguest: optimize by coding restore_flags and irq_enable in assembler.
2009-06-12 22:27:03 +09:30
asm-offsets_64.c
tracing: Define NR_syscalls for x86_64
2009-08-26 21:29:58 +02:00
asm-offsets.c
…
audit_64.c
…
bios_uv.c
Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-02-28 11:00:55 -08:00
bootflag.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
check.c
…
cpuid.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
crash_dump_32.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
crash_dump_64.c
…
crash.c
Revert "x86: disable IOMMUs on kernel crash"
2010-04-07 11:51:17 +02:00
doublefault_32.c
x86: Use get_desc_base()
2009-07-19 18:27:51 +02:00
dumpstack_32.c
perf: Drop useless check for ignored frame
2010-01-13 10:09:08 +01:00
dumpstack_64.c
perf/x86-64: Use frame pointer to walk on irq and process stacks
2010-03-10 14:26:40 +01:00
dumpstack.c
x86, perf, bts, mm: Delete the never used BTS-ptrace code
2010-03-26 11:33:55 +01:00
dumpstack.h
perf: Fix unsafe frame rewinding with hot regs fetching
2010-04-08 19:03:28 +02:00
e820.c
x86: Make e820_remove_range to handle all covered case
2010-03-31 17:40:57 -07:00
early_printk.c
earlyprintk,vga,kdb: Fix \b and \r for earlyprintk=vga with kdb
2010-05-20 21:04:31 -05:00
early-quirks.c
…
efi_32.c
…
efi_64.c
x86: Make 64-bit efi_ioremap use ioremap on MMIO regions
2009-08-03 13:34:25 -07:00
efi_stub_32.S
…
efi_stub_64.S
…
efi.c
x86: Remove trailing spaces in messages
2010-02-07 17:47:51 +01:00
entry_32.S
x86-32: Rework cache flush denied handler
2010-05-03 13:39:26 -07:00
entry_64.S
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-12-16 12:02:37 -08:00
ftrace.c
Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core
2010-02-27 10:06:10 +01:00
head32.c
x86: Make sure free_init_pages() frees pages on page boundary
2010-03-29 18:55:33 +02:00
head64.c
x86: Make sure free_init_pages() frees pages on page boundary
2010-03-29 18:55:33 +02:00
head_32.S
Merge branch 'master' into percpu
2010-01-05 09:17:33 +09:00
head_64.S
tree-wide: Assorted spelling fixes
2010-02-09 11:13:56 +01:00
head.c
…
hpet.c
x86, hpet: Restrict read back to affected ATI chipsets
2010-04-28 18:14:29 -07:00
hw_breakpoint.c
hw-breakpoints: Change/Enforce some breakpoints policies
2010-05-01 04:32:10 +02:00
i386_ksyms_32.c
x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
2009-10-01 08:42:24 +02:00
i387.c
x86: Introduce 'struct fpu' and related API
2010-05-10 10:48:55 -07:00
i8237.c
…
i8253.c
i8253: Convert i8253_lock to raw_spinlock
2010-03-02 10:28:38 +01:00
i8259.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
init_task.c
Use new __init_task_data macro in arch init_task.c files.
2009-09-21 06:27:08 +02:00
io_delay.c
…
ioport.c
x86-64, paravirt: Call set_iopl_mask() on 64 bits
2009-12-09 16:54:08 -08:00
irq_32.c
x86: Unify fixup_irqs() for 32-bit and 64-bit kernels
2009-11-02 15:56:34 +01:00
irq_64.c
x86: Unify fixup_irqs() for 32-bit and 64-bit kernels
2009-11-02 15:56:34 +01:00
irq.c
genirq: Convert irq_desc.lock to raw_spinlock
2009-12-14 23:55:33 +01:00
irqinit.c
x86: Merge simd_math_error() into math_error()
2010-05-03 13:39:29 -07:00
k8.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
kdebugfs.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
kgdb.c
x86,kgdb: Implement early hardware breakpoint debugging
2010-05-20 21:04:30 -05:00
kprobes.c
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 08:19:03 -07:00
kvm.c
KVM guest: do not batch pte updates from interrupt context
2009-09-10 18:10:50 +03:00
kvmclock.c
x86, paravirt: don't compute pvclock adjustments if we trust the tsc
2010-05-19 11:41:05 +03:00
ldt.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
machine_kexec_32.c
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-12-08 13:27:33 -08:00
machine_kexec_64.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
Makefile
x86, perf, bts, mm: Delete the never used BTS-ptrace code
2010-03-26 11:33:55 +01:00
mca_32.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
microcode_amd.c
Revert "x86: ucode-amd: Load ucode-patches once ..."
2010-01-23 06:21:59 +01:00
microcode_core.c
x86/microcode: Use nonseekable_open()
2010-04-14 12:27:34 +02:00
microcode_intel.c
x86: Improve Intel microcode loader performance
2010-03-11 13:49:06 +01:00
mmconf-fam10h_64.c
x86: Move range related operation to one file
2010-02-10 17:47:17 -08:00
module.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
mpparse.c
x86, ioapic: In mpparse use mp_register_ioapic
2010-05-04 13:34:59 -07:00
mrst.c
x86, mrst: add nop functions to x86_init mpparse functions
2010-05-16 22:47:41 -07:00
msr.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
olpc.c
x86, olpc: Use pci subarch init for OLPC
2010-02-25 19:26:23 -08:00
paravirt_patch_32.c
…
paravirt_patch_64.c
…
paravirt-spinlocks.c
locking: Convert __raw_spin* functions to arch_spin*
2009-12-14 23:55:32 +01:00
paravirt.c
x86, paravirt: Remove kmap_atomic_pte paravirt op.
2010-02-27 14:41:35 -08:00
pci-calgary_64.c
tree-wide: Assorted spelling fixes
2010-02-09 11:13:56 +01:00
pci-dma.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
pci-gart_64.c
Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2010-04-13 13:24:54 +02:00
pci-nommu.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
pci-swiotlb.c
x86: Split swiotlb initialization into two stages
2009-12-15 13:01:57 +01:00
pcspeaker.c
…
pmtimer_64.c
…
probe_roms_32.c
…
process_32.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 08:58:16 -07:00
process_64.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 08:58:16 -07:00
process.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 08:58:16 -07:00
ptrace.c
hw-breakpoints: Tag ptrace breakpoint as exclude_kernel
2010-05-01 04:32:07 +02:00
pvclock.c
x86, paravirt: don't compute pvclock adjustments if we trust the tsc
2010-05-19 11:41:05 +03:00
quirks.c
x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk
2010-05-17 10:04:43 -07:00
reboot_fixups_32.c
cs5535: move the DIVIL MSR definition into linux/cs5535.h
2009-12-15 08:53:28 -08:00
reboot.c
x86: Add iMac9,1 to pci_reboot_dmi_table
2010-02-17 08:08:21 +01:00
relocate_kernel_32.S
…
relocate_kernel_64.S
…
rtc.c
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-09-18 14:05:47 -07:00
scx200_32.c
…
setup_percpu.c
early_res: Add free_early_partial()
2010-02-26 08:25:35 +01:00
setup.c
x86, kgdb: early trap init for early debug
2010-05-20 21:04:29 -05:00
sfi.c
x86, ioapic: Teach mp_register_ioapic to compute a global gsi_end
2010-05-04 13:34:56 -07:00
signal.c
x86: Merge sys_sigaltstack
2009-12-09 16:28:59 -08:00
smp.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
smpboot.c
x86: "nosmp" command line option should force the system into UP mode
2010-05-24 13:31:52 -07:00
stacktrace.c
perf events, x86/stacktrace: Make stack walking optional
2009-12-17 09:56:19 +01:00
step.c
x86, ptrace: Fix block-step
2010-03-26 11:33:57 +01:00
sys_i386_32.c
Add generic sys_olduname()
2010-03-12 15:52:32 -08:00
sys_x86_64.c
improve sys_newuname() for compat architectures
2010-03-12 15:52:32 -08:00
syscall_64.c
…
syscall_table_32.S
Add generic sys_old_mmap()
2010-03-12 15:52:32 -08:00
tboot.c
Merge branch 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2010-05-21 17:16:21 -07:00
tce_64.c
…
test_nx.c
…
test_rodata.c
…
time.c
x86: Convert i8259_lock to raw_spinlock
2010-02-16 18:21:32 +01:00
tlb_uv.c
Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 09:46:35 -07:00
tls.c
…
tls.h
…
topology.c
…
trampoline_32.S
x86: cpuinit-annotate SMP boot trampolines properly
2009-09-20 20:23:37 +02:00
trampoline_64.S
x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
2009-10-12 18:06:48 +02:00
trampoline.c
x86: Use find_e820() instead of hard coded trampoline address
2009-12-11 09:28:22 +01:00
traps.c
x86, kgdb: early trap init for early debug
2010-05-20 21:04:29 -05:00
tsc_sync.c
locking: Convert __raw_spin* functions to arch_spin*
2009-12-14 23:55:32 +01:00
tsc.c
Merge branch 'for-next' into for-linus
2010-03-08 16:55:37 +01:00
uv_irq.c
Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 09:46:35 -07:00
uv_sysfs.c
x86: Remove trailing spaces in messages
2010-02-07 17:47:51 +01:00
uv_time.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
verify_cpu_64.S
…
visws_quirks.c
Merge remote branch 'origin/x86/apic' into x86/mrst
2010-02-22 16:25:18 -08:00
vm86_32.c
x86, 32-bit: Convert sys_vm86 & sys_vm86old
2009-12-09 16:29:23 -08:00
vmi_32.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
vmiclock_32.c
Merge branch 'for-next' into for-linus
2010-03-08 16:55:37 +01:00
vmlinux.lds.S
x86: Make smp_locks end with page alignment
2010-03-29 18:42:30 +02:00
vsmp_64.c
…
vsyscall_64.c
x86: Raise vsyscall priority on hotplug notifier chain
2010-03-01 12:35:40 -03:00
x86_init.c
Merge branch 'x86-mrst-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-03-07 15:59:39 -08:00
x8664_ksyms_64.c
x86-64: Don't export init_level4_pgt
2010-04-28 17:25:47 -07:00
xsave.c
x86: Introduce 'struct fpu' and related API
2010-05-10 10:48:55 -07:00