Eric W. Biederman 5989cd6a1c x86, apic: Map the local apic when parsing the MP table. ... This fixes a regression in 2.6.35 from 2.6.34, that is present for select models of Intel cpus when people are using an MP table. The commit cf7500c0ea "x86, ioapic: In mpparse use mp_register_ioapic" started calling mp_register_ioapic from MP_ioapic_info. An extremely simple change that was obviously correct. Unfortunately mp_register_ioapic did just a little more than the previous hand crafted code and so we gained this call path. The problem call path is: MP_ioapic_info() mp_register_ioapic() io_apic_unique_id() io_apic_get_unique_id() get_physical_broadcast() modern_apic() lapic_get_version() apic_read(APIC_LVR) Which turned out to be a problem because the local apic was not mapped, at that point, unlike the similar point in the ACPI parsing code. This problem is fixed by mapping the local apic when parsing the mptable as soon as we reasonably can. Looking at the number of places we setup the fixmap for the local apic, I see some serious simplification opportunities. For the moment except for not duplicating the setting up of the fixmap in init_apic_mappings, I have not acted on them. The regression from 2.6.34 is tracked in bug https://bugzilla.kernel.org/show_bug.cgi?id=16173 Cc: <stable@kernel.org> 2.6.35 Reported-by: David Hill <hilld@binarystorm.net> Reported-by: Tvrtko Ursulin <tvrtko.ursulin@sophos.com> Tested-by: Tvrtko Ursulin <tvrtko.ursulin@sophos.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> LKML-Reference: <m1eiee86jg.fsf_-_@fess.ebiederm.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>		2010-08-05 16:26:42 -07:00
..
acpi	Merge branch 'bugzilla-16396' into release	2010-07-24 23:26:22 -04:00
apic	x86, apic: Map the local apic when parsing the MP table.	2010-08-05 16:26:42 -07:00
cpu	[CPUFREQ] powernow-k8: Limit Pstate transition latency check	2010-07-26 15:25:34 -04:00
.gitignore
alternative.c	Merge branch 'x86/asm' into x86/atomic	2010-04-29 16:53:17 -07:00
amd_iommu.c	x86/amd-iommu: Fall back to GART if initialization fails	2010-06-01 10:20:15 +02:00
amd_iommu_init.c	x86/amd-iommu: Fall back to GART if initialization fails	2010-06-01 10:20:15 +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
asm-offsets.c
asm-offsets_32.c
asm-offsets_64.c
audit_64.c
bios_uv.c
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	x86: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
crash.c	Revert "x86: disable IOMMUs on kernel crash"	2010-04-07 11:51:17 +02:00
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
doublefault_32.c
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
dumpstack_32.c
dumpstack_64.c	perf/x86-64: Use frame pointer to walk on irq and process stacks	2010-03-10 14:26:40 +01:00
e820.c	suspend: Move NVS save/restore code to generic suspend functionality	2010-06-10 11:02:34 -04:00
early-quirks.c	x86: Force HPET readback_cmp for all ATI chipsets	2010-07-15 17:10:02 +02:00
early_printk.c	earlyprintk,vga,kdb: Fix \b and \r for earlyprintk=vga with kdb	2010-05-20 21:04:31 -05:00
efi.c
efi_32.c
efi_64.c
efi_stub_32.S
efi_stub_64.S
entry_32.S	x86-32: Rework cache flush denied handler	2010-05-03 13:39:26 -07:00
entry_64.S	x86: auditsyscall: fix fastpath return value after reschedule	2010-07-21 17:44:12 -07:00
ftrace.c
head.c
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
head_64.S
hpet.c	x86: Do not try to disable hpet if it hasn't been initialized before	2010-07-23 12:53:00 +02:00
hw_breakpoint.c	hw-breakpoints: Change/Enforce some breakpoints policies	2010-05-01 04:32:10 +02:00
i386_ksyms_32.c
i387.c	x86: Introduce 'struct fpu' and related API	2010-05-10 10:48:55 -07:00
i8237.c
i8253.c
i8259.c	x86, i8259: Only register sysdev if we have a real 8259 PIC	2010-07-20 15:27:33 -07:00
init_task.c	Rename .data.cacheline_aligned to .data..cacheline_aligned.	2010-03-03 11:25:58 +01:00
io_delay.c
ioport.c
irq.c
irq_32.c
irq_64.c
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	x86: kprobes: fix swapped segment registers in kretprobe	2010-07-18 15:05:34 -07:00
kvm.c
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
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
microcode_core.c	driver core: add devname module aliases to allow module on-demand auto-loading	2010-05-25 15:08:26 -07:00
microcode_intel.c	x86: Improve Intel microcode loader performance	2010-03-11 13:49:06 +01:00
mmconf-fam10h_64.c
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, apic: Map the local apic when parsing the MP table.	2010-08-05 16:26:42 -07:00
mrst.c	x86, mrst: Add i8042_detect API for Moorestwon platform	2010-07-07 17:05:06 -07:00
msr.c	x86: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
olpc.c
paravirt-spinlocks.c
paravirt.c
paravirt_patch_32.c
paravirt_patch_64.c
pci-calgary_64.c	x86, Calgary: Limit the max PHB number to 256	2010-06-30 22:41:42 -07:00
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: remove unnecessary sync_single_range_* in swiotlb_dma_ops	2010-05-27 09:12:52 -07:00
pcspeaker.c
pmtimer_64.c
probe_roms_32.c
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
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
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: Force HPET readback_cmp for all ATI chipsets	2010-07-15 17:10:02 +02:00
reboot.c	x86: Fix rebooting on Dell Precision WorkStation T7400	2010-06-20 09:24:13 +02:00
reboot_fixups_32.c
relocate_kernel_32.S
relocate_kernel_64.S
rtc.c
scx200_32.c
setup.c	x86, setup: Phoenix BIOS fixup is needed on Dell Inspiron Mini 1012	2010-05-24 13:33:14 -07:00
setup_percpu.c	Fix up trivial spelling errors ('taht' -> 'that')	2010-07-21 09:25:42 -07:00
sfi.c	x86, irq: Rename gsi_end gsi_top, and fix off by one errors	2010-06-09 13:34:06 -07:00
signal.c
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, smpboot: Fix cores per node printing on boot	2010-06-02 09:38:53 +02:00
stacktrace.c
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
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.c
trampoline_32.S
trampoline_64.S
traps.c	x86: Send a SIGTRAP for user icebp traps	2010-06-30 16:16:20 +02:00
tsc.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
tsc_sync.c
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
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
vm86_32.c
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	Merge branch 'for-35' of git://repo.or.cz/linux-kbuild	2010-06-01 08:55:52 -07:00
vsmp_64.c
vsyscall_64.c
x86_init.c	x86: Add i8042 pre-detection hook to x86_platform_ops	2010-07-07 17:05:06 -07:00
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