Baoquan He bee3204ec3 x86/apic: Set up through-local-APIC mode on the boot CPU if 'noapic' specified ... Currently the kdump kernel becomes very slow if 'noapic' is specified. Normal kernel doesn't have this bug. Kernel parameter 'noapic' is used to disable IO-APIC in system for testing or special purpose. Here the root cause is that in kdump kernel LAPIC is disabled since commit: 522e664644 ("x86/apic: Disable I/O APIC before shutdown of the local APIC") In this case we need set up through-local-APIC on boot CPU in setup_local_APIC(). In normal kernel the legacy irq mode is enabled by the BIOS. If it is virtual wire mode, the local-APIC has been enabled and set as through-local-APIC. Though we fixed the regression introduced by commit 522e664644, to further improve robustness set up the through-local-APIC mode explicitly, do not rely on the default boot IRQ mode. Signed-off-by: Baoquan He <bhe@redhat.com> Reviewed-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: douly.fnst@cn.fujitsu.com Cc: joro@8bytes.org Cc: prarit@redhat.com Cc: uobergfe@redhat.com Link: http://lkml.kernel.org/r/20180214054656.3780-7-bhe@redhat.com [ Rewrote the changelog. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-02-17 11:47:46 +01:00
..
acpi	ACPI: SPCR: Make SPCR available to x86	2018-02-07 11:39:58 +01:00
apic	x86/apic: Set up through-local-APIC mode on the boot CPU if 'noapic' specified	2018-02-17 11:47:46 +01:00
cpu	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
fpu
kprobes	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-21 10:48:35 -08:00
.gitignore
alternative.c	x86/paravirt: Remove 'noreplace-paravirt' cmdline option	2018-01-31 10:37:45 +01:00
amd_gart_64.c	dma-mapping: move swiotlb arch helpers to a new header	2018-01-10 16:40:54 +01:00
amd_nb.c
apb_timer.c
aperture_64.c	x86/gart: Exclude GART aperture from vmcore	2018-01-11 15:09:24 +01:00
apm_32.c	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
asm-offsets_32.c
asm-offsets_64.c
asm-offsets.c	x86/mm: Use/Fix PCID to optimize user/kernel switches	2017-12-23 21:13:00 +01:00
audit_64.c
bootflag.c
check.c
cpuid.c
crash_dump_32.c
crash_dump_64.c
crash.c	x86/apic: Fix restoring boot IRQ mode in reboot and kexec/kdump	2018-02-17 11:47:45 +01:00
devicetree.c	x86: remove arch specific early_init_dt_alloc_memory_arch	2018-01-30 11:17:37 -06:00
doublefault.c
dumpstack_32.c
dumpstack_64.c
dumpstack.c	x86/dumpstack: Avoid uninitlized variable	2018-02-02 23:33:50 +01:00
e820.c
early_printk.c
early-quirks.c
ebda.c
eisa.c
espfix_64.c
ftrace_32.S	x86/retpoline/ftrace: Convert ftrace assembler indirect jumps	2018-01-12 00:14:30 +01:00
ftrace_64.S	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-28 12:19:23 -08:00
ftrace.c
head32.c
head64.c	x86/mm: Encrypt the initrd earlier for BSP microcode update	2018-01-16 01:50:59 +01:00
head_32.S
head_64.S	x86/mm/pti: Allocate a separate user PGD	2017-12-23 21:13:00 +01:00
hpet.c
hw_breakpoint.c
i8237.c
i8253.c
i8259.c
idt.c	x86/idt: Mark IDT tables __initconst	2018-01-14 20:09:45 +01:00
io_delay.c
ioport.c
irq_32.c	x86/retpoline/irq32: Convert assembler indirect jumps	2018-01-12 00:14:32 +01:00
irq_64.c
irq_work.c
irq.c	x86/irq: Count Hyper-V reenlightenment interrupts	2018-01-30 23:55:33 +01:00
irqinit.c	x86/apic: Simplify init_bsp_APIC() usage	2018-02-13 17:30:38 +01:00
itmt.c
jailhouse.c	x86/jailhouse: Respect pci=lastbus command line settings	2018-01-20 08:15:44 +01:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c
kgdb.c
ksysfs.c
kvm.c	KVM: X86: use paravirtualized TLB Shootdown	2018-01-16 16:34:13 +01:00
kvmclock.c
ldt.c	x86/ldt: Make LDT pgtable free conditional	2017-12-31 16:55:09 +01:00
livepatch.c
machine_kexec_32.c	x86/apic: Remove the (now) unused disable_IO_APIC() function	2018-02-17 11:47:45 +01:00
machine_kexec_64.c	x86/apic: Remove the (now) unused disable_IO_APIC() function	2018-02-17 11:47:45 +01:00
Makefile	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-29 18:17:39 -08:00
mmconf-fam10h_64.c
module.c
mpparse.c	x86: Introduce and use MP IRQ trigger and polarity defines	2018-01-14 21:11:54 +01:00
msr.c
nmi_selftest.c
nmi.c
paravirt_patch_32.c
paravirt_patch_64.c
paravirt-spinlocks.c
paravirt.c
pci-calgary_64.c
pci-dma.c	dma-mapping: add an arch_dma_supported hook	2018-01-15 09:34:59 +01:00
pci-iommu_table.c
pci-nommu.c	dma-mapping: move swiotlb arch helpers to a new header	2018-01-10 16:40:54 +01:00
pci-swiotlb.c	swiotlb: rename swiotlb_free to swiotlb_exit	2018-01-15 09:35:39 +01:00
pcspeaker.c
perf_regs.c
platform-quirks.c	x86/platform: Control warm reset setup via legacy feature flag	2018-01-14 21:11:53 +01:00
pmem.c
probe_roms.c
process_32.c
process_64.c	x86/asm: Move 'status' from thread_struct to thread_info	2018-01-30 15:30:36 +01:00
process.c	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-30 13:01:09 -08:00
ptrace.c	x86/asm: Move 'status' from thread_struct to thread_info	2018-01-30 15:30:36 +01:00
pvclock.c
quirks.c
reboot_fixups_32.c
reboot.c	x86/apic: Fix restoring boot IRQ mode in reboot and kexec/kdump	2018-02-17 11:47:45 +01:00
relocate_kernel_32.S
relocate_kernel_64.S	x86/kexec: Make kexec (mostly) work in 5-level paging mode	2018-01-31 08:39:40 +01:00
resource.c
rtc.c
setup_percpu.c
setup.c	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-30 13:01:09 -08:00
signal_compat.c	signal: Unify and correct copy_siginfo_to_user32	2018-01-15 19:56:20 -06:00
signal.c	x86/asm: Move 'status' from thread_struct to thread_info	2018-01-30 15:30:36 +01:00
smp.c
smpboot.c	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-30 13:01:09 -08:00
stacktrace.c	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-01-03 16:41:07 -08:00
step.c
sys_x86_64.c
sysfb_efi.c
sysfb_simplefb.c
sysfb.c
tboot.c	x86/pti: Make unpoison of pgd for trusted boot work for real	2018-01-11 23:36:59 +01:00
tce_64.c
time.c	x86/time: Unconditionally register legacy timer interrupt	2018-01-14 20:18:23 +01:00
tls.c	x86/ldt: Make the LDT mapping RO	2017-12-23 21:13:01 +01:00
tls.h
topology.c
trace_clock.c
tracepoint.c
traps.c	Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-31 13:13:56 -08:00
tsc_msr.c
tsc_sync.c
tsc.c	x86/tsc: Introduce early tsc clocksource	2018-01-14 20:18:23 +01:00
umip.c
unwind_frame.c
unwind_guess.c
unwind_orc.c	ftrace, orc, x86: Handle ftrace dynamically allocated trampolines	2018-01-23 15:56:55 -05:00
uprobes.c
verify_cpu.S
vm86_32.c
vmlinux.lds.S	retpoline: Introduce start/end markers of indirect thunk	2018-01-19 16:31:28 +01:00
vsmp_64.c
x86_init.c	x86/apic: Rename variables and functions related to x86_io_apic_ops	2018-02-17 11:47:45 +01:00