AcoSail/kernel_optimize_test
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da7ed9f98f
kernel_optimize_test/arch/x86_64/kernel
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Vivek Goyal da7ed9f98f [PATCH] x86_64: timer interrupt lockup due to pending interrupt 
o check_timer() routine fails while second kernel is booting after a crash
  on an opetron box. Problem happens because timer vector (0x31) seems to be
  locked.

o After a system crash, it is not safe to service interrupts any more, hence
  interrupts are disabled. This leads to pending interrupts at LAPIC. LAPIC
  sends these interrupts to the CPU during early boot of second kernel. Other
  pending interrupts are discarded saying unexpected trap but timer interrupt
  is serviced and CPU does not issue an LAPIC EOI because it think this
  interrupt came from i8259 and sends ack to 8259. This leads to vector 0x31
  locking as LAPIC does not clear respective ISR and keeps on waiting for
  EOI.

o This patch issues extra EOI for the pending interrupts who have ISR set.

o Though today only timer seems to be the special case because in early
  boot it thinks interrupts are coming from i8259 and uses
  mask_and_ack_8259A() as ack handler and does not issue LAPIC EOI. But
  probably doing it in generic manner for all vectors makes sense.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:57 -08:00
..
acpi [ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once 2005-12-01 01:30:35 -05:00
cpufreq Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
aperture.c [PATCH] x86_64: no_iommu removal in pci-gart.c 2006-02-26 09:53:29 -08:00
apic.c [PATCH] x86_64: timer interrupt lockup due to pending interrupt 2006-03-25 09:10:57 -08:00
asm-offsets.c [PATCH] x86_64: Allow nesting of int3 by default for kprobes 2006-01-16 11:27:58 -08:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
crash.c [PATCH] kdump: x86_64 save cpu registers upon crash 2006-01-10 08:01:28 -08:00
e820.c [PATCH] kdump: x86_64: add memmmap command line option 2006-01-10 08:01:27 -08:00
early_printk.c [PATCH] early_printk: cleanup trailiing whitespace 2006-03-24 07:33:25 -08:00
entry.S Revert "[PATCH] x86-64: Fix up handling of non canonical user RIPs" 2006-03-14 08:01:47 -08:00
functionlist [PATCH] x86_64: Basic reorder infrastructure 2006-03-25 09:10:56 -08:00
genapic_cluster.c [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI 2006-01-11 19:01:57 -08:00
genapic_flat.c [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI 2006-01-11 19:01:57 -08:00
genapic.c [PATCH] x86-64: Use physflat on Intel for < 8 CPUs with CPU hotplug 2005-09-12 10:50:56 -07:00
head64.c [PATCH] i386/x86-64: make setup_early_printk() usage consistent 2006-01-11 19:05:04 -08:00
head.S [PATCH] x86_64: Patch to make the head.S-must-be-first-in-vmlinux order explicit 2006-03-25 09:10:55 -08:00
i387.c [PATCH] amd64: task_thread_info() 2006-01-12 09:08:51 -08:00
i8259.c [PATCH] amd64: task_thread_info() 2006-01-12 09:08:51 -08:00
init_task.c [PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros 2006-01-08 20:13:38 -08:00
io_apic.c [PATCH] x86_64: fix orphaned bits of timer init messages 2006-03-25 09:10:56 -08:00
ioport.c [PATCH] capable/capability.h (arch/) 2006-01-11 18:42:14 -08:00
irq.c [PATCH] more for_each_cpu() conversions 2006-03-23 07:38:17 -08:00
kprobes.c [PATCH] sem2mutex: kprobes 2006-03-23 07:38:12 -08:00
ldt.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
machine_kexec.c [PATCH] fix kexec asm 2006-03-08 14:15:04 -08:00
Makefile [PATCH] x86-64: react to new topology.c location 2006-02-25 11:12:15 -08:00
mce_amd.c [PATCH] x86_64: Sparse warnings fix. 2006-01-11 19:05:00 -08:00
mce_intel.c [PATCH] x86_64: Some housekeeping in local APIC code 2006-01-11 19:05:03 -08:00
mce.c [PATCH] x86_64: {set,clear,test}_bit() related cleanup and pci_mmcfg_init() fix 2006-03-24 07:33:15 -08:00
module.c [PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support 2005-05-05 16:36:33 -07:00
mpparse.c [PATCH] x86_64: cleanup allocating logical cpu numbers in x86_64 2006-03-25 09:10:53 -08:00
nmi.c [PATCH] x86_64: actively synchronize vmalloc area when registering certain callbacks 2006-03-25 09:10:53 -08:00
pci-dma.c [PATCH] x86_64: Don't invoke OOM killer during dma_alloc_coherent() 2006-03-25 09:10:55 -08:00
pci-gart.c [PATCH] x86_64: Use cpu_relax in poll loop in GART IOMMU 2006-03-25 09:10:53 -08:00
pci-nommu.c [PATCH] x86_64: IOMMU printk cleanup 2006-02-04 16:43:15 -08:00
pci-swiotlb.c [PATCH] x86_64: IOMMU printk cleanup 2006-02-04 16:43:15 -08:00
pmtimer.c [PATCH] x86_64: Calibrate APIC timer using PM timer 2006-02-04 16:43:15 -08:00
process.c [PATCH] x86_64: save FPU context slightly later 2006-03-25 09:10:52 -08:00
ptrace.c [PATCH] x86_64: disallow multi-byte hardware execution breakpoints 2006-03-25 09:10:52 -08:00
reboot.c [PATCH] i386/x86-64: Don't IPI to offline cpus on shutdown 2006-01-11 19:04:50 -08:00
relocate_kernel.S [PATCH] kexec: x86_64 kexec implementation 2005-06-25 16:24:50 -07:00
setup64.c [PATCH] x86_64: Change default setting for noexec32 to match i386 kernel 2006-03-25 09:10:56 -08:00
setup.c [PATCH] x86_64: Implement early DMI scanning 2006-03-25 09:10:55 -08:00
signal.c [PATCH] swsusp: finally solve mysqld problem 2006-03-23 07:38:08 -08:00
smp.c [PATCH] x86_64: Use cpumask bitops for cpu_vm_mask 2006-03-25 09:10:56 -08:00
smpboot.c [PATCH] x86_64: Move the SMP time selection earlier 2006-02-26 09:53:31 -08:00
suspend_asm.S [PATCH] x86_64: Set up safe page tables during resume 2005-10-10 08:36:46 -07:00
suspend.c [PATCH] x86_64: Align and pad x86_64 GDT on page boundary 2006-01-11 19:04:53 -08:00
sys_x86_64.c [PATCH] x86_64: Use common sys_time64 2005-11-14 19:55:17 -08:00
syscall.c [PATCH] x86/x86_64: mark rodata section read-only: make some datastructures const 2006-01-06 08:33:36 -08:00
time.c [PATCH] x86_64: Reename CMOS update warning 2006-03-25 09:10:55 -08:00
trampoline.S [PATCH] x86_64: Fix SMP bootup with CONFIG_KDUMP enabled 2006-01-11 19:09:58 -08:00
traps.c [PATCH] x86_64: miscellaneous cleanup 2006-03-25 09:10:54 -08:00
vmlinux.lds.S [PATCH] x86_64: Basic reorder infrastructure 2006-03-25 09:10:56 -08:00
vsmp.c [PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_arch 2006-01-11 19:05:01 -08:00
vsyscall.c [PATCH] x86_64: Use standard __always_inline in vsyscall.c 2006-01-11 19:04:58 -08:00
x8664_ksyms.c [PATCH] x86_64: remove dead do_softirq_thunk 2006-03-25 09:10:53 -08:00