Messages in this thread | | | From | Jiri Slaby <> | Subject | irqdomain patch prevents booting qemu | Date | Fri, 3 Feb 2017 12:49:01 +0100 |
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Hi,
with this -next commit:
commit 08d85f3ea99f1eeafc4e8507936190e86a16ee8c Author: Marc Zyngier <marc.zyngier@arm.com> Date: Tue Jan 17 16:00:48 2017 +0000
irqdomain: Avoid activating interrupts more than once
I can no longer boot qemu machine. It stops booting at: [ 0.477566] x2apic enabled [ 0.478154] Switched APIC routing to physical x2apic. [ 0.479405] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
It loops in: #0 calibrate_APIC_clock () at arch/x86/kernel/apic/apic.c:757 #1 setup_boot_APIC_clock () at arch/x86/kernel/apic/apic.c:880 #2 0xffffffff81f7bef2 in apic_bsp_setup (upmode=<optimized out>) at arch/x86/kernel/apic/apic.c:2300 #3 0xffffffff81f79c84 in native_smp_prepare_cpus (max_cpus=<optimized out>) at arch/x86/kernel/smpboot.c:1339 #4 0xffffffff81f6801d in smp_prepare_cpus (max_cpus=<optimized out>) at ./arch/x86/include/asm/smp.h:85 #5 kernel_init_freeable () at init/main.c:1020 #6 0xffffffff8192372e in kernel_init (unused=<optimized out>) at init/main.c:956 #7 0xffffffff8192ac5c in ret_from_fork () at arch/x86/entry/entry_64.S:430
which is: 757 while (lapic_cal_loops <= LAPIC_CAL_LOOPS) 758 cpu_relax();
lapic_cal_loops is not incrementing, so it seems that interrupts are not coming.
Reverting the commit makes the machine boot again.
thanks, -- js suse labs
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