Messages in this thread | | | Subject | Re: irqdomain patch prevents booting qemu | From | Marc Zyngier <> | Date | Fri, 3 Feb 2017 11:57:01 +0000 |
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Hi Jiri,
On 03/02/17 11:49, Jiri Slaby wrote: > 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.
I think Thomas fixed this in https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1322872.html
which is currently in tip/irq/urgent
Thanks,
M. -- Jazz is not dead. It just smells funny...
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