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    SubjectRe: [PATCH] x86/apic: Fix circular locking dependency between console and hrtimer locks
    On Mon, Apr 27, 2020 at 05:31:21PM +0200, Thomas Gleixner wrote:
    > Leon Romanovsky <leon@kernel.org> writes:
    > > OK, I consulted with verification people and back then the trigger was:
    > > Reproduce when run "echo 1 > /sys/kernel/debug/clear_warn_once" after
    > > reboot
    >
    > That explains it.
    >
    > > [ 0.937310] Freeing SMP alternatives memory: 32K
    > > [ 0.940471] TSC deadline timer enabled
    >
    > So here is the first one which sets 'once'. Of course if you clear 'once'
    > afterwards then this triggers because the context is completely
    > different.
    >
    > So the right thing to do is to move this out of __setup_APIC_LVTT() and
    > be done with it.

    Thanks a lot.

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