2018-03-24 21:17-0700, Wanpeng Li: > From: Wanpeng Li <wanpengli@xxxxxxxxxxx> > > static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init() > WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:161 static_key_disable_cpuslocked+0x61/0x80 > RIP: 0010:static_key_disable_cpuslocked+0x61/0x80 > Call Trace: > static_key_disable+0x16/0x20 > start_kernel+0x192/0x4b3 > secondary_startup_64+0xa5/0xb0 > > Qspinlock will be choosed when dedicated pCPUs are available, however, the > static virt_spin_lock_key is set in kvm_spinlock_init() before jump_label_init() > has been called, which will result in a WARN(). This patch fixes it by delaying > the virt_spin_lock_key setup to .smp_prepare_cpus(). > > Reported-by: Davidlohr Bueso <dbueso@xxxxxxx> > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx> > Cc: Davidlohr Bueso <dbueso@xxxxxxx> > Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx> > --- Queued, thanks.
