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authorDou Liyang <douly.fnst@cn.fujitsu.com>2017-10-28 14:06:44 +0800
committerIngo Molnar <mingo@kernel.org>2017-10-30 09:17:29 +0100
commitca5d376e17072c1b60c3fee66f3be58ef018952d (patch)
tree9e955494aebbbdacb6d27b69838b67341813be97 /drivers/vhost
parente319e1fbd9d42420ab6eec0bfd75eb9ad7ca63b1 (diff)
x86/paravirt: Set up the virt_spin_lock_key after static keys get initialized
Commit: 9043442b43b1 ("locking/paravirt: Use new static key for controlling call of virt_spin_lock()") sets the static virt_spin_lock_key to a value before jump_label_init() has been called, which will result in a WARN(). Reorder the initialization sequence: - Move the native_pv_lock_init() into native_smp_prepare_cpus() - set the value in xen_init_lock_cpu() to avoid calling into the not yet initialized static keys subsystem. Suggested-by: Juergen Gross <jgross@suse.com> Reported-by: Juergen Gross <jgross@suse.com> Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> Reviewed-by: Juergen Gross <jgross@suse.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: boris.ostrovsky@oracle.com Cc: bp@suse.de Cc: luto@kernel.org Cc: vkuznets@redhat.com Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1509170804-3813-1-git-send-email-douly.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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