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Commit:
9043442b43 ("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>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.