diff options
| author | Dou Liyang <douly.fnst@cn.fujitsu.com> | 2017-10-28 14:06:44 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-10-30 09:17:29 +0100 |
| commit | ca5d376e17072c1b60c3fee66f3be58ef018952d (patch) | |
| tree | 9e955494aebbbdacb6d27b69838b67341813be97 /drivers/vhost | |
| parent | e319e1fbd9d42420ab6eec0bfd75eb9ad7ca63b1 (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>
Diffstat (limited to 'drivers/vhost')
0 files changed, 0 insertions, 0 deletions