x86/paravirt: Fix native_patch()
authorPeter Zijlstra <peterz@infradead.org>
Thu, 8 Dec 2016 15:42:14 +0000 (16:42 +0100)
committerIngo Molnar <mingo@kernel.org>
Sun, 11 Dec 2016 12:09:19 +0000 (13:09 +0100)
commit45dbea5f55c05980cbb4c30047c71a820cd3f282
tree9b98e94730b7b533b7cd03c478ac2ffef3162aa4
parent6f38751510073cc054c5dffc3339b22f9385ceed
x86/paravirt: Fix native_patch()

While chasing a regression I noticed we potentially patch the wrong
code in native_patch().

If we do not select the native code sequence, we must use the default
patcher, not fall-through the switch case.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel test robot <xiaolong.ye@intel.com>
Fixes: 3cded4179481 ("x86/paravirt: Optimize native pv_lock_ops.vcpu_is_preempted()")
Link: http://lkml.kernel.org/r/20161208154349.270616999@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/paravirt_patch_32.c
arch/x86/kernel/paravirt_patch_64.c