Merge tag 'kvm-ppc-fixes-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-master

PPC KVM fixes for 5.2

- Several bug fixes for the new XIVE-native code.
- Replace kvm->lock by other mutexes in several places where we hold a
  vcpu mutex, to avoid lock order inversions.
- Fix a lockdep warning on guest entry for radix-mode guests.
- Fix a bug causing user-visible corruption of SPRG3 on the host.

1 files changed, 5 insertions, 6 deletions

diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
index 039fbd822ec6..92b6b7cf67dd 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -718,12 +718,11 @@ USER(\label, ic	ivau, \tmp2)			// invalidate I line PoU
  * the output section, any use of such directives is undefined.
  *
  * The yield itself consists of the following:
- * - Check whether the preempt count is exactly 1, in which case disabling
- *   preemption once will make the task preemptible. If this is not the case,
- *   yielding is pointless.
- * - Check whether TIF_NEED_RESCHED is set, and if so, disable and re-enable
- *   kernel mode NEON (which will trigger a reschedule), and branch to the
- *   yield fixup code.
+ * - Check whether the preempt count is exactly 1 and a reschedule is also
+ *   needed. If so, calling of preempt_enable() in kernel_neon_end() will
+ *   trigger a reschedule. If it is not the case, yielding is pointless.
+ * - Disable and re-enable kernel mode NEON, and branch to the yield fixup
+ *   code.
  *
  * This macro sequence may clobber all CPU state that is not guaranteed by the
  * AAPCS to be preserved across an ordinary function call.