[0/2] xen/locks: fix preempt disabling in lock handling

Message

Jürgen Groß March 13, 2020, 8:05 a.m. UTC

Xen's rwlocks don't disable preemption at all, while spinlocks are
doing it only after obtaining the lock.

While not really critical, it is wrong.

This series fixes that.

Juergen Gross (2):
  xen/rwlocks: call preempt_disable() when taking a rwlock
  xen/spinlocks: fix placement of preempt_[dis|en]able()

 xen/common/spinlock.c    |  9 ++++++---
 xen/include/xen/rwlock.h | 18 +++++++++++++++++-
 2 files changed, 23 insertions(+), 4 deletions(-)