[v1] xen/locks: fix preempt disabling in lock handling

[Xen-devel] [PATCH 0/2] xen/locks: fix preempt disabling in lock handling

Juergen Gross posted 2 patches 4 years, 1 month ago

Diff against v2
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git fetch https://github.com/patchew-project/xen tags/patchew/20200313080517.28728-1-jgross@suse.com

There is a newer version of this series

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

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[Xen-devel] [PATCH 0/2] xen/locks: fix preempt disabling in lock handling

Posted by Juergen Gross 4 years, 1 month ago

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(-)

-- 
2.16.4


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