linux-kernel - [GIT PULL rcu/urgent] Allow SRCU readers in irq handlers for KVM

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Date:   Thu, 8 Jun 2017 18:45:51 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     mingo@...nel.org
Cc:     linux-kernel@...r.kernel.org, linuc.decode@...il.com,
        kvm@...r.kernel.org, pbonzini@...hat.com
Subject: [GIT PULL rcu/urgent] Allow SRCU readers in irq handlers for KVM

Hello, Ingo,

This series enables srcu_read_lock() and srcu_read_unlock to be used from
interrupt handlers, which fixes a bug in KVM's use of SRCU in delivery
of interrupts to guest OSes.  These patches have been exposed to 0day
Test Robot and to -next testing, have been tested by the KVM folks,
and were posted to LKML:

http://lkml.kernel.org/r/20170605220919.GA27820@linux.vnet.ibm.com

These changes, based on v4.2-rc4, are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/urgent

for you to fetch changes up to 1123a6041654e8f889014659593bad4168e542c2:

  srcu: Allow use of Classic SRCU from both process and interrupt context (2017-06-08 08:25:19 -0700)

----------------------------------------------------------------
Paolo Bonzini (2):
      srcu: Allow use of Tiny/Tree SRCU from both process and interrupt context
      srcu: Allow use of Classic SRCU from both process and interrupt context

 include/linux/srcu.h  | 2 --
 kernel/rcu/srcu.c     | 5 ++---
 kernel/rcu/srcutiny.c | 7 ++++---
 kernel/rcu/srcutree.c | 5 ++---
 4 files changed, 8 insertions(+), 11 deletions(-)