From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: [GIT PULL rcu/urgent] Allow SRCU readers in irq handlers for KVM Date: Thu, 8 Jun 2017 18:45:51 -0700 Message-ID: <20170609014551.GA22701@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel@vger.kernel.org, linuc.decode@gmail.com, kvm@vger.kernel.org, pbonzini@redhat.com To: mingo@kernel.org Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:45558 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751448AbdFIBp5 (ORCPT ); Thu, 8 Jun 2017 21:45:57 -0400 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v591iJDC003493 for ; Thu, 8 Jun 2017 21:45:56 -0400 Received: from e12.ny.us.ibm.com (e12.ny.us.ibm.com [129.33.205.202]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ayfse4pvp-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 08 Jun 2017 21:45:56 -0400 Received: from localhost by e12.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 8 Jun 2017 21:45:55 -0400 Content-Disposition: inline Sender: kvm-owner@vger.kernel.org List-ID: 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(-)