From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: [PATCH v2 02/10] arm/arm64: KVM: Move vgic handling to a non-preemptible section Date: Sat, 18 Jul 2015 00:15:27 +0200 Message-ID: <20150717221527.GI14024@cbox> References: <1436378202-20224-1-git-send-email-marc.zyngier@arm.com> <1436378202-20224-3-git-send-email-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: kvm@vger.kernel.org, Andre Przywara , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org To: Marc Zyngier Return-path: Content-Disposition: inline In-Reply-To: <1436378202-20224-3-git-send-email-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org On Wed, Jul 08, 2015 at 06:56:34PM +0100, Marc Zyngier wrote: > As we're about to introduce some serious GIC-poking to the vgic code, > it is important to make sure that we're going to poke the part of > the GIC that belongs to the CPU we're about to run on (otherwise, > we'd end up with some unexpected interrupts firing)... > = > Introducing a non-preemptible section in kvm_arch_vcpu_ioctl_run > prevents the problem from occuring. > = > Signed-off-by: Marc Zyngier > Reviewed-by: Alex Benn=E9e Reviewed-by: Christoffer Dall