From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: [PATCH v4 01/10] xen/arm: no need to set HCR_VI when using the vgic to inject irqs Date: Fri, 21 Mar 2014 14:06:27 +0000 Message-ID: <1395410787.19839.94.camel@kazak.uk.xensource.com> References: <1395232325-19226-1-git-send-email-stefano.stabellini@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1395232325-19226-1-git-send-email-stefano.stabellini@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Stefano Stabellini Cc: julien.grall@citrix.com, jtd@galois.com, xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Wed, 2014-03-19 at 12:31 +0000, Stefano Stabellini wrote: > HCR_VI forces the guest to resume execution in IRQ mode and can actually > cause spurious interrupt injections. > The GIC is capable of injecting interrupts into the guest and causing it > to switch to IRQ mode automatically, without any need for the hypervisor > to set HCR_VI manually. > > Signed-off-by: Stefano Stabellini Acked-by: Ian Campbell Do you happen to have a chapter number from the ARM ARM and/or the GIC spec to confirm what you say here? If so please can you include them. (did I fail to hit send, I guess so... )