From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [RFC 09/14] xen/xsm: flask: MSI is PCI specific Date: Fri, 14 Mar 2014 18:15:50 +0000 Message-ID: <53234756.3070108@linaro.org> References: <1394640969-25583-1-git-send-email-julien.grall@linaro.org> <1394640969-25583-10-git-send-email-julien.grall@linaro.org> <5321C1D8.6080306@tycho.nsa.gov> <5321C34C.9080803@linaro.org> <1394817948.6065.12.camel@kazak.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1WOWe9-0004Xj-RJ for xen-devel@lists.xenproject.org; Fri, 14 Mar 2014 18:15:54 +0000 Received: by mail-ee0-f52.google.com with SMTP id e49so1686563eek.39 for ; Fri, 14 Mar 2014 11:15:52 -0700 (PDT) In-Reply-To: <1394817948.6065.12.camel@kazak.uk.xensource.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: Ian Campbell Cc: xen-devel@lists.xenproject.org, Daniel De Graaf , tim@xen.org, stefano.stabellini@citrix.com List-Id: xen-devel@lists.xenproject.org Hi Ian, On 03/14/2014 05:25 PM, Ian Campbell wrote: > On Thu, 2014-03-13 at 14:40 +0000, Julien Grall wrote: >> >> Right, nr_static_irqs is set to 1024 on ARM. For now every IRQs, are not >> higher than this number. > > This will change before long though. Would HAVE_MSI_IRQS be a better > name for this particular arch-configurable? After all PCI without MSI is > plausible isn't it? (well, maybe not in the modern world) Most of PCI passthrough code is relying that MSI is also implemented. Futhermore, I think the plan for ARM is to support both PCI and MSI. That's why I chose HAS_PCI. Regards, -- Julien Grall