From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH V6 01/10] xen/arm: gic-v3: Increase the size of GICR in address space for guest Date: Fri, 5 Jun 2015 17:04:57 +0100 Message-ID: <5571C8A9.6070903@citrix.com> References: <1433163388-16970-1-git-send-email-cbz@baozis.org> <1433163388-16970-2-git-send-email-cbz@baozis.org> <1433519363.7108.322.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Z0u7t-0002jY-Ha for xen-devel@lists.xenproject.org; Fri, 05 Jun 2015 16:05:45 +0000 In-Reply-To: <1433519363.7108.322.camel@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: Ian Campbell , Chen Baozi Cc: xen-devel@lists.xenproject.org, Chen Baozi List-Id: xen-devel@lists.xenproject.org On 05/06/15 16:49, Ian Campbell wrote: > On Mon, 2015-06-01 at 20:56 +0800, Chen Baozi wrote: >> From: Chen Baozi >> >> Currently it only supports up to 8 vCPUs. Increase the region to hold >> up to 128 vCPUs, which is the maximum number that GIC-500 supports. >> >> Signed-off-by: Chen Baozi >> Reviewed-by: Julien Grall > > Acked-by: Ian Campbell > > I did briefly wonder if we should shoot for the stars here and reserve > space for some enormous set of processors, but I suppose there's no > need. I though about the same things. AFF0 + AFF1 gives 4096 CPUs. Although as we will support only 128 vCPUs (see the last patch), reserving more space is not necessary. This space saved can be used for a bigger PCI MMIO region later. Regards, -- Julien Grall