From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH v8 0/7] xen/arm: Add GICv3 support Date: Mon, 04 Aug 2014 11:25:44 +0100 Message-ID: <53DF5FA8.3030605@linaro.org> References: <1406122913-8303-1-git-send-email-vijay.kilari@gmail.com> <53DEA871.6050001@linaro.org> <1407146811.18224.5.camel@kazak.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1407146811.18224.5.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: vijay.kilari@gmail.com, stefano.stabellini@eu.citrix.com, Prasun.Kapoor@caviumnetworks.com, vijaya.kumar@caviumnetworks.com, tim@xen.org, xen-devel@lists.xen.org, stefano.stabellini@citrix.com, jbeulich@suse.com, manish.jaggi@caviumnetworks.com List-Id: xen-devel@lists.xenproject.org On 08/04/2014 11:06 AM, Ian Campbell wrote: > On Sun, 2014-08-03 at 22:24 +0100, Julien Grall wrote: >> Hi Vijay, >> >> On 23/07/14 14:41, vijay.kilari@gmail.com wrote: >>> From: Vijaya Kumar K >>> >>> Add GICv3 support for arm64 platform. >>> From v6 version, this patch series is split into v6a and v6. >>> All the GICv2 and VGIC code refactoring patches of v6a are merged. >>> >>> The v8 version of GICv3 patches are posted here. >>> >>> Tested with ARM64 simulator with multicore core >>> and booted Dom0 kernel. >> >> Do you have any plan to add support for guest? This actual series looks >> pointless to me if we are only able to boot DOM0... > > That's not pointless, it's a necessary step along the way to supporting > GICv3. > > Remember: Xen wouldn't boot on these systems at all without GICv3 > support (since they lack v2 compatibility in h/w), so getting to a dom0 > prompt is a useful step in its own right. > >> Hence, this series >> doesn't support GICv2 emulation on GICv3. >> >> It would be nice if you fix the toolstack as soon as possible. > > A not for application bodge at the end of the series would be nice, but > not critical IMHO. Proper toolstack level support for gic v3 can come > next. I'm mostly worry on the fact in 8 versions of this series we didn't see any support/testing for GICv3 guest. If it doesn't happen that mean we will have a Xen 4.5 with GICv3 support only able to boot DOM0... I want to make sure that won't happen. Regards, -- Julien Grall