From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Tue, 8 Nov 2016 19:10:22 +0000 Subject: Summary of LPC guest MSI discussion in Santa Fe In-Reply-To: <5822214F.2070500@redhat.com> References: <1478209178-3009-1-git-send-email-eric.auger@redhat.com> <20161103220205.37715b49@t450s.home> <20161108024559.GA20591@arm.com> <20161108175457.GK20591@arm.com> <5822214F.2070500@redhat.com> Message-ID: <20161108191022.GA17771@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Nov 08, 2016 at 02:02:39PM -0500, Don Dutile wrote: > On 11/08/2016 12:54 PM, Will Deacon wrote: > >A first step would be making all this opt-in, and only supporting GICv3 > >ITS for now. > You're trying to support a config that is < GICv3 and no ITS ? ... > That would be the equiv. of x86 pre-intr-remap, and that's why allow_unsafe_interrupts > hook was created ... to enable devel/kick-the-tires. Yup, that's exactly what I was envisaging. For systems that can't do passthrough safely, we'll always have to throw a devel switch. Will