From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45084) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsrMx-0002YC-A3 for qemu-devel@nongnu.org; Thu, 14 May 2015 07:32:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YsrMt-0001Vc-A5 for qemu-devel@nongnu.org; Thu, 14 May 2015 07:32:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57459) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsrMt-0001VV-3X for qemu-devel@nongnu.org; Thu, 14 May 2015 07:31:59 -0400 Message-ID: <55548777.9000702@redhat.com> Date: Thu, 14 May 2015 13:31:03 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1431516714-25816-1-git-send-email-drjones@redhat.com> <20150514103018.GM32765@cbox> <5554826E.1040706@redhat.com> <20150514112910.GR32765@cbox> In-Reply-To: <20150514112910.GR32765@cbox> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC/RFT PATCH v2 0/3] KVM: Introduce KVM_MEM_UNCACHED List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Christoffer Dall , Laszlo Ersek Cc: peter.maydell@linaro.org, Andrew Jones , ard.biesheuvel@linaro.org, marc.zyngier@arm.com, catalin.marinas@arm.com, qemu-devel@nongnu.org, agraf@suse.de, j.fanguede@virtualopensystems.com, kvmarm@lists.cs.columbia.edu, m.smarduch@samsung.com On 14/05/2015 13:29, Christoffer Dall wrote: > > (It's probably worth looking at the documentation in the first hunk too, > > under the commit message.) > > Why is this a hack/unintuitive? Is the semantics of the QEMU PCI bus > not simply that MMIO regions are coherent? Only until device assignment gets into the picture. Paolo