From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: [RFC/RFT PATCH v2 0/3] KVM: Introduce KVM_MEM_UNCACHED Date: Thu, 14 May 2015 13:36:34 +0200 Message-ID: <20150514113634.GS32765@cbox> References: <1431516714-25816-1-git-send-email-drjones@redhat.com> <20150514103018.GM32765@cbox> <5554826E.1040706@redhat.com> <20150514112910.GR32765@cbox> <55548777.9000702@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 64B885147A for ; Thu, 14 May 2015 07:27:18 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LkIai4mqvEYs for ; Thu, 14 May 2015 07:27:16 -0400 (EDT) Received: from mail-la0-f53.google.com (mail-la0-f53.google.com [209.85.215.53]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 6B67351473 for ; Thu, 14 May 2015 07:27:15 -0400 (EDT) Received: by lagv1 with SMTP id v1so63127545lag.3 for ; Thu, 14 May 2015 04:36:23 -0700 (PDT) Content-Disposition: inline In-Reply-To: <55548777.9000702@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: Paolo Bonzini Cc: ard.biesheuvel@linaro.org, marc.zyngier@arm.com, catalin.marinas@arm.com, qemu-devel@nongnu.org, Laszlo Ersek , kvmarm@lists.cs.columbia.edu List-Id: kvmarm@lists.cs.columbia.edu On Thu, May 14, 2015 at 01:31:03PM +0200, Paolo Bonzini wrote: > > > 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. > Will UEFI have to deal with device assignment in any respect? -Christoffer From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47029) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsrRE-0004FV-6L for qemu-devel@nongnu.org; Thu, 14 May 2015 07:36:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YsrRA-0003wZ-4w for qemu-devel@nongnu.org; Thu, 14 May 2015 07:36:28 -0400 Received: from mail-la0-f49.google.com ([209.85.215.49]:33879) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsrR9-0003wG-VB for qemu-devel@nongnu.org; Thu, 14 May 2015 07:36:24 -0400 Received: by laat2 with SMTP id t2so63169842laa.1 for ; Thu, 14 May 2015 04:36:23 -0700 (PDT) Date: Thu, 14 May 2015 13:36:34 +0200 From: Christoffer Dall Message-ID: <20150514113634.GS32765@cbox> References: <1431516714-25816-1-git-send-email-drjones@redhat.com> <20150514103018.GM32765@cbox> <5554826E.1040706@redhat.com> <20150514112910.GR32765@cbox> <55548777.9000702@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55548777.9000702@redhat.com> 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: Paolo Bonzini 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, Laszlo Ersek , kvmarm@lists.cs.columbia.edu, m.smarduch@samsung.com On Thu, May 14, 2015 at 01:31:03PM +0200, Paolo Bonzini wrote: > > > 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. > Will UEFI have to deal with device assignment in any respect? -Christoffer