From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59253) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dpH1X-000461-GE for qemu-devel@nongnu.org; Tue, 05 Sep 2017 12:48:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dpH1R-00043A-Qt for qemu-devel@nongnu.org; Tue, 05 Sep 2017 12:48:26 -0400 Received: from mail-pf0-x22c.google.com ([2607:f8b0:400e:c00::22c]:33172) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dpH1R-00042w-K0 for qemu-devel@nongnu.org; Tue, 05 Sep 2017 12:48:21 -0400 Received: by mail-pf0-x22c.google.com with SMTP id y68so8720966pfd.0 for ; Tue, 05 Sep 2017 09:48:21 -0700 (PDT) References: <1503414539-28762-1-git-send-email-peter.maydell@linaro.org> <1503414539-28762-11-git-send-email-peter.maydell@linaro.org> From: Richard Henderson Message-ID: Date: Tue, 5 Sep 2017 09:48:17 -0700 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 10/20] nvic: Add NS alias SCS region List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: qemu-arm , QEMU Developers , "patches@linaro.org" On 09/05/2017 09:26 AM, Peter Maydell wrote: > We don't map the hole. The container is 0x21000 in size, the normal > nvic_sysregs region is 0x1000 at offset 0x0 (which will be 0xe000e000 > in the system address space), and the NS alias region > is 0x1000 at offset 0x20000 (0xe002e000 in the system address space). > There's nothing mapped in the hole in the container, so accesses > there will busfault, as they will for other PPB accesses before or > after the SCSes. Ok, it's not wrong, but I still don't understand the need for the container. r~