From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57246) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZTmSh-0005EI-OZ for qemu-devel@nongnu.org; Mon, 24 Aug 2015 03:46:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZTmSc-0003bn-Pw for qemu-devel@nongnu.org; Mon, 24 Aug 2015 03:46:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:44715) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZTmSc-0003bV-KC for qemu-devel@nongnu.org; Mon, 24 Aug 2015 03:46:30 -0400 References: <02ce01d0de3e$f3bd1c20$db375460$@samsung.com> From: Alexander Graf Message-ID: <55DACBD1.2040408@suse.de> Date: Mon, 24 Aug 2015 00:46:25 -0700 MIME-Version: 1.0 In-Reply-To: <02ce01d0de3e$f3bd1c20$db375460$@samsung.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v8] hw/arm/virt: Add high MMIO PCI region, 512G in size List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Pavel Fedin , qemu-devel@nongnu.org Cc: peter.maydell@linaro.org On 24.08.15 00:31, Pavel Fedin wrote: > This large region is necessary for some devices like ivshmem and video cards > 32-bit kernels can be built without LPAE support. In this case such a kernel > will not be able to use PCI controller which has windows in high addresses. > In order to work around the problem, "highmem" option is introduced. It > defaults to on on, but can be manually set to off in order to be able to run > those old 32-bit guests. > > Signed-off-by: Pavel Fedin Except for the ACPI parts: Reviewed-by: Alexander Graf Alex