From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55352 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727324AbgIYQIN (ORCPT ); Fri, 25 Sep 2020 12:08:13 -0400 Subject: Re: [PATCH v1 1/4] memory: allocation in low memory From: Pierre Morel References: <1601049764-11784-1-git-send-email-pmorel@linux.ibm.com> <1601049764-11784-2-git-send-email-pmorel@linux.ibm.com> Message-ID: <769e3e7e-7bf1-4974-77da-a260b033f151@linux.ibm.com> Date: Fri, 25 Sep 2020 18:08:05 +0200 MIME-Version: 1.0 In-Reply-To: <1601049764-11784-2-git-send-email-pmorel@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit List-ID: To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, frankja@linux.ibm.com, david@redhat.com, thuth@redhat.com, cohuck@redhat.com, imbrenda@linux.ibm.com Arrrghh sorry, I forgot the kvm-unit-tests TAG On 2020-09-25 18:02, Pierre Morel wrote: > Some architectures need allocations to be done under a > specific address limit to allow DMA from I/O. > > We propose here a very simple page allocator to get > pages allocated under this specific limit. > > The DMA page allocator will only use part of the available memory > under the DMA address limit to let room for the standard allocator. > -- Pierre Morel IBM Lab Boeblingen