From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: Re: [RFC][PATCH 0/2] s390/kvm: add kvm support for guest page hinting v2 Date: Thu, 25 Jul 2013 12:44:48 +0200 Message-ID: <51F101A0.3050104@de.ibm.com> References: <1374742461-29160-1-git-send-email-schwidefsky@de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Andrew Morton , Mel Gorman , Nick Piggin , Hugh Dickins , Rik van Riel To: Martin Schwidefsky Return-path: In-Reply-To: <1374742461-29160-1-git-send-email-schwidefsky@de.ibm.com> Sender: owner-linux-mm@kvack.org List-Id: kvm.vger.kernel.org On 25/07/13 10:54, Martin Schwidefsky wrote: > v1->v2: > - found a way to simplify the common code patch > > Linux on s390 as a guest under z/VM has been using the guest page > hinting interface (alias collaborative memory management) for a long > time. The full version with volatile states has been deemed to be too > complicated (see the old discussion about guest page hinting e.g. on > http://marc.info/?l=linux-mm&m=123816662017742&w=2). > What is currently implemented for the guest is the unused and stable > states to mark unallocated pages as freely available to the host. > This works just fine with z/VM as the host. > > The two patches in this series implement the guest page hinting > interface for the unused and stable states in the KVM host. > Most of the code specific to s390 but there is a common memory > management part as well, see patch #1. > > The code is working stable now, from my point of view this is ready > for prime-time. > > Konstantin Weitz (2): > mm: add support for discard of unused ptes > s390/kvm: support collaborative memory management Can you also add the patch from our tree that reset the usage states on reboot (diag 308 subcode 3 and 4)? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org