From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Hansen Subject: Re: [RFC PATCH 2/4] kvm: Add host side support for free memory hints Date: Mon, 11 Feb 2019 09:41:19 -0800 Message-ID: <39c915a7-e317-db01-0286-579230f37da2@intel.com> References: <20190204181118.12095.38300.stgit@localhost.localdomain> <20190204181546.12095.81356.stgit@localhost.localdomain> <20190209194108-mutt-send-email-mst@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, rkrcmar@redhat.com, alexander.h.duyck@linux.intel.com, x86@kernel.org, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, pbonzini@redhat.com, tglx@linutronix.de, akpm@linux-foundation.org To: "Michael S. Tsirkin" , Alexander Duyck Return-path: In-Reply-To: <20190209194108-mutt-send-email-mst@kernel.org> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 2/9/19 4:44 PM, Michael S. Tsirkin wrote: > So the policy should not leak into host/guest interface. > Instead it is better to just keep the pages pinned and > ignore the hint for now. It does seems a bit silly to have guests forever hinting about freed memory when the host never has a hope of doing anything about it. Is that part fixable?