From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97C55C33C8C for ; Tue, 7 Jan 2020 14:33:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 68F6E2467A for ; Tue, 7 Jan 2020 14:33:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gU2K27p8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727806AbgAGOdk (ORCPT ); Tue, 7 Jan 2020 09:33:40 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:25113 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727559AbgAGOdk (ORCPT ); Tue, 7 Jan 2020 09:33:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578407619; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=LIlISc+oFNSUFYsXBbt0s1bPhdRwU0QuyhBE/WUY0LY=; b=gU2K27p8Z6R8JiXoBxApgt7/kPhp/RxyWMCjrIQEz8tyQstueXvcENXvAVxO3OItYonvyk OuN+Q6eb7V3GDTFs+PMCKB/uh0qQxaEe1i5z6DtK+z/I+WEvp3HRy4TVzzlTKv9oGnX6am GsRHNHUaujmqSvcvoKJ7gkNP1ostWEI= Received: from mail-qv1-f71.google.com (mail-qv1-f71.google.com [209.85.219.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-1-3AlNr6BLODuxzAIXc3Oayw-1; Tue, 07 Jan 2020 09:33:37 -0500 X-MC-Unique: 3AlNr6BLODuxzAIXc3Oayw-1 Received: by mail-qv1-f71.google.com with SMTP id ce17so34747qvb.5 for ; Tue, 07 Jan 2020 06:33:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=LIlISc+oFNSUFYsXBbt0s1bPhdRwU0QuyhBE/WUY0LY=; b=h2v8WwdadzhuQAkwntvjCwH1MpoBDcyt6afsgtYxN5hV/ytcWLbH9Omhu9NWxQ+nDO lE1sk2qIY2F0qw2zgUpEnaig1CiMJSTaxHkyFNyGkzOeFz7rpiJ/rJBsvi5aIZRm45zE C3UraR0e8AV9wuDQuNkhAE7lBtqDvgnNWIzgEBb8bCtNvA5iWd3cjinndzUPZw27mo0s MaJdWeEEWM98CYUomTx8WBW81jWMJfHZsPKH83OTy8siQLPkxVb/nvwLp+yK4Nj9/c14 +tYSFCkIVdmAeZvCyhvAKKZyrSqoyX9l7oE27zEkxoMrnu6qSrzTJWZHIwB1TpqM7Dy9 rFhw== X-Gm-Message-State: APjAAAVx3cdr3H3+WfPHShjiRAHKwPAF3Nc1rekexaVbTQaz+W36DMhZ eGpZRodRHb0PciVQJL8ro9lzD/ZA5EWB8M+X/J4LIW3DpPYIKlDFBAhn8H+QAxVaFzvZ5L77bQJ gbufszUqegNI+F2UOK+Xy4hmPVi2O X-Received: by 2002:a05:620a:1663:: with SMTP id d3mr89412682qko.204.1578407617059; Tue, 07 Jan 2020 06:33:37 -0800 (PST) X-Google-Smtp-Source: APXvYqwIGMDr1WALhNYI3XjsUL6aYAw4TNtgyas8iR6yCDYV5GmJoDkDtGiffkZzxsW1v0I7msmFFA== X-Received: by 2002:a05:620a:1663:: with SMTP id d3mr89412659qko.204.1578407616724; Tue, 07 Jan 2020 06:33:36 -0800 (PST) Received: from xz-x1 ([104.156.64.74]) by smtp.gmail.com with ESMTPSA id a19sm22455306qka.75.2020.01.07.06.33.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 06:33:35 -0800 (PST) Date: Tue, 7 Jan 2020 09:33:34 -0500 From: Peter Xu To: Ben Gardon Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Cannon Matthews , Andrew Jones Subject: Re: [PATCH v3 1/8] KVM: selftests: Create a demand paging test Message-ID: <20200107143334.GF219677@xz-x1> References: <20191216213901.106941-1-bgardon@google.com> <20191216213901.106941-2-bgardon@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20191216213901.106941-2-bgardon@google.com> Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Mon, Dec 16, 2019 at 01:38:54PM -0800, Ben Gardon wrote: > While userfaultfd, KVM's demand paging implementation, is not specific > to KVM, having a benchmark for its performance will be useful for > guiding performance improvements to KVM. As a first step towards creating > a userfaultfd demand paging test, create a simple memory access test, > based on dirty_log_test. > > Signed-off-by: Ben Gardon It's fine to start with x86-only for this test, but imho it would be better to mention that in cover letter, or reply to reviewer comments on that you removed aarch64 from previous post. Reviewed-by: Peter Xu -- Peter Xu