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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 5C83CC43603 for ; Mon, 16 Dec 2019 15:49:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 137B7206E0 for ; Mon, 16 Dec 2019 15:49:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="HJ3NXwRA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728601AbfLPPtO (ORCPT ); Mon, 16 Dec 2019 10:49:14 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:23081 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728423AbfLPPtN (ORCPT ); Mon, 16 Dec 2019 10:49:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576511352; 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=FUEPuE3lmiTROt831qEr7XPbzQitQcYsLEoUTolKxh8=; b=HJ3NXwRAbWI+6zNGah01BEcABfkEvd79YFQP21WEpPNZk7w4VSnBQGnRHlUiWzhZomKG/l ZuN4svGdVQZGxqYBwt8o+rbHEhgzgCHtn2/j3SR/aqL1m6H3D003nwi9WrO2XIN6pqWxH1 uxEoFEiee9liPAtehSFBzsPXToXgF4k= Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-411-ML3euJG2M5SI6h-Qh5s9GQ-1; Mon, 16 Dec 2019 10:49:11 -0500 X-MC-Unique: ML3euJG2M5SI6h-Qh5s9GQ-1 Received: by mail-qt1-f198.google.com with SMTP id o18so4853496qtt.19 for ; Mon, 16 Dec 2019 07:49:11 -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:user-agent; bh=FUEPuE3lmiTROt831qEr7XPbzQitQcYsLEoUTolKxh8=; b=hf0lnGIveRoh4x5LFy7LdQ3bD89p5fZV6nA3ntJh1NnyYUwvEsa8jX2W0b3qSm+fnl k1FyJIvf+CznYcBORSJRN2JbWxsY7FJnZOuJY/wSGkbW5YE44upY5u8ExKIuNfcQzPcT /KRlhEEz5rhMsXEpcogcbXZUHMkQbJ9XxkIN4NmGXPaRyMpndVRqLzxF6xq+l1qHG1T4 LO3GPdyNx9QwNYQzduBbLBFUqoY4J6K/KA+vxjpXG9QoB3GhrMABH18gzXw9gAU/W63i s2p0UkTlQoFkJuOKvTf+1Dm5UHLDpFBEtAu5aFhzRBEupXS7u6ADRphm419b/fsNK+zo tO/g== X-Gm-Message-State: APjAAAU99ZYofnWEvM2JHqSRdJnWqSybHGgwhxM8VXVAHSjJsgzuCHS6 cPRYDN4619w7fYO49AN+ZKe/wXAeZOfx+ouJBZFHZfenlBTKjehaCq2vi2zZRf1tXvw7cSjpOAb v9ihNX7FHwA1Q0VKdhzfFr+Nj X-Received: by 2002:aed:376a:: with SMTP id i97mr24765828qtb.44.1576511036535; Mon, 16 Dec 2019 07:43:56 -0800 (PST) X-Google-Smtp-Source: APXvYqzNO+M+uMPH2PC7v8tiGPqdgQ481MGIvuyPN8mLjwyvKqfzFBQlyb23FzKFU9qaIy6pSbyfug== X-Received: by 2002:aed:376a:: with SMTP id i97mr24765811qtb.44.1576511036310; Mon, 16 Dec 2019 07:43:56 -0800 (PST) Received: from xz-x1 ([104.156.64.75]) by smtp.gmail.com with ESMTPSA id f42sm7002645qta.0.2019.12.16.07.43.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Dec 2019 07:43:55 -0800 (PST) Date: Mon, 16 Dec 2019 10:43:56 -0500 From: Peter Xu To: Paolo Bonzini Cc: Christophe de Dinechin , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Sean Christopherson , "Dr . David Alan Gilbert" , Vitaly Kuznetsov Subject: Re: [PATCH RFC 04/15] KVM: Implement ring-based dirty memory tracking Message-ID: <20191216154356.GE83861@xz-x1> References: <20191129213505.18472-1-peterx@redhat.com> <20191129213505.18472-5-peterx@redhat.com> <20191213202324.GI16429@xz-x1> <20191214162644.GK16429@xz-x1> <0f084179-2a5d-e8d9-5870-3cc428105596@redhat.com> <20191216152647.GD83861@xz-x1> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 16, 2019 at 04:31:50PM +0100, Paolo Bonzini wrote: > No u64, please. u32 I can agree with, 16-bit *should* be enough but it > is a bit tight, so let's make it 32-bit if we drop the union idea. Sure. -- Peter Xu