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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B826FC64ED8 for ; Thu, 23 Feb 2023 21:13:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=zFUmT7gAAyKKb/aC3ADF5/RAKoogItVASOPDfqdGftQ=; b=gmZqZnoQf23nSnLw8E3BI397Q9 c2D9k4f7xuBlRhc5F6Jg+WDYUq8P4fPlrtfE2+pFYhb9KyeoL0FQd+jHTk6OBLjaDx2/qAqHiY9WQ zcccpe4aMuq8Ij5Y6BSGwKWgy6SMKfiaYum93PnpsPnOizgOZX+l3cX/eWTY36wor2BJS2NzfWVAZ PV9bKha/x8tdrH02kggZSwc7Z7Qma2HlDGJfwgtCIKQL0NOfDrZFAEktyqB6JyU1SWCj6zzXxnUEk y7rtsNyePfQWAJLRpkVSR7xz+S2hv5qmbY7U9IYl58gJuYD7nEuewT+AwQhZD/bEj1S3CPzHHZ6FX rBraBUXA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pVItC-000Lvk-AQ; Thu, 23 Feb 2023 21:12:30 +0000 Received: from mail-pj1-x1049.google.com ([2607:f8b0:4864:20::1049]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pVIt9-000LuZ-7R for linux-arm-kernel@lists.infradead.org; Thu, 23 Feb 2023 21:12:28 +0000 Received: by mail-pj1-x1049.google.com with SMTP id x10-20020a17090a6b4a00b002342e23955cso195581pjl.7 for ; Thu, 23 Feb 2023 13:12:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=jZqpqHNnDrkVf5YnH4C4p2Du+MWFI+rsSboHjRikfo0=; b=cstTUl3cDjETi7Uy5k8lUK4jDXVH5n84ULJ8Qdzf8KUig6GFtpHB7w0eoI8Plhg2NM 6FWa3l7sXNc+M6YDtvaFjXzlpRtWBMe5SojZXE91tPmgJMlFF/CW1ZZv81jiCr0fXexK lScdHryZlveE1J+z0J2TIi81MbXXQWHYdNInuM44+8VugSDN/fGG/tYGrW4Jcvq/Dl9n Ek7HnOVQiTB+e4FM6RTzQyIV1EEstxc2pOWecp5NaX9GOemJJxxrazzswOceIxFVcfln /s7eha+SalTSQycIbbCTH+sAFv5dgkYSrn8AD1goiYFHWVwKHCsyUeb7nev3pGjb/y5j CUrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=jZqpqHNnDrkVf5YnH4C4p2Du+MWFI+rsSboHjRikfo0=; b=UR+ZSK4dS8NShN+y2lpJeGBoZTfp7fIYIi3ll5tzV2i/RyAK8+uMUsRoIa/EKDBfyY /iXRZQFAqqRTJMVJfeZuPh9PCCJsQmhv4dPRayqh0g/zkorscLWfNtKPSmCaSda48Pbz q/MzN0QQjUELneSlUVIeDnmNh9LICOv4w/VHn+MurmzHwHdjjU7nMA7ZjvWalaSON+pf 19WCAgcTwkEaO9HXmOINX6rE1fgLmhB5AqgpBoU5DsD1kaqvuor5PTBVcdGbJ3wOFfnP IpZOF/Z3NvezaQ7gqPzy/MVHaS6cAlnAbhjF1QjX9fY5oqsggjL2LpFIsFlMNkUqjiSs hi/Q== X-Gm-Message-State: AO0yUKUpIlHEyXmC48a6W92GIFYRC5PL0pCvMbw2+LWFQLIvwT5IfLV4 XW7RWgmyi7in7YbnfcdAW92p0LNTHAk= X-Google-Smtp-Source: AK7set8UOj7NygywK+cGr/Rmvj7I4XEunDNhPQJfW5dsIVprbIkkXYFIqYFcViXFQ9A3GP588Pa1F52horE= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:90a:fa4b:b0:237:2106:a861 with SMTP id dt11-20020a17090afa4b00b002372106a861mr826705pjb.0.1677186745595; Thu, 23 Feb 2023 13:12:25 -0800 (PST) Date: Thu, 23 Feb 2023 13:12:24 -0800 In-Reply-To: Mime-Version: 1.0 References: <20230217041230.2417228-1-yuzhao@google.com> <20230217041230.2417228-2-yuzhao@google.com> Message-ID: Subject: Re: [PATCH mm-unstable v1 1/5] mm/kvm: add mmu_notifier_test_clear_young() From: Sean Christopherson To: Yu Zhao Cc: Andrew Morton , Paolo Bonzini , Jonathan Corbet , Michael Larabel , kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-mm@google.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230223_131227_289165_FFAFFC04 X-CRM114-Status: GOOD ( 20.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVGh1LCBGZWIgMjMsIDIwMjMsIFl1IFpoYW8gd3JvdGU6Cj4gT24gVGh1LCBGZWIgMjMsIDIw MjMgYXQgMTA6MTTigK9BTSBTZWFuIENocmlzdG9waGVyc29uIDxzZWFuamNAZ29vZ2xlLmNvbT4g d3JvdGU6Cj4gPgo+ID4gT24gVGh1LCBGZWIgMTYsIDIwMjMsIFl1IFpoYW8gd3JvdGU6Cj4gPiA+ IGRpZmYgLS1naXQgYS92aXJ0L2t2bS9rdm1fbWFpbi5jIGIvdmlydC9rdm0va3ZtX21haW4uYwo+ ID4gPiBpbmRleCA5YzYwMzg0YjVhZTAuLjFiNDY1ZGY0YTkzZCAxMDA2NDQKPiA+ID4gLS0tIGEv dmlydC9rdm0va3ZtX21haW4uYwo+ID4gPiArKysgYi92aXJ0L2t2bS9rdm1fbWFpbi5jCj4gPiA+ IEBAIC04NzUsNiArODc1LDYzIEBAIHN0YXRpYyBpbnQga3ZtX21tdV9ub3RpZmllcl9jbGVhcl95 b3VuZyhzdHJ1Y3QgbW11X25vdGlmaWVyICptbiwKPiA+ID4gICAgICAgcmV0dXJuIGt2bV9oYW5k bGVfaHZhX3JhbmdlX25vX2ZsdXNoKG1uLCBzdGFydCwgZW5kLCBrdm1fYWdlX2dmbik7Cj4gPiA+ ICB9Cj4gPiA+Cj4gPiA+ICtzdGF0aWMgYm9vbCBrdm1fdGVzdF9jbGVhcl95b3VuZyhzdHJ1Y3Qg a3ZtICprdm0sIHVuc2lnbmVkIGxvbmcgc3RhcnQsCj4gPiA+ICsgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICB1bnNpZ25lZCBsb25nIGVuZCwgdW5zaWduZWQgbG9uZyAqYml0bWFwKQo+ID4g PiArewo+ID4gPiArICAgICBpbnQgaTsKPiA+ID4gKyAgICAgaW50IGtleTsKPiA+ID4gKyAgICAg Ym9vbCBzdWNjZXNzID0gdHJ1ZTsKPiA+ID4gKwo+ID4gPiArICAgICB0cmFjZV9rdm1fYWdlX2h2 YShzdGFydCwgZW5kKTsKPiA+ID4gKwo+ID4gPiArICAgICBrZXkgPSBzcmN1X3JlYWRfbG9jaygm a3ZtLT5zcmN1KTsKPiA+ID4gKwo+ID4gPiArICAgICBmb3IgKGkgPSAwOyBpIDwgS1ZNX0FERFJF U1NfU1BBQ0VfTlVNOyBpKyspIHsKPiA+ID4gKyAgICAgICAgICAgICBzdHJ1Y3QgaW50ZXJ2YWxf dHJlZV9ub2RlICpub2RlOwo+ID4gPiArICAgICAgICAgICAgIHN0cnVjdCBrdm1fbWVtc2xvdHMg KnNsb3RzID0gX19rdm1fbWVtc2xvdHMoa3ZtLCBpKTsKPiA+ID4gKwo+ID4gPiArICAgICAgICAg ICAgIGt2bV9mb3JfZWFjaF9tZW1zbG90X2luX2h2YV9yYW5nZShub2RlLCBzbG90cywgc3RhcnQs IGVuZCAtIDEpIHsKPiA+ID4gKyAgICAgICAgICAgICAgICAgICAgIGdmbl90IGxzYl9nZm47Cj4g PiA+ICsgICAgICAgICAgICAgICAgICAgICB1bnNpZ25lZCBsb25nIGh2YV9zdGFydCwgaHZhX2Vu ZDsKPiA+ID4gKyAgICAgICAgICAgICAgICAgICAgIHN0cnVjdCBrdm1fZ2ZuX3JhbmdlIHJhbmdl ID0gewo+ID4gPiArICAgICAgICAgICAgICAgICAgICAgICAgICAgICAuc2xvdCA9IGNvbnRhaW5l cl9vZihub2RlLCBzdHJ1Y3Qga3ZtX21lbW9yeV9zbG90LAo+ID4gPiArICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBodmFfbm9kZVtzbG90cy0+bm9kZV9p ZHhdKSwKPiA+ID4gKyAgICAgICAgICAgICAgICAgICAgIH07Cj4gPiA+ICsKPiA+ID4gKyAgICAg ICAgICAgICAgICAgICAgIGh2YV9zdGFydCA9IG1heChzdGFydCwgcmFuZ2Uuc2xvdC0+dXNlcnNw YWNlX2FkZHIpOwo+ID4gPiArICAgICAgICAgICAgICAgICAgICAgaHZhX2VuZCA9IG1pbihlbmQg LSAxLCByYW5nZS5zbG90LT51c2Vyc3BhY2VfYWRkciArCj4gPiA+ICsgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgIHJhbmdlLnNsb3QtPm5wYWdlcyAqIFBBR0VfU0la RSAtIDEpOwo+ID4gPiArCj4gPiA+ICsgICAgICAgICAgICAgICAgICAgICByYW5nZS5zdGFydCA9 IGh2YV90b19nZm5fbWVtc2xvdChodmFfc3RhcnQsIHJhbmdlLnNsb3QpOwo+ID4gPiArICAgICAg ICAgICAgICAgICAgICAgcmFuZ2UuZW5kID0gaHZhX3RvX2dmbl9tZW1zbG90KGh2YV9lbmQsIHJh bmdlLnNsb3QpICsgMTsKPiA+ID4gKwo+ID4gPiArICAgICAgICAgICAgICAgICAgICAgaWYgKFdB Uk5fT05fT05DRShyYW5nZS5lbmQgPD0gcmFuZ2Uuc3RhcnQpKQo+ID4gPiArICAgICAgICAgICAg ICAgICAgICAgICAgICAgICBjb250aW51ZTsKPiA+Cj4gPiBFeHRlbmQgX19rdm1faGFuZGxlX2h2 YV9yYW5nZSgpIGluc3RlYWQgb2YgY29weS1wYXN0aW5nLiAgQXQgYSB2ZXJ5IHF1aWNrIGdsYW5j ZSwKPiA+IEkgYmVsaWV2ZSBhbGwgdGhhdCBpcyBuZWVkZWQgaXMgKG1pbnVzIHNhbml0eSBjaGVj a3MpOgo+IAo+IFllcywgd2lsbCBkby4KPiAKPiBJIGRvIG5lZWQgdG8gYWRkIG9uZSBtb3JlIHBh cmFtZXRlciB0byBrdm1fZ2ZuX3JhbmdlLCBiZWNhdXNlIHRoYXQncwo+IHdoYXQgdGhlIGN1cnJl bnQga3ZtX2FyY2hfdGVzdF9jbGVhcl95b3VuZygpIG5lZWRzLCBhc3N1bWluZyB0aGF0Cj4gZnVu Y3Rpb24gaXMgYWNjZXB0YWJsZS4KPiAKPiBBbHNvLCBqdXN0IGEgc2lkZSBub3RlLCBmcm9tIE1N J3MgUE9WLCB0aGUgZm9sbG93aW5nIGluCj4gX19rdm1faGFuZGxlX2h2YV9yYW5nZSgpIHNlZW1z IHRvIGZvcmdldCB0byBoYW5kbGUgZW5kID09IDAsIGlmIHRoYXQncwo+IHBvc3NpYmxlPwoKSXQn cyBoYW5kbGVkIGJ5IHRoZSBXQVJOX09OX09OQ0UoKSBhdCB0aGUgdmVyeSB0b3A6CgpzdGF0aWMg X19hbHdheXNfaW5saW5lIGludCBfX2t2bV9oYW5kbGVfaHZhX3JhbmdlKHN0cnVjdCBrdm0gKmt2 bSwKCQkJCQkJICBjb25zdCBzdHJ1Y3Qga3ZtX2h2YV9yYW5nZSAqcmFuZ2UpCnsKCWlmIChXQVJO X09OX09OQ0UocmFuZ2UtPmVuZCA8PSByYW5nZS0+c3RhcnQpKQoJCXJldHVybiAwOwoKCj4gCj4g ICBodmFfZW5kID0gbWluKHJhbmdlLT5lbmQsIHNsb3QtPnVzZXJzcGFjZV9hZGRyICsgKHNsb3Qt Pm5wYWdlcyA8PAo+IFBBR0VfU0hJRlQpKTsKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFy bS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK