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=-7.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 C6300C4338F for ; Mon, 2 Aug 2021 13:39:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 373DB610FE for ; Mon, 2 Aug 2021 13:39:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 373DB610FE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 966818D0001; Mon, 2 Aug 2021 09:39:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 915F16B0036; Mon, 2 Aug 2021 09:39:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 82C718D0001; Mon, 2 Aug 2021 09:39:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0238.hostedemail.com [216.40.44.238]) by kanga.kvack.org (Postfix) with ESMTP id 6B4DC6B0033 for ; Mon, 2 Aug 2021 09:39:58 -0400 (EDT) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 06CF91B653 for ; Mon, 2 Aug 2021 13:39:58 +0000 (UTC) X-FDA: 78430248876.18.FF570C1 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf24.hostedemail.com (Postfix) with ESMTP id 9E27FB00033F for ; Mon, 2 Aug 2021 13:39:57 +0000 (UTC) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CE75C60FC1; Mon, 2 Aug 2021 13:39:56 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=hot-poop.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mAYAc-002Sjn-RR; Mon, 02 Aug 2021 14:39:54 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, kvmarm@lists.cs.columbia.edu, Marc Zyngier Cc: Suzuki K Poulose , kernel-team@android.com, Paolo Bonzini , Quentin Perret , Alexandru Elisei , James Morse , Will Deacon , Sean Christopherson , Matthew Wilcox Subject: Re: [PATCH v2 0/6] KVM: Remove kvm_is_transparent_hugepage() and friends Date: Mon, 2 Aug 2021 14:39:51 +0100 Message-Id: <162791157466.3441503.3535158079584793741.b4-ty@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210726153552.1535838-1-maz@kernel.org> References: <20210726153552.1535838-1-maz@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, kvmarm@lists.cs.columbia.edu, maz@kernel.org, suzuki.poulose@arm.com, kernel-team@android.com, pbonzini@redhat.com, qperret@google.com, alexandru.elisei@arm.com, james.morse@arm.com, will@kernel.org, seanjc@google.com, willy@infradead.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9E27FB00033F Authentication-Results: imf24.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf24.hostedemail.com: domain of maz@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=maz@kernel.org X-Stat-Signature: k68atfcag9zego6yf3wytpqe5cjdnmqg X-HE-Tag: 1627911597-987125 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 26 Jul 2021 16:35:46 +0100, Marc Zyngier wrote: > A while ago, Willy and Sean pointed out[0] that arm64 is the last user > of kvm_is_transparent_hugepage(), and that there would actually be > some benefit in looking at the userspace mapping directly instead. >=20 > This small series does exactly that, although it doesn't try to > support more than a PMD-sized mapping yet for THPs. We could probably > look into unifying this with the huge PUD code, and there is still > some potential use of the contiguous hint. >=20 > [...] Applied to next, thanks! [1/6] KVM: arm64: Introduce helper to retrieve a PTE and its level commit: 63db506e07622c344a3c748a1c06293d48780f83 [2/6] KVM: arm64: Walk userspace page tables to compute the THP mapping s= ize commit: 6011cf68c88545e16cb32039c2cecfdae6a32315 [3/6] KVM: arm64: Avoid mapping size adjustment on permission fault commit: f2cc327303b13a70311e823bd52aa0bca8c7ddbc [4/6] KVM: Remove kvm_is_transparent_hugepage() and PageTransCompoundMap(= ) commit: 205d76ff0684a0b4fe3ff3a283d143a47439d191 [5/6] KVM: arm64: Use get_page() instead of kvm_get_pfn() commit: 0fe49630101b3ce23bd21a2788440ac719ec868a [6/6] KVM: Get rid of kvm_get_pfn() commit: 36c3ce6c0d03a6c9992c3359f879cdc70fde836a Cheers, M. --=20 Without deviation from the norm, progress is not possible.