From patchwork Mon Jul 26 15:35:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 12399981 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=-17.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 811FBC432BE for ; Mon, 26 Jul 2021 15:36:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2E6E660F6E for ; Mon, 26 Jul 2021 15:36:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2E6E660F6E 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 A0D8A8D0003; Mon, 26 Jul 2021 11:36:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 93CB18D0001; Mon, 26 Jul 2021 11:36:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7C3268D0008; Mon, 26 Jul 2021 11:36:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0042.hostedemail.com [216.40.44.42]) by kanga.kvack.org (Postfix) with ESMTP id 567178D0001 for ; Mon, 26 Jul 2021 11:36:00 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 046911F84B for ; Mon, 26 Jul 2021 15:36:00 +0000 (UTC) X-FDA: 78405139680.09.94E0768 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf14.hostedemail.com (Postfix) with ESMTP id A1B7C60019A2 for ; Mon, 26 Jul 2021 15:35:59 +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 E40DB60E08; Mon, 26 Jul 2021 15:35:58 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.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 1m82e5-001511-7e; Mon, 26 Jul 2021 16:35:57 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-mm@kvack.org Cc: Sean Christopherson , Matthew Wilcox , Paolo Bonzini , Will Deacon , Quentin Perret , James Morse , Suzuki K Poulose , Alexandru Elisei , kernel-team@android.com Subject: [PATCH v2 5/6] KVM: arm64: Use get_page() instead of kvm_get_pfn() Date: Mon, 26 Jul 2021 16:35:51 +0100 Message-Id: <20210726153552.1535838-6-maz@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 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-mm@kvack.org, seanjc@google.com, willy@infradead.org, pbonzini@redhat.com, will@kernel.org, qperret@google.com, james.morse@arm.com, suzuki.poulose@arm.com, alexandru.elisei@arm.com, kernel-team@android.com 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: rspam01 X-Rspamd-Queue-Id: A1B7C60019A2 Authentication-Results: imf14.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf14.hostedemail.com: domain of maz@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=maz@kernel.org X-Stat-Signature: 5yxbhxwh1dc75ww3g4rrfjk8sopjj1ng X-HE-Tag: 1627313759-251187 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: When mapping a THP, we are guaranteed that the page isn't reserved, and we can safely avoid the kvm_is_reserved_pfn() call. Replace kvm_get_pfn() with get_page(pfn_to_page()). Signed-off-by: Marc Zyngier --- arch/arm64/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index ebb28dd4f2c9..b303aa143592 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -840,7 +840,7 @@ transparent_hugepage_adjust(struct kvm *kvm, struct kvm_memory_slot *memslot, *ipap &= PMD_MASK; kvm_release_pfn_clean(pfn); pfn &= ~(PTRS_PER_PMD - 1); - kvm_get_pfn(pfn); + get_page(pfn_to_page(pfn)); *pfnp = pfn; return PMD_SIZE;