From patchwork Fri Sep 7 13:12:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoffer Dall X-Patchwork-Id: 10592209 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E593A5A4 for ; Fri, 7 Sep 2018 13:16:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D4F542B2DC for ; Fri, 7 Sep 2018 13:16:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C785B2B320; Fri, 7 Sep 2018 13:16:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4C37A2B2DC for ; Fri, 7 Sep 2018 13:16:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=l5Yp8ZUY8oFtlqXlLK3zYksIr4+J42vfLy9bTesfyto=; b=akd4MZZCxYdj0dQH7E9JCkVYVI FWMUWs/yeDI6//b8BGcRAAB/unNG802spHsrDfAU272CCFVDiFJHi8CnCOvsJYVzt0qjo2nqTm2pM 24qqFsVEDJFIss8esA0E9FEMWKQHzr5GLS1vHuqaf6foRr9Hf98ED1fNHbgy4diSe1NQxOaM78ZsB 4hxmD0X2EvqlPp5H3YpRVyAF1dq6GKJM0QvJDBoYKeNcYaDpEGRDAIzNTc/u4ZMi+hwzogNgxjUrb ZRvQkHXVDVWmQYAzL0gU6O5rlQnpPV304ZbLXo4Dh5lBPCgKSNjK6bCVofcWGEd5nVcWyPVRMmwDw t4FTnVpw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fyGaa-0006TL-Qp; Fri, 07 Sep 2018 13:14:20 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fyGZS-0005vc-IA for linux-arm-kernel@lists.infradead.org; Fri, 07 Sep 2018 13:13:15 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 69E0015BF; Fri, 7 Sep 2018 06:13:10 -0700 (PDT) Received: from localhost (e113682-lin.copenhagen.arm.com [10.32.144.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 007E13F557; Fri, 7 Sep 2018 06:13:09 -0700 (PDT) From: Christoffer Dall To: Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= Subject: [PULL RESEND v2 4/4] arm64: KVM: Remove pgd_lock Date: Fri, 7 Sep 2018 15:12:56 +0200 Message-Id: <20180907131256.2412-5-christoffer.dall@arm.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180907131256.2412-1-christoffer.dall@arm.com> References: <20180907131256.2412-1-christoffer.dall@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180907_061310_712352_B867AA29 X-CRM114-Status: GOOD ( 12.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, Christoffer Dall , Marc Zyngier , Alexander Graf , Steven Price , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Steven Price The lock has never been used and the page tables are protected by mmu_lock in struct kvm. Reviewed-by: Suzuki K Poulose Signed-off-by: Steven Price Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm64/include/asm/kvm_host.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 8e6d46df38aa..3d6d7336f871 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -61,8 +61,7 @@ struct kvm_arch { u64 vmid_gen; u32 vmid; - /* 1-level 2nd stage table and lock */ - spinlock_t pgd_lock; + /* 1-level 2nd stage table, protected by kvm->mmu_lock */ pgd_t *pgd; /* VTTBR value associated with above pgd and vmid */