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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 9DE55C2BA83 for ; Thu, 13 Feb 2020 15:48:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 68EE020661 for ; Thu, 13 Feb 2020 15:48:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581608924; bh=uEqBD+pRryWe/jG4/xFJ/zSOq1zd6Fja6rU94sP9RLU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yvXaGzgNtQ1mlloyErAB6AxdmQQmnT5CL5bNntCc/KhPIATXkqIhCGyac+zWrtX5+ 2/OjsfQ7eW6pPuWRufWpZ9IKyHQKIL+lj6ivA1EOYI8xitwzCxgZeXGXfAjUJ5z1e6 i+HsPbho+jpau0JdkVAwqpsprme2W+nfyu4aY9MA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729272AbgBMP0w (ORCPT ); Thu, 13 Feb 2020 10:26:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:47398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729268AbgBMP0v (ORCPT ); Thu, 13 Feb 2020 10:26:51 -0500 Received: from localhost (unknown [104.132.1.104]) (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 2134A222C2; Thu, 13 Feb 2020 15:26:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581607611; bh=uEqBD+pRryWe/jG4/xFJ/zSOq1zd6Fja6rU94sP9RLU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BqEluBXNDvUn3XVMp3Q9b/tjk66hcFWY+1Dh9+1Ii8ds18y+8xrr/p4vXYxg4m5V/ 6Or2mnZoFqvs8Uoj5kgwD/TKRhNdlWukAhfGF4jNKqerVltThPjxue/oKmQdMT1dxX 1P/twHa5LQMX/CjQgnnhoLJqM7qmm+g6RNUO3zI0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gavin Shan , Marc Zyngier Subject: [PATCH 4.19 36/52] KVM: arm/arm64: Fix young bit from mmu notifier Date: Thu, 13 Feb 2020 07:21:17 -0800 Message-Id: <20200213151825.176692550@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200213151810.331796857@linuxfoundation.org> References: <20200213151810.331796857@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Gavin Shan commit cf2d23e0bac9f6b5cd1cba8898f5f05ead40e530 upstream. kvm_test_age_hva() is called upon mmu_notifier_test_young(), but wrong address range has been passed to handle_hva_to_gpa(). With the wrong address range, no young bits will be checked in handle_hva_to_gpa(). It means zero is always returned from mmu_notifier_test_young(). This fixes the issue by passing correct address range to the underly function handle_hva_to_gpa(), so that the hardware young (access) bit will be visited. Fixes: 35307b9a5f7e ("arm/arm64: KVM: Implement Stage-2 page aging") Signed-off-by: Gavin Shan Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20200121055659.19560-1-gshan@redhat.com Signed-off-by: Greg Kroah-Hartman --- virt/kvm/arm/mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -1925,7 +1925,8 @@ int kvm_test_age_hva(struct kvm *kvm, un if (!kvm->arch.pgd) return 0; trace_kvm_test_age_hva(hva); - return handle_hva_to_gpa(kvm, hva, hva, kvm_test_age_hva_handler, NULL); + return handle_hva_to_gpa(kvm, hva, hva + PAGE_SIZE, + kvm_test_age_hva_handler, NULL); } void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu)