From patchwork Thu Jan 30 13:25:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 11358051 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E3DD613B4 for ; Thu, 30 Jan 2020 13:29:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C09432467B for ; Thu, 30 Jan 2020 13:29:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580390967; bh=EHxBFcbcRclt2fmVZvlSdsfqC5iOved/jkw6NRwzA7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=LTF7IxITk+O8LDRABxcrdqQhdIq0Qumdbsq+YzNgIb+KcV7r9/BwTttjIEcZaHHUZ Tpzu0gjUnVVp7ukRkOVtP89dsw2wGkQrlzud018HdObMQSVkSXsZugbG/3h91DqZrU 3v9KiXW7E6s1v2B4h3WJEcFxabUHWGlxgP3/yeaQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727408AbgA3N30 (ORCPT ); Thu, 30 Jan 2020 08:29:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:48396 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727380AbgA3N30 (ORCPT ); Thu, 30 Jan 2020 08:29:26 -0500 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 5826821734; Thu, 30 Jan 2020 13:29:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580390965; bh=EHxBFcbcRclt2fmVZvlSdsfqC5iOved/jkw6NRwzA7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dxsdNL71Db27oyMCLb3Iooq+e+Fjz/IchvuLIbwXId8jIJPmgLChwJRUvfqvJYWfr eVrx8W0we/lPeJZ5US0zHnS2z3dspGpTlS3FLAR004ckNY2wuaFDX6CaQgtZUGwTqp TD40jjCfrFmj9kFlog0Ktt3izopWum3IFWhNIc5c= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ix9py-002BmW-GS; Thu, 30 Jan 2020 13:26:26 +0000 From: Marc Zyngier To: Paolo Bonzini Cc: Alexandru Elisei , Andrew Jones , Andrew Murray , Beata Michalska , Christoffer Dall , Eric Auger , Gavin Shan , Haibin Wang , James Morse , Mark Brown , Mark Rutland , Russell King , Shannon Zhao , Steven Price , Will Deacon , YueHaibing , Zenghui Yu , Julien Thierry , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH 16/23] KVM: arm/arm64: Fix young bit from mmu notifier Date: Thu, 30 Jan 2020 13:25:51 +0000 Message-Id: <20200130132558.10201-17-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200130132558.10201-1-maz@kernel.org> References: <20200130132558.10201-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, alexandru.elisei@arm.com, drjones@redhat.com, andrew.murray@arm.com, beata.michalska@linaro.org, christoffer.dall@arm.com, eric.auger@redhat.com, gshan@redhat.com, wanghaibin.wang@huawei.com, james.morse@arm.com, broonie@kernel.org, mark.rutland@arm.com, rmk+kernel@armlinux.org.uk, shannon.zhao@linux.alibaba.com, steven.price@arm.com, will@kernel.org, yuehaibing@huawei.com, yuzenghui@huawei.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Gavin Shan 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 --- virt/kvm/arm/mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index a4fa81d75e84..8a9db95d1e42 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -2144,7 +2144,8 @@ int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 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)