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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 9214CC35240 for ; Thu, 30 Jan 2020 13:26:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6881720CC7 for ; Thu, 30 Jan 2020 13:26:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580390774; bh=zlVMJm7ZdL3zGtiLfAsUgIDE3Fn4F2HO34ea79xeAiE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Ou7YVHLTqh+a+wdzz07T/+a/hqGIbPAp8M39BsJAscW8S3ggdfpb4YsbfYHqL32az XfaUZXKeZFfiK6rZu9dhi5FVZkeTXAHU0pxX5sBCyC8Iv2r3iFckn5DDoG3sqZvj0S WdHVEpSlObApzeUrS0CR8sTxdsYH9283PLvW59qE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727321AbgA3N0N (ORCPT ); Thu, 30 Jan 2020 08:26:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:45640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727132AbgA3N0N (ORCPT ); Thu, 30 Jan 2020 08:26:13 -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 26C16214D8; Thu, 30 Jan 2020 13:26:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580390772; bh=zlVMJm7ZdL3zGtiLfAsUgIDE3Fn4F2HO34ea79xeAiE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VfaCcDRo7TLjbW0uCOTPMB7VEvd3nxQcQ7EMVJS24cz99EezgS7p+9gQ6N+eo6Rb+ 5Z3UxIg4ycWkJSlFUmlRl6Rz9ylm4EAgkjxvixBIOm+KY2n41ZCqjJnu/k7MtxHnU2 Pq+nRxnane8FtrooyxM7oMLNjLQVhzK5koyAgR94= 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 1ix9pi-002BmW-Ga; Thu, 30 Jan 2020 13:26:10 +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 03/23] KVM: arm/arm64: vgic: Handle GICR_PENDBASER.PTZ filed as RAZ Date: Thu, 30 Jan 2020 13:25:38 +0000 Message-Id: <20200130132558.10201-4-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 Content-Transfer-Encoding: 8bit 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: Zenghui Yu Although guest will hardly read and use the PTZ (Pending Table Zero) bit in GICR_PENDBASER, let us emulate the architecture strictly. As per IHI 0069E 9.11.30, PTZ field is WO, and reads as 0. Signed-off-by: Zenghui Yu Signed-off-by: Marc Zyngier Reviewed-by: Eric Auger Link: https://lore.kernel.org/r/20191220111833.1422-1-yuzenghui@huawei.com --- virt/kvm/arm/vgic/vgic-mmio-v3.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index 7dfd15dbb308..ebc218840fc2 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -414,8 +414,11 @@ static unsigned long vgic_mmio_read_pendbase(struct kvm_vcpu *vcpu, gpa_t addr, unsigned int len) { struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu; + u64 value = vgic_cpu->pendbaser; - return extract_bytes(vgic_cpu->pendbaser, addr & 7, len); + value &= ~GICR_PENDBASER_PTZ; + + return extract_bytes(value, addr & 7, len); } static void vgic_mmio_write_pendbase(struct kvm_vcpu *vcpu, -- 2.20.1