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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4F88C636CC for ; Tue, 31 Jan 2023 10:21:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hO7HGrm5ZuV2TwI+JJlo9Q50zI/dOVz2Edgp1EHg7Ok=; b=vDOx0o4IG7L+bu JeRXY1CKhXtXJTXd4Xl6cKjRhKfsCjibYhqJ1oj9ZRnnnhB6/uxQn0e9cpWY8XrNsBIkim07cAUBI HF+dc2E76fySNw/BzQ4VO2ygQVks9AvzaC34AzoH+0l9RXoMu9l2vfi12d7RpXNAubeIsbm4LpPBg fCJxDd+phG5z7AvOqSyicEbIORS2goNkdD3Tms8Hb9WHhCPH20qlht8dpC5DriKzQTlB1qutRLe5K mQiMwsxZLk8WSLHLbGnhT7kqNwwLTo91XSWXSQc26TmuQb8bZWYqclwyu37TnVgDD9nAoiDvQXcEX Z0SNqp5hr5ByDLR8+WvA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMnkm-007M51-1s; Tue, 31 Jan 2023 10:20:40 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMnA5-0075oU-BM for linux-arm-kernel@lists.infradead.org; Tue, 31 Jan 2023 09:42:46 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id DB463B81AB2; Tue, 31 Jan 2023 09:42:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F488C433A1; Tue, 31 Jan 2023 09:42:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675158162; bh=h1J6OM3LavEJHyI9EDArAeIgKAt25X6tuhGyuMdntGg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lMXT0eNAcMcouv79m9l0sidh0hY/YEhh6SR+OViOmkA+w2oDhDYdlCXg/cSb0xJiI iQPQvxspCZSxjoim3dyVisBznrcjXqn7fMsbvK++mQnrq56KurpeMY83fLT0w+Akqd DSpccikrNmm9u/3wvFqIjE2ZTCMJCZDq9yNAX0AHl+SYfn8AHLMF7j6Qx7HVz2ybcz 9VoZ/wz/wbhgIOQkak4XKdBaM4NYIrkf0XWUf9GTzNYWbPLFiV8arEtQ9vsmXsciEc 0kkXXMDVqcLVKYtVvgsqoFT7OVIuMV4LQ4cXSCW4QBWLsi6j0X66mghHUIjdV/IyYK Gd4GHIZkD5ASQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pMmtU-0067U2-Nq; Tue, 31 Jan 2023 09:25:36 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Alexandru Elisei , Andre Przywara , Chase Conklin , Christoffer Dall , Ganapatrao Kulkarni , Jintack Lim , Russell King , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH v8 26/69] KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings Date: Tue, 31 Jan 2023 09:24:21 +0000 Message-Id: <20230131092504.2880505-27-maz@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230131092504.2880505-1-maz@kernel.org> References: <20230131092504.2880505-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alexandru.elisei@arm.com, andre.przywara@arm.com, chase.conklin@arm.com, christoffer.dall@arm.com, gankulkarni@os.amperecomputing.com, jintack@cs.columbia.edu, rmk+kernel@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230131_014245_576944_076579DA X-CRM114-Status: GOOD ( 12.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jintack Lim Forward the EL1 virtual memory register traps to the virtual EL2 if they are not coming from the virtual EL2 and the virtual HCR_EL2.TVM or TRVM bit is set. This is for recursive nested virtualization. Reviewed-by: Alexandru Elisei Signed-off-by: Jintack Lim Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 58c0c0eed28b..35ed217e39d8 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -420,6 +420,13 @@ static bool access_vm_reg(struct kvm_vcpu *vcpu, if (el12_reg(p) && forward_nv_traps(vcpu)) return false; + if (!el12_reg(p)) { + u64 bit = p->is_write ? HCR_TVM : HCR_TRVM; + + if (forward_traps(vcpu, bit)) + return false; + } + /* We don't expect TRVM on the host */ BUG_ON(!vcpu_is_el2(vcpu) && !p->is_write); -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel