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 mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7C5DC433EF for ; Fri, 28 Jan 2022 12:20:34 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 467C64B1A3; Fri, 28 Jan 2022 07:20:34 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@kernel.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xuUU2GWj6REv; Fri, 28 Jan 2022 07:20:33 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 0DAF14B15E; Fri, 28 Jan 2022 07:20:33 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id ABAB24B137 for ; Fri, 28 Jan 2022 07:20:31 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Lia1vR-CPwHx for ; Fri, 28 Jan 2022 07:20:30 -0500 (EST) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 8F2FC4B165 for ; Fri, 28 Jan 2022 07:20:30 -0500 (EST) 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 3CEE2B824CA; Fri, 28 Jan 2022 12:20:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E88D0C340E6; Fri, 28 Jan 2022 12:20:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643372427; bh=wqhIZcZjCG8ZfdU+M+zw1+wAN8pkiQnHo3bZ8MRkd1A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TWBKEwmbKzmg+AyQVAIAs02Hbepoq6KRYqcYTf8tlAnlurmpE2zZwdqdjc1USPzhx D18H5QKygJGwxuwnjgLbRPFMEZz8CI57bvOp3AKY9V4hlHL9dk6sCj0bFY0ppxYj1T EjuaqSaIrdIPCUobpBl99dCAd2QUn86fygFKUesFtwwSp6NazrJ5OCgSh/4OgyQOt9 hGqTRloYDD+sQ09QyQ+iPhYi/aj+8CrtAMyT7KKJPbrxi50k8q6h6GPfCoYfMMeTzO Um2krxSC3cYAs/c+UVN9tYeDbq2zjJLdYSOHcS0WWPUheY58otKXvPHbXWEgOMItcE tkeOpYHGyAyXg== Received: from sofa.misterjones.org ([185.219.108.64] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nDQE5-003njR-AT; Fri, 28 Jan 2022 12:19:37 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH v6 25/64] KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings Date: Fri, 28 Jan 2022 12:18:33 +0000 Message-Id: <20220128121912.509006-26-maz@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220128121912.509006-1-maz@kernel.org> References: <20220128121912.509006-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com, christoffer.dall@arm.com, jintack@cs.columbia.edu, haibo.xu@linaro.org, gankulkarni@os.amperecomputing.com, chase.conklin@arm.com, linux@armlinux.org.uk, james.morse@arm.com, suzuki.poulose@arm.com, alexandru.elisei@arm.com, karl.heubaum@oracle.com, mihai.carabas@oracle.com, miguel.luis@oracle.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: kernel-team@android.com, Andre Przywara , Christoffer Dall , Chase Conklin , "Russell King \(Oracle\)" , mihai.carabas@oracle.com, Ganapatrao Kulkarni X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu 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. 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 ccd063d6cb69..edaf287c7ec9 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -351,6 +351,13 @@ 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); -- 2.30.2 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm