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 6D66FC433F5 for ; Fri, 28 Jan 2022 12:50:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 209B34B1FE; Fri, 28 Jan 2022 07:50:54 -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 bbPm51hm6H5N; Fri, 28 Jan 2022 07:50:53 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 87FB049F20; Fri, 28 Jan 2022 07:50:52 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E06454B1CA for ; Fri, 28 Jan 2022 07:50:50 -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 lThwCl55rtvY for ; Fri, 28 Jan 2022 07:50:49 -0500 (EST) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id BD37049F28 for ; Fri, 28 Jan 2022 07:50:49 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 2295F61B47; Fri, 28 Jan 2022 12:50:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A2FFC340E6; Fri, 28 Jan 2022 12:50:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643374248; bh=YXTrt+jPSm3H5jzqHNqD4s3HXxglcr2tbEknzYDr2H4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gsAl7GT9DvJrCqa+RSkOs6V94TVIZ6tDLXOPXEjPYU8Ei8Y5a3x+Jqt1rwA8Gw7hX gMqGuHxrawYlb8B5CFv0gQGsc+NuUzctQNQ+WUS8CEPkn9TrRF9HB6Mrs/wkNoIKCP AKcbRPciVTAlo+nZkuDvOURZQYs9J5nljVioSjN5HJ0i144hE+qJIqbxSBxjr+2aRR h5vMF7WNXSc7sp3uQwe9XtWSO2QjOP+qXiYvdyPO1sGpG5LAQZJ+xxMlAYIsR4S0RN /HS/zZlXReBQPVF92Jt46DuMvEWR6q7IajuXscHMjHRqc3uSdhLcm748yj6xEN/ByJ /OL+qUz4UvOMg== 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 1nDQEN-003njR-Ja; Fri, 28 Jan 2022 12:19:56 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH v6 42/64] KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's Date: Fri, 28 Jan 2022 12:18:50 +0000 Message-Id: <20220128121912.509006-43-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 When entering a L2 guest (nested virt enabled, but not in hypervisor context), we need to honor the traps the L1 guest has asked enabled. For now, just OR the guest's HCR_EL2 into the host's. We may have to do some filtering in the future though. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/hyp/vhe/switch.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c index 0e164cc8e913..5e8eafac27c6 100644 --- a/arch/arm64/kvm/hyp/vhe/switch.c +++ b/arch/arm64/kvm/hyp/vhe/switch.c @@ -78,6 +78,11 @@ static void __activate_traps(struct kvm_vcpu *vcpu) if (!vcpu_el2_tge_is_set(vcpu)) hcr |= HCR_AT | HCR_TTLB; } + } else if (vcpu_has_nv(vcpu)) { + u64 vhcr_el2 = __vcpu_sys_reg(vcpu, HCR_EL2); + + vhcr_el2 &= ~HCR_GUEST_NV_FILTER_FLAGS; + hcr |= vhcr_el2; } ___activate_traps(vcpu, hcr); -- 2.30.2 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm