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 16E84C43219 for ; Fri, 28 Jan 2022 12:19:35 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B53084B093; Fri, 28 Jan 2022 07:19:34 -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 y5xXvUR2eIzT; Fri, 28 Jan 2022 07:19:33 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B29094B0D9; Fri, 28 Jan 2022 07:19:30 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id ED37D49EF4 for ; Fri, 28 Jan 2022 07:19:29 -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 kcdJIvoRrgVg for ; Fri, 28 Jan 2022 07:19:28 -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 A94A149EE4 for ; Fri, 28 Jan 2022 07:19:28 -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 DC88B61B08; Fri, 28 Jan 2022 12:19:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BE22C340EC; Fri, 28 Jan 2022 12:19:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643372367; bh=eSHMfCtlG9/eKcTytQXUffd7g23LpijxWnNA6uVZFH8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O8x5jcL6nw7vLGKGb4a/ybnRcp4dCplrQiHQ0rOHlY3RD5KKYW0copjflmEQb5fWO YngSjdNiOA0na7aZ+DvQZVn4/Lrlb6BygDaijGqjIyJ/Fwz0gaMcEmU1xSJn7qDBpE FPGjEV9pIokA1CGg3A6cEVVfax6bYuptfBzPhhoODRyn/vYNj4fBcQfa9+I4FnUyk1 v/jHfEOXPWenUkBFvEP/t91+hNrIPDXvs7owZh2kzb7WkDAtEXJjoQ1zmKwkkdRYGT Has7sktCy2uZfaE2NwBmnblLcDAeN2gn/adUS9Fu6tU405iwsRiA4JcSCCbzmBJJvc GLhwIJqxgDSeg== 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 1nDQDt-003njR-AW; Fri, 28 Jan 2022 12:19:25 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH v6 04/64] KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x Date: Fri, 28 Jan 2022 12:18:12 +0000 Message-Id: <20220128121912.509006-5-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: Christoffer Dall We were not allowing userspace to set a more privileged mode for the VCPU than EL1, but we should allow this when nested virtualization is enabled for the VCPU. Reviewed-by: Russell King (Oracle) Signed-off-by: Christoffer Dall Signed-off-by: Marc Zyngier --- arch/arm64/kvm/guest.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index e116c7767730..db6209622be9 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include "trace.h" @@ -259,6 +260,11 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) if (vcpu_el1_is_32bit(vcpu)) return -EINVAL; break; + case PSR_MODE_EL2h: + case PSR_MODE_EL2t: + if (vcpu_el1_is_32bit(vcpu) || !vcpu_has_nv(vcpu)) + return -EINVAL; + break; default: err = -EINVAL; goto out; -- 2.30.2 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm