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 3C0DDC43219 for ; Thu, 19 May 2022 13:46:24 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D90824B45A; Thu, 19 May 2022 09:46:23 -0400 (EDT) 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 U2Q5zKSBglCQ; Thu, 19 May 2022 09:46:22 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id AE5C34B451; Thu, 19 May 2022 09:46:22 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B54584B3B8 for ; Thu, 19 May 2022 09:46:21 -0400 (EDT) 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 u9h5NQD6Aha7 for ; Thu, 19 May 2022 09:46:20 -0400 (EDT) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 049934B402 for ; Thu, 19 May 2022 09:46:20 -0400 (EDT) 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 7DF04617D7; Thu, 19 May 2022 13:46:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2E56C36AE3; Thu, 19 May 2022 13:46:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652967979; bh=B36GaRnGRujL+MHDMxoxbcIaaln4Kn+Z0GYJ4GdQl5g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g/cD/rpj+xe2AzYsja4gh8SJLDatcI9W6clm8PO0qstElAz/8qaq/DJmS1qfFiyTY SZ9d5rK+4KSZ4MdWaFdgHMlZNyBQl71XC/ZhqBRJJyZSjEfNWhRBIE4rsHV//YJqly agcpCwUC+8yYKpN63DB5DpNsWYIi+UH/rQ+M7vtGVMG8hjgwCK2vhWMw63Ubq+d7B1 gEdDkdBYB4AOvMBe05r2ST2rPp+sbdisS3rQVDf+AZpNh99DNpB1Gyw6u/JLuCyWxB 9SDet6wxT1EHJtRAV8toHQMYWGxDr4IhOezHOipLbuA2xYvILtTSCNwiMvCQftzW+8 dTtLc1xekzv5A== From: Will Deacon To: kvmarm@lists.cs.columbia.edu Subject: [PATCH 59/89] KVM: arm64: Do not support MTE for protected VMs Date: Thu, 19 May 2022 14:41:34 +0100 Message-Id: <20220519134204.5379-60-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220519134204.5379-1-will@kernel.org> References: <20220519134204.5379-1-will@kernel.org> MIME-Version: 1.0 Cc: Marc Zyngier , kernel-team@android.com, kvm@vger.kernel.org, Andy Lutomirski , linux-arm-kernel@lists.infradead.org, Michael Roth , Catalin Marinas , Chao Peng , Will Deacon 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: Fuad Tabba Return an error (-EINVAL) if trying to enable MTE on a protected vm. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/arm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 10e036bf06e3..8a1b4ba1dfa7 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -90,7 +90,9 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, break; case KVM_CAP_ARM_MTE: mutex_lock(&kvm->lock); - if (!system_supports_mte() || kvm->created_vcpus) { + if (!system_supports_mte() || + kvm_vm_is_protected(kvm) || + kvm->created_vcpus) { r = -EINVAL; } else { r = 0; -- 2.36.1.124.g0e6072fb45-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm