From patchwork Thu Jan 11 10:28:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Bader X-Patchwork-Id: 1885458 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com (client-ip=185.125.189.65; helo=lists.ubuntu.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=patchwork.ozlabs.org) Received: from lists.ubuntu.com (lists.ubuntu.com [185.125.189.65]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4T9grP6V4lz1yPw for ; Thu, 11 Jan 2024 21:29:09 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=lists.ubuntu.com) by lists.ubuntu.com with esmtp (Exim 4.86_2) (envelope-from ) id 1rNsJ3-0001Wy-1q; Thu, 11 Jan 2024 10:29:01 +0000 Received: from smtp-relay-canonical-0.internal ([10.131.114.83] helo=smtp-relay-canonical-0.canonical.com) by lists.ubuntu.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1rNsIw-0001Va-5E for kernel-team@lists.ubuntu.com; Thu, 11 Jan 2024 10:28:54 +0000 Received: from canonical.com (2.general.smb.uk.vpn [10.172.193.29]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-0.canonical.com (Postfix) with ESMTPSA id 4E372413BC for ; Thu, 11 Jan 2024 10:28:53 +0000 (UTC) From: Stefan Bader To: kernel-team@lists.ubuntu.com Subject: [PATCH 0/1][SRU M/N/U] Fix secure execution regression on s390x Date: Thu, 11 Jan 2024 11:28:51 +0100 Message-Id: <20240111102852.61596-1-stefan.bader@canonical.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" == SRU Justification == Impact: To allow secure execution the S390X_UV_UAPI driver is a critical requirement. For 22.04/Jammy LTS we backported the driver and enabled it as built-in. It seems 22.10/Kinetic also had this enabled. But then in later releases this option flipped back to 'n'. Fix: Turn this back on (built-in) in the annotation file. Note, this patch is made against Mantic. Noble and Unstable might need adjustments. Test case (on a s390x instance): #> cat /boot/config-$(uname -r) | grep UV_UAPI CONFIG_S390X_UV_UAPI=y Regression potential: If anything goes wrong, then likeliy within secure execution bounds. Stefan Bader (1): UBUNTU: [Config] Enable S390_UV_UAPI (built-in) debian.master/config/annotations | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Acked-by: Andrea Righi Acked-by: Roxana Nicolescu Acked-by: Andrei Gherzan