From nobody Sat Nov 30 01:30:10 2024 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 724FB1DA62B; Fri, 13 Sep 2024 13:05:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726232752; cv=none; b=E84oH0tOwFhjGbyRPbfksxSe3ef/kZQuj4xwrd/aQz9LTLJ1vqvHr/N/soNPHxnsUXDAu1Z7Ezj2Zm4fY9PuYAZmlXOomunu9mKefApXorC5czC6o+wh+WCChahd9WPRp7R9tu+Y7tcV5/uNcxhq5zStvc79cgDrEgFePsCsfNY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726232752; c=relaxed/simple; bh=ewIwlHsGLmz+83HdU8wNpYP0fBOT/s5U2JGtYZzcZ90=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=O0mtu84bCbadzIBG9qcQGyY6bRKVwaHsESHjX5SzPMOMRct8O1NUBpu8RcoJSA/F67rNG/jC2tp4I4PVHvPVSlZu4qYJj7tDBnZSOiWlNkHOPnlyMYJkFzxrMpPuO14SMG41Ytd8ObEvVjFKns8/MTaK71d4C9gsymHLtylEJ08= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=h22x0Xwa; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="h22x0Xwa" Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48DBIxfx006405; Fri, 13 Sep 2024 13:05:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=pp1; bh=5R8W6hZbVAmew KZX76CK+Ydz/RkbMlCfYBPDoaMlRD0=; b=h22x0XwaEgW5Pzv2CST2DHqV0tNTK MgixS3YlojOdCvEzhCAXUVCMOzHyEXMFdrISyUB2xznsFDKKWRSEUUrlwov4aQ6E ES7F9Qvixdpa0G9KFnMTjpQV7WpkRoU6KTcpjH9en3vIBDQjpyh+WYPGWBUB0dpn uLtwhfQqKYHd6pI6epB052KKNdIY1TreuiKvgQrLfw00wO6d8cj71XihcYe7xZPD dccdanMnsQBE6VNLpSQgQNvf6tELtwsQ39KUJMFxZ4sAnNDHMaSjKMVUTkXlS3+c ITyXkzvt1ZFf5/3sDZxSBN7sL14/VHA8X0lLymfCLFvsktfXamAkposiw== Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 41geg01ugf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Sep 2024 13:05:48 +0000 (GMT) Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 48DCpAs7013465; Fri, 13 Sep 2024 13:05:48 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 41h3cmp1fy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Sep 2024 13:05:48 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 48DD5iDs43778536 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Sep 2024 13:05:45 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D9E8120040; Fri, 13 Sep 2024 13:05:44 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 896AE2004B; Fri, 13 Sep 2024 13:05:44 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 13 Sep 2024 13:05:44 +0000 (GMT) From: Heiko Carstens To: "Jason A . Donenfeld" Cc: Alexander Gordeev , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Harald Freudenberger , Stefan Liebler , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 1/7] s390/facility: Disable compile time optimization for decompressor code Date: Fri, 13 Sep 2024 15:05:37 +0200 Message-ID: <20240913130544.2398678-2-hca@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240913130544.2398678-1-hca@linux.ibm.com> References: <20240913130544.2398678-1-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: hYx6rSQVGViTaEbWbHnYUK-J20iR-Mhx X-Proofpoint-ORIG-GUID: hYx6rSQVGViTaEbWbHnYUK-J20iR-Mhx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-13_09,2024-09-13_02,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 lowpriorityscore=0 suspectscore=0 mlxlogscore=570 priorityscore=1501 adultscore=0 clxscore=1011 spamscore=0 bulkscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409130087 Content-Type: text/plain; charset="utf-8" Disable compile time optimizations of test_facility() for the decompressor. The decompressor should not contain any optimized code depending on the architecture level set the kernel image is compiled for to avoid unexpected operation exceptions. Add a __DECOMPRESSOR check to test_facility() to enforce that facilities are always checked during runtime for the decompressor. Reviewed-by: Sven Schnelle Signed-off-by: Heiko Carstens --- arch/s390/include/asm/facility.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facil= ity.h index b7d234838a36..65ebf86506cd 100644 --- a/arch/s390/include/asm/facility.h +++ b/arch/s390/include/asm/facility.h @@ -59,8 +59,10 @@ static inline int test_facility(unsigned long nr) unsigned long facilities_als[] =3D { FACILITIES_ALS }; =20 if (__builtin_constant_p(nr) && nr < sizeof(facilities_als) * 8) { - if (__test_facility(nr, &facilities_als)) - return 1; + if (__test_facility(nr, &facilities_als)) { + if (!__is_defined(__DECOMPRESSOR)) + return 1; + } } return __test_facility(nr, &stfle_fac_list); } --=20 2.43.0