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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60D6AC2D0E4 for ; Fri, 27 Nov 2020 05:26:01 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6767C21D7F for ; Fri, 27 Nov 2020 05:26:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="YJxJNNzu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6767C21D7F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Cj34k15pszDsq3 for ; Fri, 27 Nov 2020 16:25:58 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=aneesh.kumar@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=YJxJNNzu; dkim-atps=neutral Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Cj2Fs1TqPzDrdc for ; Fri, 27 Nov 2020 15:48:48 +1100 (AEDT) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AR4WEW0009516; Thu, 26 Nov 2020 23:48:41 -0500 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=tgcKY61ZK3lI3QbRsh6tB4iAQyAqnP/oLwKZIT/v7nI=; b=YJxJNNzuH6Qi727/LkFDLa4o02tbQGUbRiKSKdZhg83MQ7TZe69pXrwJR1aXWdSOPP+z UGYPl6HxwwYG2g1dMSDL72gjMBduJ3vnnL2K17pcwm4rDq1F/NmMni3NzamNDZPKGgqa 9F6JMpejPLJ5Q9ButLg/U+15RyGygJXKQ6jNRyoZuSzYTYXSJc6ckTulER0BWla9LWCT DtQBmVO3aGGJNbm8kku7ipWDOzD/vdiPTWgCHUAPT+BqNOy/kSLfikzseIPM2cDPtnNH SdB3s54ajcDOHFntNKLaA8f9wHQKzvoUHQwpTaoDwUPPb/xSAphV3wFnzWpwQuM/YhJ9 XA== Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0a-001b2d01.pphosted.com with ESMTP id 352971s7ve-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 23:48:38 -0500 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0AR4hgmi012850; Fri, 27 Nov 2020 04:45:22 GMT Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by ppma02wdc.us.ibm.com with ESMTP id 34xth9kw9r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Nov 2020 04:45:22 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AR4jEfK13828402 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 27 Nov 2020 04:45:14 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8372B6E052; Fri, 27 Nov 2020 04:45:20 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 49FB96E04E; Fri, 27 Nov 2020 04:45:18 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.45.115]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 27 Nov 2020 04:45:17 +0000 (GMT) From: "Aneesh Kumar K.V" To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au Subject: [PATCH v7 17/22] powerpc/book3s64/kuap: Use Key 3 to implement KUAP with hash translation. Date: Fri, 27 Nov 2020 10:14:19 +0530 Message-Id: <20201127044424.40686-18-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201127044424.40686-1-aneesh.kumar@linux.ibm.com> References: <20201127044424.40686-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-27_01:2020-11-26, 2020-11-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 mlxscore=0 bulkscore=0 priorityscore=1501 suspectscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011270021 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Aneesh Kumar K.V" , Sandipan Das Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Radix use AMR Key 0 and hash translation use AMR key 3. Reviewed-by: Sandipan Das Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/book3s/64/kup.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/kup.h b/arch/powerpc/include/asm/book3s/64/kup.h index 5d6fceff1307..fca16585e49d 100644 --- a/arch/powerpc/include/asm/book3s/64/kup.h +++ b/arch/powerpc/include/asm/book3s/64/kup.h @@ -5,11 +5,10 @@ #include #include -#define AMR_KUAP_BLOCK_READ UL(0x4000000000000000) -#define AMR_KUAP_BLOCK_WRITE UL(0x8000000000000000) +#define AMR_KUAP_BLOCK_READ UL(0x5455555555555555) +#define AMR_KUAP_BLOCK_WRITE UL(0xa8aaaaaaaaaaaaaa) #define AMR_KUEP_BLOCKED (1UL << 62) #define AMR_KUAP_BLOCKED (AMR_KUAP_BLOCK_READ | AMR_KUAP_BLOCK_WRITE) -#define AMR_KUAP_SHIFT 62 #ifdef __ASSEMBLY__ @@ -62,8 +61,8 @@ #ifdef CONFIG_PPC_KUAP_DEBUG BEGIN_MMU_FTR_SECTION_NESTED(67) mfspr \gpr1, SPRN_AMR - li \gpr2, (AMR_KUAP_BLOCKED >> AMR_KUAP_SHIFT) - sldi \gpr2, \gpr2, AMR_KUAP_SHIFT + /* Prevent access to userspace using any key values */ + LOAD_REG_IMMEDIATE(\gpr2, AMR_KUAP_BLOCKED) 999: tdne \gpr1, \gpr2 EMIT_BUG_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE) END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_BOOK3S_KUAP, 67) -- 2.28.0