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Sat, 02 May 2020 11:23:53 +0000 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 042BNpGF52560330 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 2 May 2020 11:23:51 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 54EC97805E; Sat, 2 May 2020 11:23:51 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F27727805C; Sat, 2 May 2020 11:23:48 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.52.206]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Sat, 2 May 2020 11:23:48 +0000 (GMT) From: "Aneesh Kumar K.V" To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au Subject: [PATCH v2 22/28] powerpc/book3s64/hash/kuap: Enable kuap on hash Date: Sat, 2 May 2020 16:52:23 +0530 Message-Id: <20200502112229.545331-23-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200502112229.545331-1-aneesh.kumar@linux.ibm.com> References: <20200502112229.545331-1-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=2.50.10434:6.0.138, 18.0.676 definitions=2020-05-02_06:2020-05-01, 2020-05-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 mlxlogscore=944 clxscore=1015 malwarescore=0 phishscore=0 spamscore=0 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005020100 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" , linuxram@us.ibm.com, bauerman@linux.ibm.com, npiggin@gmail.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/mm/book3s64/pkeys.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c index 0f4fc2876fc8..e94585fad5c4 100644 --- a/arch/powerpc/mm/book3s64/pkeys.c +++ b/arch/powerpc/mm/book3s64/pkeys.c @@ -240,7 +240,12 @@ void __init setup_kuep(bool disabled) #ifdef CONFIG_PPC_KUAP void __init setup_kuap(bool disabled) { - if (disabled || !early_radix_enabled()) + if (disabled) + return; + /* + * On hash if PKEY feature is not enabled, disable KUAP too. + */ + if (!early_radix_enabled() && !early_mmu_has_feature(MMU_FTR_PKEY)) return; if (smp_processor_id() == boot_cpuid) { -- 2.26.2