From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZofMMAZIVtEVzzlN7RHUSE/U9opubrmUEuOwBTOP4vTOPR8s9FqmWihgdtY0blH/W7olXUu ARC-Seal: i=1; a=rsa-sha256; t=1525844154; cv=none; d=google.com; s=arc-20160816; b=wqatvYV4dQjdXymRXvemoVhnzcCkKLAMJackNrW3AcpEZc+/wL0jrFzxZ5O3fd5v/G w/cZp50PrJfhCVnHY9nlQDaKX3mNZgzY2Yq4FfvVB8HjoyzUk319SGq736g3dJNLKoF5 ebVGLY8wuU7OC6PpYfbSXWdTJzO+lWuSdmucQjMdFjafurY0Lj8ys5uxLqHj2E07/sHO xNUznmc6FIFl30j4IDPLaN0LOIAL4coNGqJpPyOXr1O3HFRxnEe6qh5hNqZIJHbyIgDj MXUzo+N/Sh4CsyfXgEHA0QGcJXLeB1/t4Q4c6R3b7atld2b0+MSFfRI6zGEYsnJMXu1l Awrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:content-transfer-encoding:message-id:references :in-reply-to:date:subject:cc:to:from:arc-authentication-results; bh=JSiedX9hDvHVmRAdYxij7LOEEFKNMF4eXGKumV4IDBw=; b=PR+GML6kXtcu6OYY+K8ZLTsO6glaIuXHOU/YQ2FVtd9wa65NZ9QzgDXEhArr92tSxr 1qiBVZhCXuhyTkMoBb4vj3M3Tfb4XDMGJGW1NIU9puYTAa1Esof2WENANcBGJo1YnOH+ Kr5ZYPPJ2CJpvxaSZ2UPjP1cd+T1tvuc1Ardxe7FPwwuRaToBGVBSwmFGWzXV9koqYnp yTjaAu7KOLP8OiDwB87dVxNaoViMWRieJzFguubkEUEHgzKz3yJCCG6LL/26X1nDTVpk kwnREZRJKASOaQixEUR41ySZcxrHDEow3EnzUUle/Lgsv/fhbmT14IXLCqeGJw/jD2Al +Q7w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of alastair@au1.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=alastair@au1.ibm.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=ibm.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of alastair@au1.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=alastair@au1.ibm.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=ibm.com From: "Alastair D'Silva" To: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, mikey@neuling.org, vaibhav@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, malat@debian.org, felix@linux.vnet.ibm.com, pombredanne@nexb.com, sukadev@linux.vnet.ibm.com, npiggin@gmail.com, gregkh@linuxfoundation.org, arnd@arndb.de, andrew.donnellan@au1.ibm.com, fbarrat@linux.vnet.ibm.com, corbet@lwn.net, "Alastair D'Silva" Subject: [PATCH v4 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Date: Wed, 9 May 2018 15:35:01 +1000 X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180509053506.9754-1-alastair@au1.ibm.com> References: <20180509004212.4506-1-alastair@au1.ibm.com> <20180509053506.9754-1-alastair@au1.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18050905-0008-0000-0000-000004F49F56 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18050905-0009-0000-0000-00001E88E4E3 Message-Id: <20180509053506.9754-3-alastair@au1.ibm.com> Content-Type: text/plain Content-Transfer-Encoding: 8bit MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-05-09_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1805090056 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1597957550458920157?= X-GMAIL-MSGID: =?utf-8?q?1599963560226069925?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Alastair D'Silva Switch the use of TIDR on it's CPU feature, rather than assuming it is available based on architecture. Signed-off-by: Alastair D'Silva --- arch/powerpc/kernel/process.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1237f13fed51..3b00da47699b 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1154,7 +1154,7 @@ static inline void restore_sprs(struct thread_struct *old_thread, mtspr(SPRN_TAR, new_thread->tar); } - if (cpu_has_feature(CPU_FTR_ARCH_300) && + if (cpu_has_feature(CPU_FTR_P9_TIDR) && old_thread->tidr != new_thread->tidr) mtspr(SPRN_TIDR, new_thread->tidr); #endif @@ -1570,7 +1570,7 @@ void clear_thread_tidr(struct task_struct *t) if (!t->thread.tidr) return; - if (!cpu_has_feature(CPU_FTR_ARCH_300)) { + if (!cpu_has_feature(CPU_FTR_P9_TIDR)) { WARN_ON_ONCE(1); return; } @@ -1593,7 +1593,7 @@ int set_thread_tidr(struct task_struct *t) { int rc; - if (!cpu_has_feature(CPU_FTR_ARCH_300)) + if (!cpu_has_feature(CPU_FTR_P9_TIDR)) return -EINVAL; if (t != current) -- 2.14.3