From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx49eQk0jhiGHfqZZIQIFqlp8cMhSfyS41nzagkkOlBw6iquj5sZHExyxT7jMkijapKXJp052 ARC-Seal: i=1; a=rsa-sha256; t=1524013868; cv=none; d=google.com; s=arc-20160816; b=apk4lIg2DdAPQUL4rb8gL/GX91WabRd/60KhMiFdBUOQa2Xt7EdP8j6kSSenKl+rSV GPEmy+tC5FFN6fPbE9f0pZI/evmnLj3skb95rDIZJdI28bajk/tIZAL/bKxn30M17f5w bhbaJ1B9MYczDRjbLzhLbwf8/NZpRP6Eg1npW6GaaiY7cYIJ7JgI6qaVYRdq9E9NS2P9 na8qipLDkeTRDnSD9+A8ESfv+jOBKJOPMCVhuBEo1HZxNwAPypvtbcS2Uro+X2pVw3+v lhyM2wiLV8KLNjXS/dtbIVktH//JqxnSxfE7vF7ZbAuW1zrLYNCQ1Xa110W5nwvoOxiZ gGzg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:references:in-reply-to:date:subject:cc:to:from :arc-authentication-results; bh=JSiedX9hDvHVmRAdYxij7LOEEFKNMF4eXGKumV4IDBw=; b=Wbnhq35ZOYvmSsl/0cGeuIeGXh8X6GgOWPXpxUjHcAYZxwcY6RBTmDYzQsZxJDBVCe ph8nmzjNuzT9OFCMGC6o4/FRLauKnTk3yA4Mawt3CH9SfhKr4zNJns0P+LBeduqt7OuJ 62cftuVWWYjF2XgFyi/2+IWeh3+6ypWBoBo4T7VsOz79sdtKPljlNbJDmBrxdtCFgolJ 5kNMGJ60ZrxNZdalCOtx2AbegjEM9kUYTe+51BDrLA3uXU3NIpFpX0J47dBNkOG0ZXZd Je3skTEu9EMJaqT5iKcovLJOccuo+b4sLTC6Yfdq88h8bRkQ9AXbnSA/UKwGsxRDMEXQ DlnQ== 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 v2 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation Date: Wed, 18 Apr 2018 11:08:05 +1000 X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180418010810.30937-1-alastair@au1.ibm.com> References: <20180417020950.21446-1-alastair@au1.ibm.com> <20180418010810.30937-1-alastair@au1.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18041801-0020-0000-0000-0000041312D4 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18041801-0021-0000-0000-000042A7556F Message-Id: <20180418010810.30937-3-alastair@au1.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-04-17_13:,, 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-1804180008 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1597957550458920157?= X-GMAIL-MSGID: =?utf-8?q?1598044366721167318?= 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