From patchwork Mon Nov 26 20:11:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Breno Leitao X-Patchwork-Id: 1003449 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 433dQr36Xhz9ryk for ; Tue, 27 Nov 2018 07:13:40 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=debian.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 433dQr1YjJzDqbW for ; Tue, 27 Nov 2018 07:13:40 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=debian.org X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=debian.org (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=leitao@debian.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=debian.org 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 433dNw5bNYzDqWR for ; Tue, 27 Nov 2018 07:12:00 +1100 (AEDT) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wAQK8sqK103615 for ; Mon, 26 Nov 2018 15:11:58 -0500 Received: from e15.ny.us.ibm.com (e15.ny.us.ibm.com [129.33.205.205]) by mx0a-001b2d01.pphosted.com with ESMTP id 2p0q729bbd-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 26 Nov 2018 15:11:58 -0500 Received: from localhost by e15.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 26 Nov 2018 20:11:54 -0000 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp22033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wAQKBr8Q19071040 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 26 Nov 2018 20:11:54 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D450CAE05C; Mon, 26 Nov 2018 20:11:53 +0000 (GMT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A2A64AE05F; Mon, 26 Nov 2018 20:11:52 +0000 (GMT) Received: from debra.ibm.com (unknown [9.85.190.168]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP; Mon, 26 Nov 2018 20:11:52 +0000 (GMT) From: Breno Leitao To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/4] powerpc/tm: Save MSR to PACA before RFID Date: Mon, 26 Nov 2018 18:11:58 -0200 X-Mailer: git-send-email 1.8.3.1 X-TM-AS-GCONF: 00 x-cbid: 18112620-0068-0000-0000-000003673582 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010125; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000270; SDB=6.01123160; UDB=6.00583037; IPR=6.00903290; MB=3.00024341; MTD=3.00000008; XFM=3.00000015; UTC=2018-11-26 20:11:56 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18112620-0069-0000-0000-0000468E7206 Message-Id: <1543263121-9590-1-git-send-email-leitao@debian.org> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-11-26_15:, , 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 mlxscore=0 impostorscore=0 mlxlogscore=395 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811260172 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: Breno Leitao , mikey@neuling.org, gromero@linux.vnet.ibm.com Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" As other exit points, move SRR1 (MSR) into paca->tm_scratch, so, if there is a TM Bad Thing in RFID, it is easy to understand what was the SRR1 value being used. Signed-off-by: Breno Leitao --- arch/powerpc/kernel/entry_64.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 7b1693adff2a..ada1879a4e26 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -286,6 +286,10 @@ BEGIN_FTR_SECTION HMT_MEDIUM_LOW END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + std r8, PACATMSCRATCH(r13) +#endif + ld r13,GPR13(r1) /* only restore r13 if returning to usermode */ ld r2,GPR2(r1) ld r1,GPR1(r1)