From nobody Fri Oct 3 02:14:54 2025 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 smtp.subspace.kernel.org (Postfix) with ESMTPS id 922A423CB for ; Mon, 8 Sep 2025 08:51:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757321507; cv=none; b=SBKIfNedWYD4vYw54wO2GFPn9eHOjRpxDtYLXR12aXGaKVNVbJcFvxRwdeNhl+/qOlWG+g3RM7EmoZr0NBtCL612UNFDvQ0lj7+MM+W9Srcu3sEBIfhNUU53fD7jq8m1DQE8ma5i/6KWf9kYAj+bx+dHS7ZDF0XnMa49Rqsperc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757321507; c=relaxed/simple; bh=sDEPpnLrs6YC8VPq9zlMrytA3P+7Pj4zyO6gg0438gU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=s1m7cFZZwzB4KSZijw8XIyPMOwloI2RbyuozFUvISor0xR7qz8EzlhELIk85NulooWa3F30gXaUNj7kALmeZxKZlwPGZ+SdPeaTcfd/jonb7vtzp7XQgchmM8Qmb8IIQJxeBtcyiXVIdH41+Tsd8nFi6T8SkdnoTr5CLXdNAElE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=M0iZ8/RW; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="M0iZ8/RW" Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5886TPKA022908; Mon, 8 Sep 2025 08:51:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=SPaCzwT5euVLX4cjSm1le8FJ8d4tv3xZCmtar6nGD 9I=; b=M0iZ8/RWVqekHf8NGa4h1ifYuqbnnWDSfCRAAYNhfbhFOO5YN02SNaSp0 aJsLYQiDyO0CUDLNEQHEZjWmZzCcDSSOYzkPGWRgWHTO/kWhP3mw8n3vP48YPA1g dTh1MhwIzsOBqMtmg6x52zSEpuQBJWZP6GsRZ8YxHCpghCEKevdKM0hDdIpZrnkU qzfR2k2E7vzrDggwwR7pBgf8Pc3mAx11iS+B8moo9/Vq8kzZig/3tVEtrq5divm0 0obd7BA9MFmAMAAMy2uy+66/vlKLVag64VjBe/Sti4JgOzgdeAyugexpToXS+L4S oufQkZF0EanLodYhnU0a7x/OcrK6A== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 490cff08gn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 08 Sep 2025 08:51:31 +0000 (GMT) Received: from m0360083.ppops.net (m0360083.ppops.net [127.0.0.1]) by pps.reinject (8.18.1.12/8.18.0.8) with ESMTP id 5888nGYG017220; Mon, 8 Sep 2025 08:51:31 GMT Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 490cff08g8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 08 Sep 2025 08:51:30 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 5886hc1c001156; Mon, 8 Sep 2025 08:51:30 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4912034wj9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 08 Sep 2025 08:51:29 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 5888pQ8d7537022 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 8 Sep 2025 08:51:26 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A68D2004E; Mon, 8 Sep 2025 08:51:26 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 557332004B; Mon, 8 Sep 2025 08:51:24 +0000 (GMT) Received: from aboo.in.ibm.com (unknown [9.109.247.181]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 8 Sep 2025 08:51:24 +0000 (GMT) From: Aboorva Devarajan To: maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Cc: mahesh@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, naveen@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] powerpc/powernv: Enable cpuidle state detection for POWER11 Date: Mon, 8 Sep 2025 14:21:23 +0530 Message-ID: <20250908085123.216780-1-aboorvad@linux.ibm.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: _nXOU51C7D55QJBEqtCChAahAfspMhHb X-Proofpoint-GUID: Q3yQJ3tYt9-jXTTWceHQM7L6tWaRn9xf X-Authority-Analysis: v=2.4 cv=EYDIQOmC c=1 sm=1 tr=0 ts=68be9913 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=yJojWOMRYYMA:10 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=88GbL-a48S0T7VR8CBkA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAyMCBTYWx0ZWRfX2C+frJyViY82 KOdntBRwLp5erZYWwLymNPpa2U/ahChCIzB3KRAIzkf/0TKIDpdNvO4PSFP9LYK+mPmpqmFMDX5 Qc6MGecwuIuFaC4ykhAAatz+BwHbX0SfCdbm7gv/GGE0Ls0VDyXyO18gU7c7XGrHcrK5llj6yKY K+3QCvXYDYZsjccLKo+xt689ai2JB6YixCWM0txwsEhR/0v9bNNkFwYphr/6/IAeRGdoJyv89T5 Ex6qdHrQ//xtWEn+EfX5Cq5VTmZ4BCPDq9fNGLJBOvEUfa8QGDYw+OGWgyDl4yUkcY1wHrJ0xHL MDwUKbOYefDkBEUr1CyCk2paG/vN8CfOdqjAoN5DwiU5+XxDl0+5+j5JOfNm5BAmnaS3bMRwdig BG5+PX9g X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-08_03,2025-09-08_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 suspectscore=0 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 clxscore=1011 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060020 Content-Type: text/plain; charset="utf-8" Extend cpuidle state detection to POWER11 by updating the PVR check. This ensures POWER11 correctly recognizes supported stop states, similar to POWER9 and POWER10. Without Patch: (Power11 - PowerNV systems) CPUidle driver: powernv_idle CPUidle governor: menu analyzing CPU 927: Number of idle states: 1 Available idle states: snooze snooze: Flags/Description: snooze Latency: 0 Usage: 251631 Duration: 207497715900 -- With Patch: (Power11 - PowerNV systems) CPUidle driver: powernv_idle CPUidle governor: menu analyzing CPU 959: Number of idle states: 4 Available idle states: snooze stop0_lite stop0 stop3 snooze: Flags/Description: snooze Latency: 0 Usage: 2 Duration: 33 stop0_lite: Flags/Description: stop0_lite Latency: 1 Usage: 1 Duration: 52 stop0: Flags/Description: stop0 Latency: 10 Usage: 13 Duration: 1920 stop3: Flags/Description: stop3 Latency: 45 Usage: 381 Duration: 21638478 Signed-off-by: Aboorva Devarajan --- v1: https://lore.kernel.org/all/20250421070718.162783-1-aboorvad@linux.ibm.= com/ v1 -> v2: Fixed overly permissive PVR version check as pointed out by Christophe. --- arch/powerpc/platforms/powernv/idle.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms= /powernv/idle.c index d98b933e4984..e4f4e907f6e3 100644 --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -1171,8 +1171,9 @@ static void __init pnv_arch300_idle_init(void) u64 max_residency_ns =3D 0; int i; =20 - /* stop is not really architected, we only have p9,p10 drivers */ - if (!pvr_version_is(PVR_POWER10) && !pvr_version_is(PVR_POWER9)) + /* stop is not really architected, we only have p9,p10 and p11 drivers */ + if (!pvr_version_is(PVR_POWER9) && !pvr_version_is(PVR_POWER10) && + !pvr_version_is(PVR_POWER11)) return; =20 /* @@ -1189,8 +1190,8 @@ static void __init pnv_arch300_idle_init(void) struct pnv_idle_states_t *state =3D &pnv_idle_states[i]; u64 psscr_rl =3D state->psscr_val & PSSCR_RL_MASK; =20 - /* No deep loss driver implemented for POWER10 yet */ - if (pvr_version_is(PVR_POWER10) && + /* No deep loss driver implemented for POWER10 and POWER11 yet */ + if ((pvr_version_is(PVR_POWER10) || pvr_version_is(PVR_POWER11)) && state->flags & (OPAL_PM_TIMEBASE_STOP|OPAL_PM_LOSE_FULL_CONTEXT)) continue; =20 --=20 2.47.1