From patchwork Wed Mar 13 04:21:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rohan McLure X-Patchwork-Id: 13590970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9CDFC54E58 for ; Wed, 13 Mar 2024 04:21:52 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 326ED94000F; Wed, 13 Mar 2024 00:21:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 22B59940009; Wed, 13 Mar 2024 00:21:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E11E494000F; Wed, 13 Mar 2024 00:21:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id C20346B0285 for ; Wed, 13 Mar 2024 00:21:50 -0400 (EDT) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id EB886A101A for ; Wed, 13 Mar 2024 04:21:49 +0000 (UTC) X-FDA: 81890717538.17.1038A41 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf04.hostedemail.com (Postfix) with ESMTP id B87C940008 for ; Wed, 13 Mar 2024 04:21:47 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b="Q/sDylFY"; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf04.hostedemail.com: domain of rmclure@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=rmclure@linux.ibm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1710303707; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=NwDxv2/kk0Wevg4/3WD/DNtMwUwbkOgYM+7B04niIB0=; b=hl6Rmi8rjOdBh/1xjyvS3MyFTfbi14IIiAfcW0ZvZtGhVes6jtx42dMynUIyL3cHQJw8qR N/xXn/jxfGEprzhNiI6b1ODhaq3vOPQc/CZ125Cle13Ds00WkQLFoT6iKdp+YO/qQAlW8p mmB64rDYM3fOTs9gedkdnMsCYJvfI80= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b="Q/sDylFY"; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf04.hostedemail.com: domain of rmclure@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=rmclure@linux.ibm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1710303707; a=rsa-sha256; cv=none; b=nJGbYv5XuMQ9OgaVcaimNvtIJKnkC1lhz0tBnzRu2SFICwURNiXtR/l6OWKSs4BNTMmPCq KBWHEIcs2dwueRBjasZG2DxdGha6aJ8x4TwPeExsIjaF7wTzvHZ9jwEHr3PpQKFuosY7td 9rdGjOJt5v1l6d3HKZeCdxjPN3iQUfI= Received: from pps.filterd (m0353726.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 42D45MIn023220; Wed, 13 Mar 2024 04:21:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=NwDxv2/kk0Wevg4/3WD/DNtMwUwbkOgYM+7B04niIB0=; b=Q/sDylFYLw9nJzGHwn4aWzsFfQUMyQnowyhYED9C+CRF6xTgn/cmsYRMtwKdyPUGU/cm tkZ6Xr8iLOO3pZQfYpvYfjsOifdr6/aC9uZ4qCnmF5pq+x3uzqjPgp0gc3fGRaWpkvR5 IoJKQjAStpBTVj59I3MpHiBp7vqHA11Wf8PRsKGPUBupsb6mr8yxN7SYa6GrxwiEHlws dp42msZFAJgPllIkxTdw5YLPZ9skZmCKf7AYAW/C07g2Z9MHb0MFhFUhcZjTB1Dxnwzv olir7FcFY7ZQZW3m3rfowDBRFBFEx9HN2UKKpyltO7yBNgUvysJb3Psv6topBA2OoRHn BQ== Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wu4t2r5rw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Mar 2024 04:21:36 +0000 Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 42D3Bm57014995; Wed, 13 Mar 2024 04:21:35 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3ws33nuhck-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Mar 2024 04:21:35 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 42D4LVih42139958 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 13 Mar 2024 04:21:33 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9F3522004B; Wed, 13 Mar 2024 04:21:31 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E55B2004D; Wed, 13 Mar 2024 04:21:31 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 13 Mar 2024 04:21:31 +0000 (GMT) Received: from socotra.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 28AD560428; Wed, 13 Mar 2024 15:21:26 +1100 (AEDT) From: Rohan McLure To: linuxppc-dev@lists.ozlabs.org Cc: Rohan McLure , mpe@ellerman.id.au, christophe.leroy@csgroup.eu, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org Subject: [PATCH v10 09/12] powerpc: mm: Add common pud_pfn stub for all platforms Date: Wed, 13 Mar 2024 15:21:14 +1100 Message-ID: <20240313042118.230397-10-rmclure@linux.ibm.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240313042118.230397-1-rmclure@linux.ibm.com> References: <20240313042118.230397-1-rmclure@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: c3rfO2Rq7L09ELQ2w7PzYl_irYuSRWno X-Proofpoint-ORIG-GUID: c3rfO2Rq7L09ELQ2w7PzYl_irYuSRWno X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-13_04,2024-03-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 clxscore=1015 suspectscore=0 spamscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=857 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2403130030 X-Rspamd-Queue-Id: B87C940008 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: du688n4qq65tfsxnjo3hduz8msdhk53z X-HE-Tag: 1710303707-912338 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Prior to this commit, pud_pfn was implemented with BUILD_BUG as the inline function for 64-bit Book3S systems but is never included, as its invocations in generic code are guarded by calls to pud_devmap which return zero on such systems. A future patch will provide support for page table checks, the generic code for which depends on a pud_pfn stub being implemented, even while the patch will not interact with puds directly. Remove the 64-bit Book3S stub and define pud_pfn to warn on all platforms. pud_pfn may be defined properly on a per-platform basis should it grow real usages in future. Signed-off-by: Rohan McLure --- arch/powerpc/include/asm/pgtable.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 0c0ffbe7a3b5..13f661831333 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -213,6 +213,20 @@ static inline bool arch_supports_memmap_on_memory(unsigned long vmemmap_size) #endif /* CONFIG_PPC64 */ +/* + * Currently only consumed by page_table_check_pud_{set,clear}. Since clears + * and sets to page table entries at any level are done through + * page_table_check_pte_{set,clear}, provide stub implementation. + */ +#ifndef pud_pfn +#define pud_pfn pud_pfn +static inline int pud_pfn(pud_t pud) +{ + WARN_ONCE(1, "pud: platform does not use pud entries directly"); + return 0; +} +#endif + #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_PGTABLE_H */