From nobody Wed Oct 8 21:08:38 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 028E421322B for ; Wed, 25 Jun 2025 07:32:03 +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=1750836725; cv=none; b=be5lQCoH43SP62SoPBaGQNJEPVSQeHD8d1FXDY4mp9lSlx1wD8OM0MIjVLEHn/UY4i6g3xjfrURVDFQ7x8JhzjF2v56V9IQkBKr92gKU0AZdQVM1F1hK2mwGUbPCRHIysYOfVX/0fwp4uSytZ4jMfZvEPngm10tvzH2PemOOTy8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750836725; c=relaxed/simple; bh=N/G5ZVOZK/jUOGX7VNVa0h55wFkGcEsJ88g2i9aP9gA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ip5vxMx5NyoYFSvxfPikt+97lX4ZpxflJjcQrW7D3NZGjzbEg1zg79siu2Oavd6K6NYLdjp2ZECj39mIqx0lgKNOvJS46FmfIaG2TAxtcmo5Sn37otsmiYKmmuaFZG3/Oe2eFj9lkw2C7Q1BfGPhfTZPjMt7TjLBPF/8ZB4QoRk= 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=phg7ujEj; 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="phg7ujEj" 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 55OJLOCb010657; Wed, 25 Jun 2025 07:31:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=TtspHoag1vd4TwPxf 0NNX79i602MH9pWUgCD4apfYhM=; b=phg7ujEjQ+ZZnA+9288cJDpVtmTO+RDK0 2ncLH9tHzbEwGJ5dK1HKom7YKx+ZhxPpOdiUYhu1n5K5E2SNqLr+hdDw46/Q9sN7 lkCTfNy0qCSqrnkbT6jbdha/6PJ/H9lrq2XlX8Ne2jbQP566SmFKFr27eTQE0Tda xFInk6x5gUdvAxVWyALLB9XktcKTRcWXlC2b0/HqXaNzSMFCdzE+o4mI0yelBBa2 XoxTgKjfSwkzh7eLsvL+rmSg4rTBLCnt9qOTVNTe3I0dfJSJIB9LZi+s54HtiXQw VuqEfRA7Y/kg9j0SwoKKH1taUp4+LmwnCTmjhgjqpV97HFIdPAJHQ== Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 47dm8jdtah-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Jun 2025 07:31:50 +0000 (GMT) Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 55P75jDp002908; Wed, 25 Jun 2025 07:31:48 GMT Received: from smtprelay03.dal12v.mail.ibm.com ([172.16.1.5]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 47e8jm81ju-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Jun 2025 07:31:48 +0000 Received: from smtpav02.dal12v.mail.ibm.com (smtpav02.dal12v.mail.ibm.com [10.241.53.101]) by smtprelay03.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 55P7VlTl4456970 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 25 Jun 2025 07:31:47 GMT Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 171D158896; Wed, 25 Jun 2025 06:38:35 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1481F5888C; Wed, 25 Jun 2025 06:38:30 +0000 (GMT) Received: from jarvis.ozlabs.ibm.com.com (unknown [9.36.18.35]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 25 Jun 2025 06:38:29 +0000 (GMT) From: Andrew Donnellan To: linuxppc-dev@lists.ozlabs.org, pasha.tatashin@soleen.com, akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, sweettea-kernel@dorminy.me, christophe.leroy@csgroup.eu, mingo@kernel.org Subject: [PATCH v15 04/13] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd[s]_set() Date: Wed, 25 Jun 2025 16:37:44 +1000 Message-ID: <20250625063753.77511-5-ajd@linux.ibm.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250625063753.77511-1-ajd@linux.ibm.com> References: <20250625063753.77511-1-ajd@linux.ibm.com> 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-Spam-Details-Enc: AW1haW4tMjUwNjI1MDA1MyBTYWx0ZWRfX0PovtxVj8ThL NNSlhaXr7qMCr+LrjJtY1je6X2A5G+LsrK1JOVNi+P0XFj4G+oyzq0L3+Vzt+FF8RD3H4hsOtZr ZVXGNFBUP5XJgOTKMw7Xa7mwL14sHQq9rCjqqPjrMPATIk451M5Wg0l7+C/02dmgQbCtPSMtlJF Rad49rC3meeeTEp6/GxgDk6bugh12XnOyMqVvPKDK5D1rHxxtWEx7YZR9pHGh5EAvUMhEkELz4V jIxwWgwgBkajBel+Y2r3Oblgh58ABqN3zKOWhU5vDjQjI1qFZpD3O1kWF/UaHB4Y6RTHgcEOJc/ ItsN4zast1iyysvo27LpTH3S+OHIEaLRPLPaMKouq5t+AqFExBdnhaJx6wqZ+yqYTY1G+Ekf0JF MAoAVtDcGB1cIX19mxpK241IXX6zBOTGqVIK4AFKq9cocR3lb18vacjVQTRJLNLS2JdDo5C2 X-Proofpoint-GUID: D26wswk2sk0VpSS0OJ2RVoKeyfuwRq5A X-Proofpoint-ORIG-GUID: D26wswk2sk0VpSS0OJ2RVoKeyfuwRq5A X-Authority-Analysis: v=2.4 cv=combk04i c=1 sm=1 tr=0 ts=685ba5e6 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=6IFa9wvqVegA:10 a=VnNF1IyMAAAA:8 a=7ipKWUHlAAAA:8 a=VwQbUJbxAAAA:8 a=-IAaNFHw-wEKn7DCNmAA:9 a=gpc5p9EgBqZVLdJeV_V1:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-25_01,2025-06-23_07,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 spamscore=0 adultscore=0 mlxlogscore=788 clxscore=1015 impostorscore=0 suspectscore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506250053 Content-Type: text/plain; charset="utf-8" From: Rohan McLure This reverts commit a3b837130b58 ("mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_set"). Reinstate previously unused parameters for the purpose of supporting powerpc platforms, as many do not encode user/kernel ownership of the page in the pte, but instead in the address of the access. Apply this to __page_table_check_pmds_set(), page_table_check_pmd_set(), and the page_table_check_pmd_set() wrapper macro. [ajd@linux.ibm.com: rebase on arm64 + riscv changes, update commit message] Signed-off-by: Rohan McLure Reviewed-by: Pasha Tatashin Acked-by: Ingo Molnar # x86 Signed-off-by: Andrew Donnellan --- v13: remove inaccurate comment on riscv in the commit message v14: rebase v15: rebase, amend commit message --- arch/arm64/include/asm/pgtable.h | 5 +++-- arch/riscv/include/asm/pgtable.h | 4 ++-- arch/x86/include/asm/pgtable.h | 4 ++-- include/linux/page_table_check.h | 12 ++++++------ mm/page_table_check.c | 4 ++-- 5 files changed, 15 insertions(+), 14 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgta= ble.h index be463058207c..0d34157106ee 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -723,7 +723,8 @@ static inline void __set_ptes_anysz(struct mm_struct *m= m, unsigned long addr, page_table_check_ptes_set(mm, ptep, pte, nr); break; case PMD_SIZE: - page_table_check_pmds_set(mm, (pmd_t *)ptep, pte_pmd(pte), nr); + page_table_check_pmds_set(mm, addr, (pmd_t *)ptep, + pte_pmd(pte), nr); break; #ifndef __PAGETABLE_PMD_FOLDED case PUD_SIZE: @@ -1538,7 +1539,7 @@ static inline void pmdp_set_wrprotect(struct mm_struc= t *mm, static inline pmd_t pmdp_establish(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp, pmd_t pmd) { - page_table_check_pmd_set(vma->vm_mm, pmdp, pmd); + page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd); return __pmd(xchg_relaxed(&pmd_val(*pmdp), pmd_val(pmd))); } #endif diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgta= ble.h index 8142b7c48295..62778ccdcf52 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -822,7 +822,7 @@ static inline pud_t pud_mkspecial(pud_t pud) static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd) { - page_table_check_pmd_set(mm, pmdp, pmd); + page_table_check_pmd_set(mm, addr, pmdp, pmd); return __set_pte_at(mm, (pte_t *)pmdp, pmd_pte(pmd)); } =20 @@ -893,7 +893,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct = *mm, static inline pmd_t pmdp_establish(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp, pmd_t pmd) { - page_table_check_pmd_set(vma->vm_mm, pmdp, pmd); + page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd); return __pmd(atomic_long_xchg((atomic_long_t *)pmdp, pmd_val(pmd))); } =20 diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index ab10efb392d1..995ca7e6e0e9 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1260,7 +1260,7 @@ static inline pud_t native_local_pudp_get_and_clear(p= ud_t *pudp) static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd) { - page_table_check_pmd_set(mm, pmdp, pmd); + page_table_check_pmd_set(mm, addr, pmdp, pmd); set_pmd(pmdp, pmd); } =20 @@ -1403,7 +1403,7 @@ static inline void pmdp_set_wrprotect(struct mm_struc= t *mm, static inline pmd_t pmdp_establish(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp, pmd_t pmd) { - page_table_check_pmd_set(vma->vm_mm, pmdp, pmd); + page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd); if (IS_ENABLED(CONFIG_SMP)) { return xchg(pmdp, pmd); } else { diff --git a/include/linux/page_table_check.h b/include/linux/page_table_ch= eck.h index 0bf18b884a12..cf7c28d8d468 100644 --- a/include/linux/page_table_check.h +++ b/include/linux/page_table_check.h @@ -19,8 +19,8 @@ void __page_table_check_pmd_clear(struct mm_struct *mm, p= md_t pmd); void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud); void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t = pte, unsigned int nr); -void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t = pmd, - unsigned int nr); +void __page_table_check_pmds_set(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, pmd_t pmd, unsigned int nr); void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr); void __page_table_check_pte_clear_range(struct mm_struct *mm, @@ -77,12 +77,12 @@ static inline void page_table_check_ptes_set(struct mm_= struct *mm, } =20 static inline void page_table_check_pmds_set(struct mm_struct *mm, - pmd_t *pmdp, pmd_t pmd, unsigned int nr) + unsigned long addr, pmd_t *pmdp, pmd_t pmd, unsigned int nr) { if (static_branch_likely(&page_table_check_disabled)) return; =20 - __page_table_check_pmds_set(mm, pmdp, pmd, nr); + __page_table_check_pmds_set(mm, addr, pmdp, pmd, nr); } =20 static inline void page_table_check_puds_set(struct mm_struct *mm, @@ -132,7 +132,7 @@ static inline void page_table_check_ptes_set(struct mm_= struct *mm, } =20 static inline void page_table_check_pmds_set(struct mm_struct *mm, - pmd_t *pmdp, pmd_t pmd, unsigned int nr) + unsigned long addr, pmd_t *pmdp, pmd_t pmd, unsigned int nr) { } =20 @@ -149,7 +149,7 @@ static inline void page_table_check_pte_clear_range(str= uct mm_struct *mm, =20 #endif /* CONFIG_PAGE_TABLE_CHECK */ =20 -#define page_table_check_pmd_set(mm, pmdp, pmd) page_table_check_pmds_set(= mm, pmdp, pmd, 1) +#define page_table_check_pmd_set(mm, addr, pmdp, pmd) page_table_check_pmd= s_set(mm, addr, pmdp, pmd, 1) #define page_table_check_pud_set(mm, addr, pudp, pud) page_table_check_pud= s_set(mm, addr, pudp, pud, 1) =20 #endif /* __LINUX_PAGE_TABLE_CHECK_H */ diff --git a/mm/page_table_check.c b/mm/page_table_check.c index 3c39e4375886..09258f2ad93f 100644 --- a/mm/page_table_check.c +++ b/mm/page_table_check.c @@ -218,8 +218,8 @@ static inline void page_table_check_pmd_flags(pmd_t pmd) WARN_ON_ONCE(swap_cached_writable(pmd_to_swp_entry(pmd))); } =20 -void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t = pmd, - unsigned int nr) +void __page_table_check_pmds_set(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, pmd_t pmd, unsigned int nr) { unsigned long stride =3D PMD_SIZE >> PAGE_SHIFT; unsigned int i; --=20 2.49.0