{"id":2175641,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2175641/?format=json","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.0/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/"},"msgid":"<20251219-pgtable_check_v18rebase-v18-4-755bc151a50b@linux.ibm.com>","date":"2025-12-18T17:09:36","name":"[v18,04/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd[s]_set()","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"45a22f8639981461d4d1751d088cc977ba3a1b48","submitter":{"id":76551,"url":"http://patchwork.ozlabs.org/api/1.0/people/76551/?format=json","name":"Andrew Donnellan","email":"ajd@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20251219-pgtable_check_v18rebase-v18-4-755bc151a50b@linux.ibm.com/mbox/","series":[{"id":485885,"url":"http://patchwork.ozlabs.org/api/1.0/series/485885/?format=json","date":"2025-12-18T17:09:32","name":"Support page table check on PowerPC","version":18,"mbox":"http://patchwork.ozlabs.org/series/485885/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2175641/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=B4YoubLk;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n 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a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:content-type:date:from:in-reply-to\n\t:message-id:mime-version:references:subject:to; s=pp1; bh=eqiA4l\n\tK/eMX5KF8yo+8Tkjj5ayTkYXzOx2oQ6QICjz0=; b=B4YoubLkE6md/sCVHzNrnT\n\t5Sw7/ezimxyKlnlmafmpkJp+ldTkuAILIfax6B3Sh8Rbjd1a3z1+239rvACgtGQf\n\tdIotvxT6exKFYKF2uloF2OgAAGYNwoHCaUMw3/adPQr4W3D2IwkjFCVzpxQM61BI\n\tKEw9Xd6flsYQ5eBFnB65yrf3JDp/VDAeAK3wnHmfJlFIK2lgMerc3WuO7fFXKxdD\n\tCCTbJH35TnlXTIL3LDhwYPwe5HJxljiwtfNHvF47H6kRIlmzSPNPXPTMpyE3AcrA\n\t0jZoFx1f126TutSqckRf4PMfwKjSMood+TTVUzrG+dBAnl8RQIiGKDO/lhaIvewA\n\t==","From":"Andrew Donnellan ","Date":"Fri, 19 Dec 2025 04:09:36 +1100","Subject":"[PATCH v18 04/12] mm/page_table_check: Reinstate address parameter\n in [__]page_table_check_pmd[s]_set()","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"\n <20251219-pgtable_check_v18rebase-v18-4-755bc151a50b@linux.ibm.com>","References":"\n <20251219-pgtable_check_v18rebase-v18-0-755bc151a50b@linux.ibm.com>","In-Reply-To":"\n <20251219-pgtable_check_v18rebase-v18-0-755bc151a50b@linux.ibm.com>","To":"linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,\n Pasha Tatashin ,\n Andrew Morton ,\n Madhavan Srinivasan ,\n Nicholas Piggin ,\n Rohan McLure ,\n Christophe Leroy ","Cc":"Alexandre Ghiti , x86@kernel.org,\n Nicholas Miehlbradt ,\n Sweet Tea Dorminy ,\n Andrew Donnellan ,\n Srish Srinivasan ,\n linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,\n linux-riscv@lists.infradead.org","X-Mailer":"b4 0.14.2","X-TM-AS-GCONF":"00","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjUxMjEzMDAwMSBTYWx0ZWRfX9IQIIzKXw2xl\n 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engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49\n definitions=2025-12-18_02,2025-12-17_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n suspectscore=0 malwarescore=0 impostorscore=0 clxscore=1011 spamscore=0\n priorityscore=1501 lowpriorityscore=0 bulkscore=0 phishscore=0 adultscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2512130001","X-Spam-Status":"No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"From: Rohan McLure \n\nThis reverts commit a3b837130b58 (\"mm/page_table_check: remove unused\nparameter in [__]page_table_check_pmd_set\").\n\nReinstate previously unused parameters for the purpose of supporting\npowerpc platforms, as many do not encode user/kernel ownership of the\npage in the pte, but instead in the address of the access.\n\nApply this to __page_table_check_pmds_set(), page_table_check_pmd_set(), and\nthe page_table_check_pmd_set() wrapper macro.\n\n[ajd@linux.ibm.com: rebase on arm64 + riscv changes, update commit message]\nSigned-off-by: Rohan McLure \nReviewed-by: Pasha Tatashin \nAcked-by: Ingo Molnar # x86\nAcked-by: Alexandre Ghiti # riscv\nSigned-off-by: Andrew Donnellan \n---\nv13: remove inaccurate comment on riscv in the commit message\nv14: rebase\nv15: rebase, amend commit message\n---\n arch/arm64/include/asm/pgtable.h | 5 +++--\n arch/riscv/include/asm/pgtable.h | 4 ++--\n arch/x86/include/asm/pgtable.h | 4 ++--\n include/linux/page_table_check.h | 12 ++++++------\n mm/page_table_check.c | 4 ++--\n 5 files changed, 15 insertions(+), 14 deletions(-)","diff":"diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h\nindex 87ed9b1c011e167125a7f29a3388eca4c7bd9f29..4b580d6246f5a1c8f859bf79665419bbcd8c7cd3 100644\n--- a/arch/arm64/include/asm/pgtable.h\n+++ b/arch/arm64/include/asm/pgtable.h\n@@ -684,7 +684,8 @@ static inline void __set_ptes_anysz(struct mm_struct *mm, unsigned long addr,\n \t\tpage_table_check_ptes_set(mm, ptep, pte, nr);\n \t\tbreak;\n \tcase PMD_SIZE:\n-\t\tpage_table_check_pmds_set(mm, (pmd_t *)ptep, pte_pmd(pte), nr);\n+\t\tpage_table_check_pmds_set(mm, addr, (pmd_t *)ptep,\n+\t\t\t\t\t pte_pmd(pte), nr);\n \t\tbreak;\n #ifndef __PAGETABLE_PMD_FOLDED\n \tcase PUD_SIZE:\n@@ -1489,7 +1490,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,\n static inline pmd_t pmdp_establish(struct vm_area_struct *vma,\n \t\tunsigned long address, pmd_t *pmdp, pmd_t pmd)\n {\n-\tpage_table_check_pmd_set(vma->vm_mm, pmdp, pmd);\n+\tpage_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);\n \treturn __pmd(xchg_relaxed(&pmd_val(*pmdp), pmd_val(pmd)));\n }\n #endif\ndiff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h\nindex c4ea70903fedac7c055fb4cf530000a533c27ade..3fea1d07f7470a04fdc9a6f581d21667e35e0e2a 100644\n--- a/arch/riscv/include/asm/pgtable.h\n+++ b/arch/riscv/include/asm/pgtable.h\n@@ -944,7 +944,7 @@ static inline pmd_t pmd_swp_clear_soft_dirty(pmd_t pmd)\n static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,\n \t\t\t\tpmd_t *pmdp, pmd_t pmd)\n {\n-\tpage_table_check_pmd_set(mm, pmdp, pmd);\n+\tpage_table_check_pmd_set(mm, addr, pmdp, pmd);\n \treturn __set_pte_at(mm, (pte_t *)pmdp, pmd_pte(pmd));\n }\n \n@@ -1015,7 +1015,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,\n static inline pmd_t pmdp_establish(struct vm_area_struct *vma,\n \t\t\t\tunsigned long address, pmd_t *pmdp, pmd_t pmd)\n {\n-\tpage_table_check_pmd_set(vma->vm_mm, pmdp, pmd);\n+\tpage_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);\n \treturn __pmd(atomic_long_xchg((atomic_long_t *)pmdp, pmd_val(pmd)));\n }\n \ndiff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h\nindex 2b540c563d8ddc5ed28e583de6a409c0e1bd97aa..7fd876f8d828ea70def7adc51cc17e70d3046e35 100644\n--- a/arch/x86/include/asm/pgtable.h\n+++ b/arch/x86/include/asm/pgtable.h\n@@ -1214,7 +1214,7 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp)\n static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,\n \t\t\t pmd_t *pmdp, pmd_t pmd)\n {\n-\tpage_table_check_pmd_set(mm, pmdp, pmd);\n+\tpage_table_check_pmd_set(mm, addr, pmdp, pmd);\n \tset_pmd(pmdp, pmd);\n }\n \n@@ -1357,7 +1357,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,\n static inline pmd_t pmdp_establish(struct vm_area_struct *vma,\n \t\tunsigned long address, pmd_t *pmdp, pmd_t pmd)\n {\n-\tpage_table_check_pmd_set(vma->vm_mm, pmdp, pmd);\n+\tpage_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);\n \tif (IS_ENABLED(CONFIG_SMP)) {\n \t\treturn xchg(pmdp, pmd);\n \t} else {\ndiff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h\nindex 0bf18b884a1265fa98eb04d2e3dbd63d02e706f3..cf7c28d8d468c026cb5278435a64fbcf0fe9260e 100644\n--- a/include/linux/page_table_check.h\n+++ b/include/linux/page_table_check.h\n@@ -19,8 +19,8 @@ void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd);\n void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud);\n void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t pte,\n \t\tunsigned int nr);\n-void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd,\n-\t\tunsigned int nr);\n+void __page_table_check_pmds_set(struct mm_struct *mm, unsigned long addr,\n+\t\tpmd_t *pmdp, pmd_t pmd, unsigned int nr);\n void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr,\n \t\tpud_t *pudp, pud_t pud, unsigned int nr);\n void __page_table_check_pte_clear_range(struct mm_struct *mm,\n@@ -77,12 +77,12 @@ static inline void page_table_check_ptes_set(struct mm_struct *mm,\n }\n \n static inline void page_table_check_pmds_set(struct mm_struct *mm,\n-\t\tpmd_t *pmdp, pmd_t pmd, unsigned int nr)\n+\t\tunsigned long addr, pmd_t *pmdp, pmd_t pmd, unsigned int nr)\n {\n \tif (static_branch_likely(&page_table_check_disabled))\n \t\treturn;\n \n-\t__page_table_check_pmds_set(mm, pmdp, pmd, nr);\n+\t__page_table_check_pmds_set(mm, addr, pmdp, pmd, nr);\n }\n \n static inline void page_table_check_puds_set(struct mm_struct *mm,\n@@ -132,7 +132,7 @@ static inline void page_table_check_ptes_set(struct mm_struct *mm,\n }\n \n static inline void page_table_check_pmds_set(struct mm_struct *mm,\n-\t\tpmd_t *pmdp, pmd_t pmd, unsigned int nr)\n+\t\tunsigned long addr, pmd_t *pmdp, pmd_t pmd, unsigned int nr)\n {\n }\n \n@@ -149,7 +149,7 @@ static inline void page_table_check_pte_clear_range(struct mm_struct *mm,\n \n #endif /* CONFIG_PAGE_TABLE_CHECK */\n \n-#define page_table_check_pmd_set(mm, pmdp, pmd)\tpage_table_check_pmds_set(mm, pmdp, pmd, 1)\n+#define page_table_check_pmd_set(mm, addr, pmdp, pmd)\tpage_table_check_pmds_set(mm, addr, pmdp, pmd, 1)\n #define page_table_check_pud_set(mm, addr, pudp, pud)\tpage_table_check_puds_set(mm, addr, pudp, pud, 1)\n \n #endif /* __LINUX_PAGE_TABLE_CHECK_H */\ndiff --git a/mm/page_table_check.c b/mm/page_table_check.c\nindex a48f835216a1f50ffd088477ae7e80896be43bc6..86dc4e4d1dad12fe5d9d86905234b009257586d5 100644\n--- a/mm/page_table_check.c\n+++ b/mm/page_table_check.c\n@@ -225,8 +225,8 @@ static inline void page_table_check_pmd_flags(pmd_t pmd)\n \t}\n }\n \n-void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd,\n-\t\tunsigned int nr)\n+void __page_table_check_pmds_set(struct mm_struct *mm, unsigned long addr,\n+\t\tpmd_t *pmdp, pmd_t pmd, unsigned int nr)\n {\n \tunsigned long stride = PMD_SIZE >> PAGE_SHIFT;\n \tunsigned int i;\n","prefixes":["v18","04/12"]}