From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2C46E30149A for ; Wed, 13 Aug 2025 23:06:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755126371; cv=none; b=ANj8zEcLr3UksoY4Ar8ldXIM86JkwBXOWQeglnt8x/7EIFl5NXDxNr4PA29Ya4m6lG/cSzXs8lJbVrCjnG8LN2X5fwHdLe5uGHl/W/EDs6fwr9I5RXvmuPpSa4PiEMiIV4exhrAiiG0xUVwoyVBDHfp87YTxEciUur+3TT7JMBc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755126371; c=relaxed/simple; bh=vAOn8dicHhGlQrIcf/aLfmsAdTPB5oeJi7xy9c3PkdM=; h=Date:To:From:Subject:Message-Id; b=OlKIGLQ5bgeWOxzfYpY7RCqef86EWYGYxVcue6keYZNK+S4LCYwBX03OgrfQcnTRjxPNqDNUFI1+pRAkRa4Meg8GO1Y7rVcZq8GJkD16ATPcBXZhN9Q67fLtb3Vq2FW/JMOL0t9nw4j6jOXBX+xnbhN7zsX9sa9BlRFdQu3OCe0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=AtzTdp09; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="AtzTdp09" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8D2FC4CEEB; Wed, 13 Aug 2025 23:06:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1755126370; bh=vAOn8dicHhGlQrIcf/aLfmsAdTPB5oeJi7xy9c3PkdM=; h=Date:To:From:Subject:From; b=AtzTdp09tZj1Z0P0hvWvMRmzwKJgQECUTBrtC1Nqd98M6JjqAEyty6iFWGiWIVlWX hEbCrfjM2JHB6ausmzpd7w2z88Ob3NXwoGjFcQWaTPOb+cfMrGe+EE5zC4IvXi4UTd O7Dht6nW3jOI7L/tUBMZYbdFJIxW2V22l3FY4sug= Date: Wed, 13 Aug 2025 16:06:10 -0700 To: mm-commits@vger.kernel.org,will@kernel.org,sweettea-kernel@dorminy.me,pasha.tatashin@soleen.com,nicholas@linux.ibm.com,mingo@kernel.org,maddy@linux.ibm.com,christophe.leroy@csgroup.eu,catalin.marinas@arm.com,ajd@linux.ibm.com,rmclure@linux.ibm.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch added to mm-new branch Message-Id: <20250813230610.A8D2FC4CEEB@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pmd_clear() has been added to the -mm mm-new branch. Its filename is mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Rohan McLure Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pmd_clear() Date: Wed, 13 Aug 2025 16:26:08 +1000 This reverts commit 1831414cd729 ("mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_clear"). 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. [ajd@linux.ibm.com: rebase on arm64 changes] Link: https://lkml.kernel.org/r/20250813062614.51759-8-ajd@linux.ibm.com Signed-off-by: Rohan McLure Signed-off-by: Andrew Donnellan Reviewed-by: Pasha Tatashin Acked-by: Ingo Molnar [x86] Cc: Christophe Leroy Cc: Madhavan Srinivasan Cc: Nicholas Miehlbradt Cc: Sweet Tea Dorminy Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton --- arch/arm64/include/asm/pgtable.h | 2 +- arch/riscv/include/asm/pgtable.h | 2 +- arch/x86/include/asm/pgtable.h | 2 +- include/linux/page_table_check.h | 11 +++++++---- include/linux/pgtable.h | 2 +- mm/page_table_check.c | 5 +++-- 6 files changed, 14 insertions(+), 10 deletions(-) --- a/arch/arm64/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/arch/arm64/include/asm/pgtable.h @@ -1370,7 +1370,7 @@ static inline pte_t __ptep_get_and_clear page_table_check_pte_clear(mm, pte); break; case PMD_SIZE: - page_table_check_pmd_clear(mm, pte_pmd(pte)); + page_table_check_pmd_clear(mm, address, pte_pmd(pte)); break; #ifndef __PAGETABLE_PMD_FOLDED case PUD_SIZE: --- a/arch/riscv/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/arch/riscv/include/asm/pgtable.h @@ -860,7 +860,7 @@ static inline pmd_t pmdp_huge_get_and_cl { pmd_t pmd = __pmd(atomic_long_xchg((atomic_long_t *)pmdp, 0)); - page_table_check_pmd_clear(mm, pmd); + page_table_check_pmd_clear(mm, address, pmd); return pmd; } --- a/arch/x86/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/arch/x86/include/asm/pgtable.h @@ -1318,7 +1318,7 @@ static inline pmd_t pmdp_huge_get_and_cl { pmd_t pmd = native_pmdp_get_and_clear(pmdp); - page_table_check_pmd_clear(mm, pmd); + page_table_check_pmd_clear(mm, addr, pmd); return pmd; } --- a/include/linux/page_table_check.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/include/linux/page_table_check.h @@ -15,7 +15,8 @@ extern struct page_ext_operations page_t void __page_table_check_zero(struct page *page, unsigned int order); void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte); -void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd); +void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr, + pmd_t pmd); void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr, pud_t pud); void __page_table_check_ptes_set(struct mm_struct *mm, unsigned long addr, @@ -52,12 +53,13 @@ static inline void page_table_check_pte_ __page_table_check_pte_clear(mm, pte); } -static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) +static inline void page_table_check_pmd_clear(struct mm_struct *mm, + unsigned long addr, pmd_t pmd) { if (static_branch_likely(&page_table_check_disabled)) return; - __page_table_check_pmd_clear(mm, pmd); + __page_table_check_pmd_clear(mm, addr, pmd); } static inline void page_table_check_pud_clear(struct mm_struct *mm, @@ -121,7 +123,8 @@ static inline void page_table_check_pte_ { } -static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) +static inline void page_table_check_pmd_clear(struct mm_struct *mm, + unsigned long addr, pmd_t pmd) { } --- a/include/linux/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/include/linux/pgtable.h @@ -648,7 +648,7 @@ static inline pmd_t pmdp_huge_get_and_cl pmd_t pmd = *pmdp; pmd_clear(pmdp); - page_table_check_pmd_clear(mm, pmd); + page_table_check_pmd_clear(mm, address, pmd); return pmd; } --- a/mm/page_table_check.c~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear +++ a/mm/page_table_check.c @@ -156,7 +156,8 @@ void __page_table_check_pte_clear(struct } EXPORT_SYMBOL(__page_table_check_pte_clear); -void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) +void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr, + pmd_t pmd) { if (&init_mm == mm) return; @@ -231,7 +232,7 @@ void __page_table_check_pmds_set(struct page_table_check_pmd_flags(pmd); for (i = 0; i < nr; i++) - __page_table_check_pmd_clear(mm, *(pmdp + i)); + __page_table_check_pmd_clear(mm, addr + PMD_SIZE * i, *(pmdp + i)); if (pmd_user_accessible_page(pmd)) page_table_check_set(pmd_pfn(pmd), stride * nr, pmd_write(pmd)); } _ Patches currently in -mm which might be from rmclure@linux.ibm.com are mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_set.patch mm-page_table_check-provide-addr-parameter-to-page_table_check_ptes_set.patch mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_clear.patch mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear.patch mm-provide-address-parameter-to-ptemdud_user_accessible_page.patch powerpc-mm-add-pud_pfn-stub.patch powerpc-mm-implement-_user_accessible_page-for-ptes.patch powerpc-mm-use-set_pte_at_unchecked-for-internal-usages.patch powerpc-mm-support-page-table-check.patch