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 7319A30149A for ; Wed, 13 Aug 2025 23:05:51 +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=1755126351; cv=none; b=tREpMtBwCJiX/sdCUOSB3GY7XMpQQ+o4oHH5ymH7gj4xfh21Rj6Ugvl3FEStk65bKgq3sUHCEko17aVhitgy9Q/ND0sIeKLHgFBa83TuK4cE5UbXks1cGBMJSvF5FfhRfUqQpRwhtRRB0i7hLoy2lZRV1PqYq4EZ7619r93/+sc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755126351; c=relaxed/simple; bh=op5FUUM1HKLr3iKDd+1EPSrCHn4xPXMxhdi3MehKy08=; h=Date:To:From:Subject:Message-Id; b=pT9HCr/3JM7btvX71NJ3pFYbucxrh26lpEW+oR79TT4bqeq4GsQeUQldkkvvYj2aCrb/ypvfDKJV711p0b5XtoPodBGr18DQqPhivtIaVgIIsideBRI/g2zwsjuAEX1TBokqJoDo3hdyl9TCNZwD9EQqeOalVDasMy400myF34w= 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=ry16mKrR; 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="ry16mKrR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08229C4CEEB; Wed, 13 Aug 2025 23:05:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1755126351; bh=op5FUUM1HKLr3iKDd+1EPSrCHn4xPXMxhdi3MehKy08=; h=Date:To:From:Subject:From; b=ry16mKrRaIWdi6GP99Lkb8G3HZxrtk7F4Dda9K6MHXnviX43J5Zned/6i6/H9KQSv ra1hqNInbTlcXFBQ84qmi7ElR6Q8+aSxu0ERqHiiny4gCLpl+ABnn/8b/3ZV5yWeFN C3lEgcQlYASktkmztE/zkEPKtsicShTvr2EBX0iw= Date: Wed, 13 Aug 2025 16:05:50 -0700 To: mm-commits@vger.kernel.org,will@kernel.org,sweettea-kernel@dorminy.me,rmclure@linux.ibm.com,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,akpm@linux-foundation.org From: Andrew Morton Subject: + arm64-mm-add-addr-parameter-to-__set_ptes_anysz.patch added to mm-new branch Message-Id: <20250813230551.08229C4CEEB@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: arm64/mm: add addr parameter to __set_ptes_anysz() has been added to the -mm mm-new branch. Its filename is arm64-mm-add-addr-parameter-to-__set_ptes_anysz.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arm64-mm-add-addr-parameter-to-__set_ptes_anysz.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: Andrew Donnellan Subject: arm64/mm: add addr parameter to __set_ptes_anysz() Date: Wed, 13 Aug 2025 16:26:02 +1000 Patch series "Support page table check on PowerPC", v16. Support page table check on all PowerPC platforms. This works by serialising assignments, reassignments and clears of page table entries at each level in order to ensure that anonymous mappings have at most one writable consumer, and likewise that file-backed mappings are not simultaneously also anonymous mappings. In order to support this infrastructure, a number of stubs must be defined for all powerpc platforms. Additionally, separate set_pte_at() and set_pte_at_unchecked(), to allow for internal, uninstrumented mappings. On some PowerPC platforms, implementing {pte,pmd,pud}_user_accessible_page() requires the address. We revert previous changes that removed the address parameter from various interfaces, and add it to some other interfaces, in order to allow this. (This series was initially written by Rohan McLure, who has left IBM and is no longer working on powerpc.) This patch (of 13): To provide support for page table check on powerpc, we need to reinstate the address parameter in several functions, including page_table_check_{ptes,pmds,puds}_set(). In preparation for this, add the addr parameter to arm64's __set_ptes_anysz() and change its callsites accordingly. Link: https://lkml.kernel.org/r/20250813062614.51759-1-ajd@linux.ibm.com Link: https://lkml.kernel.org/r/20250813062614.51759-2-ajd@linux.ibm.com Signed-off-by: Andrew Donnellan Cc: Christophe Leroy Cc: Nicholas Miehlbradt Cc: Pasha Tatashin Cc: Sweet Tea Dorminy Cc: Ingo Molnar Cc: Madhavan Srinivasan Cc: Rohan McLure Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton --- arch/arm64/include/asm/pgtable.h | 19 ++++++++----------- arch/arm64/mm/hugetlbpage.c | 10 +++++----- 2 files changed, 13 insertions(+), 16 deletions(-) --- a/arch/arm64/include/asm/pgtable.h~arm64-mm-add-addr-parameter-to-__set_ptes_anysz +++ a/arch/arm64/include/asm/pgtable.h @@ -698,8 +698,8 @@ static inline pgprot_t pud_pgprot(pud_t return __pgprot(pud_val(pfn_pud(pfn, __pgprot(0))) ^ pud_val(pud)); } -static inline void __set_ptes_anysz(struct mm_struct *mm, pte_t *ptep, - pte_t pte, unsigned int nr, +static inline void __set_ptes_anysz(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned int nr, unsigned long pgsize) { unsigned long stride = pgsize >> PAGE_SHIFT; @@ -734,26 +734,23 @@ static inline void __set_ptes_anysz(stru __set_pte_complete(pte); } -static inline void __set_ptes(struct mm_struct *mm, - unsigned long __always_unused addr, +static inline void __set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte, unsigned int nr) { - __set_ptes_anysz(mm, ptep, pte, nr, PAGE_SIZE); + __set_ptes_anysz(mm, addr, ptep, pte, nr, PAGE_SIZE); } -static inline void __set_pmds(struct mm_struct *mm, - unsigned long __always_unused addr, +static inline void __set_pmds(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd, unsigned int nr) { - __set_ptes_anysz(mm, (pte_t *)pmdp, pmd_pte(pmd), nr, PMD_SIZE); + __set_ptes_anysz(mm, addr, (pte_t *)pmdp, pmd_pte(pmd), nr, PMD_SIZE); } #define set_pmd_at(mm, addr, pmdp, pmd) __set_pmds(mm, addr, pmdp, pmd, 1) -static inline void __set_puds(struct mm_struct *mm, - unsigned long __always_unused addr, +static inline void __set_puds(struct mm_struct *mm, unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr) { - __set_ptes_anysz(mm, (pte_t *)pudp, pud_pte(pud), nr, PUD_SIZE); + __set_ptes_anysz(mm, addr, (pte_t *)pudp, pud_pte(pud), nr, PUD_SIZE); } #define set_pud_at(mm, addr, pudp, pud) __set_puds(mm, addr, pudp, pud, 1) --- a/arch/arm64/mm/hugetlbpage.c~arm64-mm-add-addr-parameter-to-__set_ptes_anysz +++ a/arch/arm64/mm/hugetlbpage.c @@ -225,8 +225,8 @@ void set_huge_pte_at(struct mm_struct *m ncontig = num_contig_ptes(sz, &pgsize); if (!pte_present(pte)) { - for (i = 0; i < ncontig; i++, ptep++) - __set_ptes_anysz(mm, ptep, pte, 1, pgsize); + for (i = 0; i < ncontig; i++, ptep++, addr += pgsize) + __set_ptes_anysz(mm, addr, ptep, pte, 1, pgsize); return; } @@ -234,7 +234,7 @@ void set_huge_pte_at(struct mm_struct *m if (pte_cont(pte) && pte_valid(__ptep_get(ptep))) clear_flush(mm, addr, ptep, pgsize, ncontig); - __set_ptes_anysz(mm, ptep, pte, ncontig, pgsize); + __set_ptes_anysz(mm, addr, ptep, pte, ncontig, pgsize); } pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma, @@ -449,7 +449,7 @@ int huge_ptep_set_access_flags(struct vm if (pte_young(orig_pte)) pte = pte_mkyoung(pte); - __set_ptes_anysz(mm, ptep, pte, ncontig, pgsize); + __set_ptes_anysz(mm, addr, ptep, pte, ncontig, pgsize); return 1; } @@ -473,7 +473,7 @@ void huge_ptep_set_wrprotect(struct mm_s pte = get_clear_contig_flush(mm, addr, ptep, pgsize, ncontig); pte = pte_wrprotect(pte); - __set_ptes_anysz(mm, ptep, pte, ncontig, pgsize); + __set_ptes_anysz(mm, addr, ptep, pte, ncontig, pgsize); } pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, _ Patches currently in -mm which might be from ajd@linux.ibm.com are arm64-mm-add-addr-parameter-to-__set_ptes_anysz.patch arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz.patch