From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 B363C36654F for ; Thu, 24 Sep 2026 21:44:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790286294; cv=none; b=LFjxBuWlnxPRv/2OSnxNT2eT6kAaWKplSkfNmr5NGI3Ahe+nQYVknOqKOf0U90GgDGxNCLPdTwB8u06vkSB+rKZZyDtFEt/zpsFqE+GmAR+q4y2mIqJ3r5n56H+aH8n55IBvv3ydQFGqoijzfbeHqa1mF0K/sAOMGpszFO9je0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790286294; c=relaxed/simple; bh=kopoKfCQpz0Kf5o3gN/S3eap/tKwxXMxOlGFjbUp5mU=; h=Date:To:From:Subject:Message-Id; b=Teh6BUCo+gWJqZuLT9aAVNoe0NtQzbO3F5M0NT9qw+gWWSCvE10ChNoCe+dHrli411I0lo7dY75LVT47Za4Y+WaCFjjIV3PofqIKK8EJ5RhfAgPaJEOWCB+ClO7/giE8QxyZDyJxNjY0Hj6XmjW0JEA02emMTb/0ChWaCV3YvzA= 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=1I9ybjcu; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="1I9ybjcu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47B991F000FF; Thu, 24 Sep 2026 21:44:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1790286292; bh=oXVBZ9LEjT5MSX1NiAPXoRNoRI+8JVpEYiOFveJdr/4=; h=Date:To:From:Subject; b=1I9ybjcugSxPTvOGEzyUsqrf8E3QaFv6thHB2M+UBZqjUU7G4GZ8dDh2QiudcPWbo 8RlkfcLTyE6FZKE0yagPabrE79A0lVQ7WVrJMW7dN116M5W3jYT5Yijh6h90IZCSDW 11BoPthmUR6X6N77QIujer1hkGpAXYVxAt1gytEQ= Date: Thu, 24 Sep 2026 14:44:51 -0700 To: mm-commits@vger.kernel.org,will@kernel.org,rppt@kernel.org,ljs@kernel.org,david@kernel.org,catalin.marinas@arm.com,anshuman.khandual@arm.com,akpm@linux-foundation.org From: Andrew Morton Subject: + arm64-mm-standardize-printing-for-pgtable-entries.patch added to mm-new branch Message-Id: <20260924214452.47B991F000FF@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: standardize printing for pgtable entries has been added to the -mm mm-new branch. Its filename is arm64-mm-standardize-printing-for-pgtable-entries.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arm64-mm-standardize-printing-for-pgtable-entries.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. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next 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 various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Anshuman Khandual Subject: arm64/mm: standardize printing for pgtable entries Date: Wed, 16 Sep 2026 10:19:33 +0530 Standardize printing for pgtable entries using recently introduced generic helper ptval_bytes_to_hex_str() in core MM which automatically enables 128 bits entries when added later. Link: https://lore.kernel.org/20260916044933.2689426-3-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual Signed-off-by: Andrew Morton Reviewed-by: David Hildenbrand (Arm) Reviewed-by: Catalin Marinas Cc: Will Deacon Cc: Mike Rapoport Cc: Lorenzo Stoakes --- arch/arm64/mm/fault.c | 16 +++++++++++----- arch/arm64/mm/mmu.c | 16 ++++++++++------ 2 files changed, 21 insertions(+), 11 deletions(-) --- a/arch/arm64/mm/fault.c~arm64-mm-standardize-printing-for-pgtable-entries +++ a/arch/arm64/mm/fault.c @@ -131,6 +131,7 @@ static inline unsigned long mm_to_pgd_ph */ static void show_pte(unsigned long addr) { + char pxd_str[PTVAL_STR_MAX]; struct mm_struct *mm; pgd_t *pgdp; pgd_t pgd; @@ -160,7 +161,8 @@ static void show_pte(unsigned long addr) pgdp = pgd_offset(mm, addr); pgd = READ_ONCE(*pgdp); - pr_alert("[%016lx] pgd=%016llx", addr, pgd_val(pgd)); + ptval_to_str(pxd_str, pgd_val(pgd)); + pr_alert("[%016lx] pgd=%s", addr, pxd_str); do { p4d_t *p4dp, p4d; @@ -173,19 +175,22 @@ static void show_pte(unsigned long addr) p4dp = p4d_offset_lockless(pgdp, pgd, addr); p4d = READ_ONCE(*p4dp); - pr_cont(", p4d=%016llx", p4d_val(p4d)); + ptval_to_str(pxd_str, p4d_val(p4d)); + pr_cont(", p4d=%s", pxd_str); if (p4d_none(p4d) || p4d_bad(p4d)) break; pudp = pud_offset_lockless(p4dp, p4d, addr); pud = READ_ONCE(*pudp); - pr_cont(", pud=%016llx", pud_val(pud)); + ptval_to_str(pxd_str, pud_val(pud)); + pr_cont(", pud=%s", pxd_str); if (pud_none(pud) || pud_bad(pud)) break; pmdp = pmd_offset_lockless(pudp, pud, addr); pmd = READ_ONCE(*pmdp); - pr_cont(", pmd=%016llx", pmd_val(pmd)); + ptval_to_str(pxd_str, pmd_val(pmd)); + pr_cont(", pmd=%s", pxd_str); if (pmd_none(pmd) || pmd_bad(pmd)) break; @@ -194,7 +199,8 @@ static void show_pte(unsigned long addr) break; pte = __ptep_get(ptep); - pr_cont(", pte=%016llx", pte_val(pte)); + ptval_to_str(pxd_str, pte_val(pte)); + pr_cont(", pte=%s", pxd_str); pte_unmap(ptep); } while(0); --- a/arch/arm64/mm/mmu.c~arm64-mm-standardize-printing-for-pgtable-entries +++ a/arch/arm64/mm/mmu.c @@ -2411,6 +2411,8 @@ int arch_set_user_pkey_access(int pkey, #ifdef CONFIG_DEBUG_VM void __check_safe_pte_update(struct mm_struct *mm, pte_t *ptep, pte_t pte) { + char pte_str_old[PTVAL_STR_MAX]; + char pte_str[PTVAL_STR_MAX]; pte_t old_pte; old_pte = __ptep_get(ptep); @@ -2425,15 +2427,17 @@ void __check_safe_pte_update(struct mm_s * (__ptep_set_access_flags safely changes valid ptes without going * through an invalid entry). */ + ptval_to_str(pte_str, pte_val(pte)); + ptval_to_str(pte_str_old, pte_val(old_pte)); VM_WARN_ONCE(!pte_young(pte), - "%s: racy access flag clearing: 0x%016llx -> 0x%016llx", - __func__, pte_val(old_pte), pte_val(pte)); + "%s: racy access flag clearing: %s -> %s", + __func__, pte_str_old, pte_str); VM_WARN_ONCE(pte_write(old_pte) && !pte_dirty(pte), - "%s: racy dirty state clearing: 0x%016llx -> 0x%016llx", - __func__, pte_val(old_pte), pte_val(pte)); + "%s: racy dirty state clearing: %s -> %s", + __func__, pte_str_old, pte_str); VM_WARN_ONCE(!pgattr_change_is_safe(pte_val(old_pte), pte_val(pte)), - "%s: unsafe attribute change: 0x%016llx -> 0x%016llx", - __func__, pte_val(old_pte), pte_val(pte)); + "%s: unsafe attribute change: %s -> %s", + __func__, pte_str_old, pte_str); } #endif /* CONFIG_DEBUG_VM */ #endif _ Patches currently in -mm which might be from anshuman.khandual@arm.com are mm-make-ptval_to_str-generally-available.patch mm-stop-using-pxd_error.patch loongarch-mm-stop-using-pte_error.patch parisc-mm-directly-use-generic-_clear_bad.patch sh-mm-stop-using-pte_error.patch sh-mm-stop-using-_error.patch sh-mm-stop-using-pgd_error.patch mm-drop-pxd_error.patch mm-constify-arguments-in-default-pxdp_get.patch arm64-mm-move-__check_safe_pte_update.patch arm64-mm-standardize-printing-for-pgtable-entries.patch