From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C3559C88E5C for ; Wed, 16 Sep 2026 04:49:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=EmQ9Fe7cHGrxcFUuHgzqonHChHO2g3YGuWgt9bNYRPI=; b=vDInXQ6C2jap0vh3RXTdw7YH7u ssqnXGCaly1Kh9e4nwOSQWc2bdKDpSoSZkghsoLEBLrIrcsXlWat4NULdspcxOXisJpPPWbkUR9H5 6vVD8SgY73/Vk/vg4Wz6XWjGLqtcjEixJGGQrT4VUBoKSsyEel4eN7PHeGpjVnaVXN610IBx2WFYX aRTa24LToa03oBvYzcplJKpIoPEZpYN8KN999Y7I97Z+zNOJ1ycxi8YvftZpLR7CUd9gBj5QFH5G2 mvvfag8+/VGFmCPXC3cT/XcqiEhQ5jvbH0/n2/QbXCa9VlI7nJDt1LvACxhuWa7ipPLc1c8jHY9SJ Me4iCIDg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6hag-00000008KK2-0lvM; Wed, 16 Sep 2026 04:49:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6had-00000008KIh-0JSI for linux-arm-kernel@lists.infradead.org; Wed, 16 Sep 2026 04:49:49 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2A7581516; Tue, 15 Sep 2026 21:49:42 -0700 (PDT) Received: from localhost (a085714.arm.com [10.164.19.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 093853F86F; Tue, 15 Sep 2026 21:49:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1789534185; bh=+FY3+CYyIjz1fY7lpWOX7WGahZAF+qIh85nM2GpHoxI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QoW3RxkpsQUhzNuWJpE9fHmFGXxXHcCADhZagjnTeUrAsuWjZu3BvE1b0VXkt6oCH Z7DrtGW+rhDLXz8RvjAaM/XkeeUEdLNMATwZib3ZL2XmtP2f4+xtTo1nJ0MqnQpFsw mGG/m2mfmR1Y4By6YKd0pxV+28ifmh6+dUbr4lio= From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , David Hildenbrand , Mike Rapoport , Andrew Morton , Lorenzo Stoakes , Catalin Marinas , Will Deacon , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH V3 2/2] arm64/mm: Standardize printing for pgtable entries Date: Wed, 16 Sep 2026 10:19:33 +0530 Message-ID: <20260916044933.2689426-3-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260916044933.2689426-1-anshuman.khandual@arm.com> References: <20260916044933.2689426-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260915_214948_234638_4F38BC40 X-CRM114-Status: GOOD ( 11.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Cc: Catalin Marinas Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: David Hildenbrand (Arm) Signed-off-by: Anshuman Khandual --- arch/arm64/mm/fault.c | 16 +++++++++++----- arch/arm64/mm/mmu.c | 16 ++++++++++------ 2 files changed, 21 insertions(+), 11 deletions(-) diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 75c3e463df2e..2cecf6ba6df7 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -131,6 +131,7 @@ static inline unsigned long mm_to_pgd_phys(struct mm_struct *mm) */ 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); diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index cb49469707a8..e589fb00d1e3 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -2411,6 +2411,8 @@ int arch_set_user_pkey_access(int pkey, unsigned long init_val) #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_struct *mm, pte_t *ptep, pte_t pte) * (__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 -- 2.43.0