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 BFDACC2FB for ; Mon, 12 May 2025 00:51:21 +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=1747011081; cv=none; b=rdUbUmfimAc7ZEBn8zA0hpaSnPkbfDy/MQFZuw5Lp1pjwH3xS4FH0mtuq/xuIggcV2M22V5MrEONM/dMhY5Vv+j4ho/3Igi79RZT5S03Ccl0233nbr93pnUwJijKUnAbSQlp6geV7NLY8Us2qXjuarPlgqld88xBSInDvzTPhiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747011081; c=relaxed/simple; bh=AVVZ2BQdoIl5QDUTJqZuzh8+IZyrJ2b/VZxvdjFzSTM=; h=Date:To:From:Subject:Message-Id; b=utilCBQFCzP+/7T11khoxp08GxSAcT52pgbOpr5kcUCkqHmAkhKf1Exd4SLS/u81omgeN5xhaglnp+mwYm1m6aiUYbH1sOwnhN7goYctLmBP6atQlZiZfzbeKEHVVgvhoyxzTHr1mlSDmPUWw/WrLYpNxr2ueVZn91Ic0FzniUc= 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=RZzmXZh3; 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="RZzmXZh3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F947C4CEE4; Mon, 12 May 2025 00:51:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1747011081; bh=AVVZ2BQdoIl5QDUTJqZuzh8+IZyrJ2b/VZxvdjFzSTM=; h=Date:To:From:Subject:From; b=RZzmXZh32zzB7W0Jci8nMyUjhESFESCUTJ7RQDwedmzM4mXXAhHkJzPelQi1BNkry gumQJ6NpIdgwpBqn2xcE8tMbSmjtytn/sZUo4ykLquxxK0+GfDfZqLZTIJ2ri39O9d jxDiu8W3lSENvpb6SwqD9Lg00kkd3WAe9I6s2Bac= Date: Sun, 11 May 2025 17:51:21 -0700 To: mm-commits@vger.kernel.org,zhengqi.arch@bytedance.com,yang@os.amperecomputing.com,x86@kernel.org,willy@infradead.org,will@kernel.org,ryan.roberts@arm.com,rppt@kernel.org,peterz@infradead.org,paul.walmsley@sifive.com,palmer@dabbelt.com,mpe@ellerman.id.au,mark.rutland@arm.com,maddy@linux.ibm.com,linus.walleij@linaro.org,geert@linux-m68k.org,davem@davemloft.net,dave.hansen@linux.intel.com,catalin.marinas@arm.com,aou@eecs.berkeley.edu,andreas@gaisler.com,agordeev@linux.ibm.com,kevin.brodsky@arm.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] sparc64-mm-call-ctor-dtor-for-kernel-ptes.patch removed from -mm tree Message-Id: <20250512005121.8F947C4CEE4@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: sparc64: mm: call ctor/dtor for kernel PTEs has been removed from the -mm tree. Its filename was sparc64-mm-call-ctor-dtor-for-kernel-ptes.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Kevin Brodsky Subject: sparc64: mm: call ctor/dtor for kernel PTEs Date: Tue, 8 Apr 2025 10:52:16 +0100 The generic implementation of pte_{alloc_one,free}_kernel now calls the [cd]tor, without initialising the ptlock needlessly as pagetable_pte_ctor() skips it for init_mm. Align sparc64 with the generic implementation by ensuring pagetable_pte_[cd]tor() are called for kernel PTEs. As a result the kernel and user alloc/free functions have the same implementation, and since pgtable_t is defined as pte_t *, we can have both call a common helper. Link: https://lkml.kernel.org/r/20250408095222.860601-7-kevin.brodsky@arm.com Signed-off-by: Kevin Brodsky Cc: Albert Ou Cc: Andreas Larsson Cc: Catalin Marinas Cc: David S. Miller Cc: Geert Uytterhoeven Cc: Linus Waleij Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Matthew Wilcox (Oracle) Cc: Michael Ellerman Cc: Mike Rapoport Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Qi Zheng Cc: Ryan Roberts Cc: Will Deacon Cc: Cc: Yang Shi Cc: Dave Hansen Cc: Alexander Gordeev Signed-off-by: Andrew Morton --- arch/sparc/mm/init_64.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) --- a/arch/sparc/mm/init_64.c~sparc64-mm-call-ctor-dtor-for-kernel-ptes +++ a/arch/sparc/mm/init_64.c @@ -2878,18 +2878,7 @@ void __flush_tlb_all(void) : : "r" (pstate)); } -pte_t *pte_alloc_one_kernel(struct mm_struct *mm) -{ - struct page *page = alloc_page(GFP_KERNEL | __GFP_ZERO); - pte_t *pte = NULL; - - if (page) - pte = (pte_t *) page_address(page); - - return pte; -} - -pgtable_t pte_alloc_one(struct mm_struct *mm) +static pte_t *__pte_alloc_one(struct mm_struct *mm) { struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL | __GFP_ZERO, 0); @@ -2902,9 +2891,14 @@ pgtable_t pte_alloc_one(struct mm_struct return ptdesc_address(ptdesc); } -void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +pte_t *pte_alloc_one_kernel(struct mm_struct *mm) { - free_page((unsigned long)pte); + return __pte_alloc_one(mm); +} + +pgtable_t pte_alloc_one(struct mm_struct *mm) +{ + return __pte_alloc_one(mm); } static void __pte_free(pgtable_t pte) @@ -2915,6 +2909,11 @@ static void __pte_free(pgtable_t pte) pagetable_free(ptdesc); } +void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + __pte_free(pte); +} + void pte_free(struct mm_struct *mm, pgtable_t pte) { __pte_free(pte); _ Patches currently in -mm which might be from kevin.brodsky@arm.com are