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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 406DFC197A0 for ; Thu, 16 Nov 2023 21:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233364AbjKPV53 (ORCPT ); Thu, 16 Nov 2023 16:57:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233558AbjKPV52 (ORCPT ); Thu, 16 Nov 2023 16:57:28 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83886189 for ; Thu, 16 Nov 2023 13:57:25 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F0EFC433C7; Thu, 16 Nov 2023 21:57:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1700171845; bh=zD4hGH2KoTD97xxauAyqf7kh4kdnPIthVgTUzvKtXaE=; h=Date:To:From:Subject:From; b=hv0ImZ2sq9E78A5ihcpLrk1A+SpR4K7aV52xdegIn3Q+1LxobNrpttmbPQ/GfR8J2 GT3tYIDPCwJJ2zdxAdUaPIKPo8h/b8Qj4LnpPzI5eWXogLk3lOjaGUgAeM6e7vY7HU /P6aWa7Ri/7JeXwLF8o+EodlDIyaYY34UmCjn8kM= Date: Thu, 16 Nov 2023 13:57:24 -0800 To: mm-commits@vger.kernel.org, npiggin@gmail.com, mpe@ellerman.id.au, arnd@arndb.de, hca@linux.ibm.com, akpm@linux-foundation.org From: Andrew Morton Subject: + arch-remove-arch_task_struct_allocator.patch added to mm-nonmm-unstable branch Message-Id: <20231116215725.0F0EFC433C7@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: arch: remove ARCH_TASK_STRUCT_ALLOCATOR has been added to the -mm mm-nonmm-unstable branch. Its filename is arch-remove-arch_task_struct_allocator.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arch-remove-arch_task_struct_allocator.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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: Heiko Carstens Subject: arch: remove ARCH_TASK_STRUCT_ALLOCATOR Date: Thu, 16 Nov 2023 14:36:37 +0100 IA-64 was the only architecture which selected ARCH_TASK_STRUCT_ALLOCATOR. IA-64 was removed with commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"). Therefore remove support for ARCH_THREAD_STACK_ALLOCATOR as well. Link: https://lkml.kernel.org/r/20231116133638.1636277-3-hca@linux.ibm.com Signed-off-by: Heiko Carstens Cc: Arnd Bergmann Cc: Michael Ellerman Cc: Nicholas Piggin Signed-off-by: Andrew Morton --- arch/Kconfig | 5 ----- kernel/fork.c | 6 ------ 2 files changed, 11 deletions(-) --- a/arch/Kconfig~arch-remove-arch_task_struct_allocator +++ a/arch/Kconfig @@ -305,13 +305,8 @@ config ARCH_HAS_CPU_FINALIZE_INIT config ARCH_TASK_STRUCT_ON_STACK bool -# Select if arch has its private alloc_task_struct() function -config ARCH_TASK_STRUCT_ALLOCATOR - bool - config HAVE_ARCH_THREAD_STRUCT_WHITELIST bool - depends on !ARCH_TASK_STRUCT_ALLOCATOR help An architecture should select this to provide hardened usercopy knowledge about what region of the thread_struct should be --- a/kernel/fork.c~arch-remove-arch_task_struct_allocator +++ a/kernel/fork.c @@ -165,7 +165,6 @@ void __weak arch_release_task_struct(str { } -#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR static struct kmem_cache *task_struct_cachep; static inline struct task_struct *alloc_task_struct_node(int node) @@ -177,7 +176,6 @@ static inline void free_task_struct(stru { kmem_cache_free(task_struct_cachep, tsk); } -#endif /* * Allocate pages if THREAD_SIZE is >= PAGE_SIZE, otherwise use a @@ -1019,7 +1017,6 @@ static void set_max_threads(unsigned int int arch_task_struct_size __read_mostly; #endif -#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR static void task_struct_whitelist(unsigned long *offset, unsigned long *size) { /* Fetch thread_struct whitelist for the architecture. */ @@ -1034,12 +1031,10 @@ static void task_struct_whitelist(unsign else *offset += offsetof(struct task_struct, thread); } -#endif /* CONFIG_ARCH_TASK_STRUCT_ALLOCATOR */ void __init fork_init(void) { int i; -#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR #ifndef ARCH_MIN_TASKALIGN #define ARCH_MIN_TASKALIGN 0 #endif @@ -1052,7 +1047,6 @@ void __init fork_init(void) arch_task_struct_size, align, SLAB_PANIC|SLAB_ACCOUNT, useroffset, usersize, NULL); -#endif /* do the arch specific task caches init */ arch_task_cache_init(); _ Patches currently in -mm which might be from hca@linux.ibm.com are arch-remove-arch_thread_stack_allocator.patch arch-remove-arch_task_struct_allocator.patch arch-remove-arch_task_struct_on_stack.patch