From nobody Sat Feb 7 15:21:49 2026 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 9E66CC77B60 for ; Thu, 23 Mar 2023 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231340AbjCWJWa (ORCPT ); Thu, 23 Mar 2023 05:22:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229461AbjCWJWZ (ORCPT ); Thu, 23 Mar 2023 05:22:25 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 315493C3B; Thu, 23 Mar 2023 02:22:23 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7A397B8201C; Thu, 23 Mar 2023 09:22:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 259A5C433A8; Thu, 23 Mar 2023 09:22:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563341; bh=dcp30wp/Hf38sazwKthrJJR/hJsAXPYg2a1DhIjhRsY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jhevsx6FrKz/DSKyWa48ul+Br2Qq/2CdJ5Nno3oUdRcLCIk7t1cB69NdAiT1tyn5H Lhz9wXdd5uW6MFyeM+B3h0u5ydPTvK6l7CwpgHyUk3OAlG9W2UODv0/MJDEe3oHJOX /m2zMnBtkTaffkchF+6L07TdZQwBCPludGH8NHdSFGMYkW0A/qG31dPbgSSEevOGTB mnSJ77OEHBhaBpfgDQgrtyP3mOg3IRf23662ZNu2bRdqFbjyKhfTPTIRFNBR2BggXZ Y0Ifi3DaCS8c1NsQKYmG++xjhZAcZPCDklL+uk+NpDJszMuDUHYYaoRUcujltm1mXh pEp5mnhql9Qpg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 01/14] arm: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:43 +0200 Message-Id: <20230323092156.2545741-2-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/arm/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 929e646e84b9..0b15384c62e6 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1354,17 +1354,19 @@ config ARM_MODULE_PLTS configurations. If unsure, say y. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" default "11" if SOC_AM33XX default "8" if SA1111 default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. + + Don't change if unsure. =20 config ALIGNMENT_TRAP def_bool CPU_CP15_MMU --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 2844AC6FD1C for ; Thu, 23 Mar 2023 09:22:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231460AbjCWJWr (ORCPT ); Thu, 23 Mar 2023 05:22:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231511AbjCWJWg (ORCPT ); Thu, 23 Mar 2023 05:22:36 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44AF71F4BE; Thu, 23 Mar 2023 02:22:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 02287B8201C; Thu, 23 Mar 2023 09:22:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3258C433AA; Thu, 23 Mar 2023 09:22:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563348; bh=1wuMjPglrXxylZYRQp9g6PBGTaQCsIyJmL4MjyDfkT8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OZZcT6du5dwua6qJE5uCEiu3Bbh3Q97TquC+/sYNXkmdypc+bsLGDW93XoYEnZ4mH MSoFTjH6bKTl3fsgQ4Bc3SK5VaWp9pBpu5SvZo1sRyf7bml4ql3CzkUro6OsghW0vc Oy90Vtp+PuM+H/Fs7+pOeFq6VXb7ExvoCICIAZhSBN3LP0NP130lo2YGBKKTONyDoH O4a++hJhMH5PNPPUpgd9/coAlzQjl3AYohwmcVJY6mAnGbnI5g5nhBGeR+cfm7Ukr1 7eEmM1z6tUZiEn08emyl+wuY10m5eYRrfMvZd2JFyNi2MsejH2NoIL8GFXLAlQ90D9 npeRgo88+OTgg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:44 +0200 Message-Id: <20230323092156.2545741-3-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" It is not a good idea to change fundamental parameters of core memory management. Having predefined ranges suggests that the values within those ranges are sensible, but one has to *really* understand implications of changing MAX_ORDER before actually amending it and ranges don't help here. Drop ranges in definition of ARCH_FORCE_MAX_ORDER Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/arm64/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e60baf7859d1..bab6483e4317 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1489,9 +1489,7 @@ config XEN config ARCH_FORCE_MAX_ORDER int "Maximum zone order" if ARM64_4K_PAGES || ARM64_16K_PAGES default "13" if ARM64_64K_PAGES - range 11 13 if ARM64_16K_PAGES default "11" if ARM64_16K_PAGES - range 10 15 if ARM64_4K_PAGES default "10" help The kernel memory allocator divides physically contiguous memory --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 34F20C6FD1D for ; Thu, 23 Mar 2023 09:23:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231226AbjCWJXJ (ORCPT ); Thu, 23 Mar 2023 05:23:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231405AbjCWJWl (ORCPT ); Thu, 23 Mar 2023 05:22:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66D8120A10; Thu, 23 Mar 2023 02:22:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E9F3F62566; Thu, 23 Mar 2023 09:22:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FB03C433A8; Thu, 23 Mar 2023 09:22:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563356; bh=YegLTyBTgABVrk8X6Ho+iz90BqWsK5lqi1pUx+eF0sU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hwVWgNUmpqudVX5t/F4T7eVjm0xHfzWtg7vXKXM2ECqAoid0i5uuM9texyHvlOPEV lyJia9wrDlW0JFd9lMjQOEx8W0T5jd1+TJG7CJma6/ByrozwfR3fEJ+mMDIlvNLzwV 4q5Lcyirnh53qgBO9ZpI9gkUUf+3fLcNPWxiuxAjR4abA+WGhiQ4cIT1SEY/45ykKB w2YMBaN6+8xqLRjCoGCUnCSqFJWz3rgKIrF+qrDiwAa5EbSopDjo2gimc/UR44IViU W04N0UqyO8l9zfjlSz5/GrT+ylQg8hLZO0SHJ0FWxnUAaLATArJJIMkA+D/WKft8PF c7ZFGS6pkh14g== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 03/14] arm64: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:45 +0200 Message-Id: <20230323092156.2545741-4-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Catalin Marinas Acked-by: Kirill A. Shutemov --- arch/arm64/Kconfig | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index bab6483e4317..75af4c329224 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1487,24 +1487,24 @@ config XEN # 16K | 27 | 14 | 13 | 11 = | # 64K | 29 | 16 | 13 | 13 = | config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" if ARM64_4K_PAGES || ARM64_16K_PAGES + int "Order of maximal physically contiguous allocations" if ARM64_4K_PAGE= S || ARM64_16K_PAGES default "13" if ARM64_64K_PAGES default "11" if ARM64_16K_PAGES default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. =20 - We make sure that we can allocate up to a HugePage size for each config= uration. - Hence we have : - MAX_ORDER =3D PMD_SHIFT - PAGE_SHIFT =3D> PAGE_SHIFT - 3 + The maximal size of allocation cannot exceed the size of the + section, so the value of MAX_ORDER should satisfy =20 - However for 4K, we choose a higher default value, 10 as opposed to 9, g= iving us - 4M allocations matching the default size used by generic code. + MAX_ORDER + PAGE_SHIFT <=3D SECTION_SIZE_BITS + + Don't change if unsure. =20 config UNMAP_KERNEL_AT_EL0 bool "Unmap kernel when running in userspace (aka \"KAISER\")" if EXPERT @@ -2298,4 +2298,3 @@ endmenu # "CPU Power Management" source "drivers/acpi/Kconfig" =20 source "arch/arm64/kvm/Kconfig" - --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 53D79C6FD1C for ; Thu, 23 Mar 2023 09:24:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231363AbjCWJYC (ORCPT ); Thu, 23 Mar 2023 05:24:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231633AbjCWJW5 (ORCPT ); Thu, 23 Mar 2023 05:22:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B65BB20D22; Thu, 23 Mar 2023 02:22:46 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3A3A3B82021; Thu, 23 Mar 2023 09:22:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E437BC433B0; Thu, 23 Mar 2023 09:22:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563363; bh=VIGq21IucJ5jyDrKWO8wDSFXKn1G4gpham/RhLaDiSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YfDyZKg6ubB3qVtTlpxKobEqRtwno61zPFlP3g3EIvlplSklLsZdZgd8QI++nKp4n qq2mJOxPwHzVhgTFzEAiFOfx+KPDLDwoJMzXey52ho+6XByzyjn3T3ZCKD4VZYT3kU cESe0WRXj+emYBHu833Ie/zYH4UBgDHJ3GJ5ePxM/uO1muD+DtVkdjQAf9ziZXzj+H 4+VX6vYZgHgBasWaay2Yvm3hUg76YEqRuvUFK4EUvPHEx5XhVCKEKGRBPfWgR5WtWO dU4L0e/mgCXn8RbvJfFELuUfLqP+eE794rhQOoRiuNs4FEE1ZnaNqR/QYUnj3nqRee MRKQtDiPgSwZg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 04/14] csky: drop ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:46 +0200 Message-Id: <20230323092156.2545741-5-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The default value of ARCH_FORCE_MAX_ORDER matches the generic default defined in the MM code, the architecture does not support huge pages, so there is no need to keep ARCH_FORCE_MAX_ORDER option available. Drop it. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/csky/Kconfig | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index c694fac43bed..00379a843c37 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -332,10 +332,6 @@ config HIGHMEM select KMAP_LOCAL default y =20 -config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - default "10" - config DRAM_BASE hex "DRAM start addr (the same with memory-section in dts)" default 0x0 --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 37F7DC6FD1D for ; Thu, 23 Mar 2023 09:24:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231674AbjCWJYJ (ORCPT ); Thu, 23 Mar 2023 05:24:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231664AbjCWJXB (ORCPT ); Thu, 23 Mar 2023 05:23:01 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63E7A21A01; Thu, 23 Mar 2023 02:22:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D7FC5B8201C; Thu, 23 Mar 2023 09:22:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F0E1C433AE; Thu, 23 Mar 2023 09:22:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563371; bh=Taw/mVGmMzfFA4/zjWlz+sOR+xqfdhkwF0DQ85nhoys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vRT1J299K8QpI00sxZv59CyczO6p0SWP1wcHAQk8mghcdKjhLznndromKwnUtlkrM SRWyev3rVk+6CoxTsdqVockaQN2ib+Nl4FHOvmR+E/SjJe1acNEz6Z4GFuyF6GLjfd NuLmQu+LCOGDTIOxUdJKu3y2Kol4WBMAdYu5dp+Zj49J79N9Gzs8fUFCVhMdAWtkR8 Ee5XTvH/Aq3cY4DQROJ2COFMOABNcorPOEkkywcg034jyqoHf/3OREMiGZ7q6+/cP7 pO8gCgPnpv6P2h41m6iFg7ve1OatfexcxvMd110cY4RS/B3xhHDbjx1NZErU4piC14 QCF+7aV9m+NqQ== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 05/14] ia64: don't allow users to override ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:47 +0200 Message-Id: <20230323092156.2545741-6-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" It is enough to keep default values for base and huge pages without letting users to override ARCH_FORCE_MAX_ORDER. Drop the prompt to make the option unvisible in *config. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/ia64/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0d2f41fa56ee..b61437cae162 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -202,8 +202,7 @@ config IA64_CYCLONE If you're unsure, answer N. =20 config ARCH_FORCE_MAX_ORDER - int "MAX_ORDER (10 - 16)" if !HUGETLB_PAGE - range 10 16 if !HUGETLB_PAGE + int default "16" if HUGETLB_PAGE default "10" =20 --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 AF1B7C6FD1C for ; Thu, 23 Mar 2023 09:24:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231303AbjCWJYO (ORCPT ); Thu, 23 Mar 2023 05:24:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231564AbjCWJXE (ORCPT ); Thu, 23 Mar 2023 05:23:04 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E9567A80; Thu, 23 Mar 2023 02:23:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CDC5C6256D; Thu, 23 Mar 2023 09:22:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26655C4339E; Thu, 23 Mar 2023 09:22:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563379; bh=qM1kqSfFKpsE4xKrdSQW7DvR4rxMPF3in5qEieKPeA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GE5krmZ0gXB70ofGbcBeOPtXQDLzzCQ6IeYGZ14v4R8jeHsrKel/M382hm7G8CAyY WSwNliNppBUKyln1dzxYxIiPKolESMW5XFmY5rNfSGZQQAt/ZPlFgjRt4zvvPNMsP1 btLklwizse4VYyFA8wBmdsJI/2Afc3xukaqL3fOqKJ4dUoiBP3w6a2I+4ipO2eYE6a If3yoskjdPy/OtjijJmM4uHLXAA675hSKZsojEik+P1JYu5Qdg0vJ0C2kUNi6SOZRO 1wa49ymgOshm7pgeknQKGF2zZjq0eXa0FzDHC5jxAfI6l1tXu9ebX6MaBUej00yf7+ 86ZKAZJa2UAfA== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 06/14] m68k: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:48 +0200 Message-Id: <20230323092156.2545741-7-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Geert Uytterhoeven Acked-by: Kirill A. Shutemov --- arch/m68k/Kconfig.cpu | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index c9df6572133f..e530bc8f240f 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -398,21 +398,23 @@ config SINGLE_MEMORY_CHUNK Say N if not sure. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" if ADVANCED + int "Order of maximal physically contiguous allocations" if ADVANCED depends on !SINGLE_MEMORY_CHUNK default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. =20 For systems that have holes in their physical address space this value also defines the minimal size of the hole that allows freeing unused memory map. =20 + Don't change if unsure. + config 060_WRITETHROUGH bool "Use write-through caching for 68060 supervisor accesses" depends on ADVANCED && M68060 --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 5FDC8C6FD1C for ; Thu, 23 Mar 2023 09:24:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230450AbjCWJYq (ORCPT ); Thu, 23 Mar 2023 05:24:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231649AbjCWJXc (ORCPT ); Thu, 23 Mar 2023 05:23:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30B45EFBB; Thu, 23 Mar 2023 02:23:07 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6572A62566; Thu, 23 Mar 2023 09:23:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4F5DC433A0; Thu, 23 Mar 2023 09:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563386; bh=2cBYSF+JamtgsUh/BOUyBseGRxUzFBktadFA1PpPvNk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OzqUXRJvV5cHhhxpEQ76d0VmU9uuByNR8pcfw0l9ZT0pUxGdp9gz7IOdJ66R8dqXw 5FnZFyrNaxWOzoSbHrQ6/ZDGPnxAxYDl2BnY+xWiqOGURfr9e2VkCnrr8L9Gbjfwpc HOlDenrpg4JUs2TFkXkOV7O5LYl6nEsPELlOlAv9iHXU4q5POu//gt+gKg5uP+Ny9L o5o1k5mpI2e+4t1Js33KwBaCT3bLrYzUiQxXWh1vfyrNCqFtV/ZQu1hQ/eSNGKtd31 PavpmOfvieMQUnvC+CwhHR9pKI4cbxwUVVA+Umw8wBJoMrORkoopTP9wnn/sWxuy4K eN/4aW2yBGF9Q== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 07/14] nios2: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:49 +0200 Message-Id: <20230323092156.2545741-8-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/nios2/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index 89708b95978c..fcaa6bbda3fc 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -45,16 +45,18 @@ menu "Kernel features" source "kernel/Kconfig.hz" =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" range 8 19 default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. + + Don't change if unsure. =20 endmenu =20 --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 68A18C761AF for ; Thu, 23 Mar 2023 09:25:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230179AbjCWJZR (ORCPT ); Thu, 23 Mar 2023 05:25:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230074AbjCWJYa (ORCPT ); Thu, 23 Mar 2023 05:24:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23FDA3C3B; Thu, 23 Mar 2023 02:23:17 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id BB204B82025; Thu, 23 Mar 2023 09:23:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6048AC4339E; Thu, 23 Mar 2023 09:23:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563394; bh=jzZSH15gj6TUOIsTCrO5L+I5me/Mb74Nnyc5QzApf2o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=opvYt+M6nVWy83Z/VnNrEAxA7GcoGHzEz8QYyBOSThR1uJN44T0NbsszAVqRkmb9A SFPedINEgAbnyJ/AKydoamZjo3WlyOV/lqEJmXHsxX31FbqFPcrUSqmaQWw7/Lavv0 pPumm6jkzkBxu2g5cEsCaVlcJS4bENKkkFc8Cz2Wz6eQKaxqTYIhIRxBQoMF2g89v5 DZ2t+8xW5kCcFwoLehAHXimJZXVI3kEvMEYcvGsn+KOl1TSwgvlKsnJ9ypkWw+7GOc VfD+ftLkOkIQYp64EjA4dBOMp2fQX797VTwRK697fAL4dXiohtz60VzvDWHmWbnAxZ 3F3FrUCphxRGg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 08/14] nios2: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:50 +0200 Message-Id: <20230323092156.2545741-9-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" nios2 defines range for ARCH_FORCE_MAX_ORDER allowing MAX_ORDER up to 19, which implies maximal contiguous allocation size of 2^19 pages or 2GiB. Drop bogus definition of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible default. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/nios2/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index fcaa6bbda3fc..e5936417d3cd 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -46,7 +46,6 @@ source "kernel/Kconfig.hz" =20 config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" - range 8 19 default "10" help The kernel page allocator limits the size of maximal physically --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 38660C6FD1D for ; Thu, 23 Mar 2023 09:25:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231521AbjCWJZh (ORCPT ); Thu, 23 Mar 2023 05:25:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231455AbjCWJYn (ORCPT ); Thu, 23 Mar 2023 05:24:43 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B27B20077; Thu, 23 Mar 2023 02:23:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3C378B82027; Thu, 23 Mar 2023 09:23:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 041DAC433A7; Thu, 23 Mar 2023 09:23:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563402; bh=/lzhNRYztJj1ouQRj918klLWnmAPsjZfq5Hpj2i7B9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S9vNGrWjED3wIll6kE/hVbqtHfO9MyT/Hu6xNL8puEW0xDcgPxTscIk7hCO4DRRC5 ilO3FYhi6cQgQK9M7F6iTKF9trHSwbxr5hoJkfZj7dH58LZn2C0zHeNgnNbtsmUQtM hIsslwy+kW7OQFFbsPJLGsP2YYNhAjYKRraZceOdAm6m8c5i1/UJ1zDvaAj33xmKbC 6w6+dB64eKtu7qOhgcaxRaogkiGRFH33MjiIPbCNMShREvrHFXffR8koK71/C5/yo0 J7tSw2rFHv3JNHd4XhC8LmXab+nvHt/80GpNUDwm9bN1QeR0YrOvlmBRd2KSSdSgQA DNJeKxdyXaYug== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 09/14] powerpc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:51 +0200 Message-Id: <20230323092156.2545741-10-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/powerpc/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 24d56536b269..c0095bf795ca 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -896,7 +896,7 @@ config DATA_SHIFT 8M pages will be pinned. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" range 7 8 if PPC64 && PPC_64K_PAGES default "8" if PPC64 && PPC_64K_PAGES range 12 12 if PPC64 && !PPC_64K_PAGES @@ -910,17 +910,19 @@ config ARCH_FORCE_MAX_ORDER range 10 63 default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. =20 The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep this in mind when choosing a value for this option. =20 + Don't change if unsure. + config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages (subpage_prot syscall)" default n --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 181B5C77B60 for ; Thu, 23 Mar 2023 09:25:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231143AbjCWJZu (ORCPT ); Thu, 23 Mar 2023 05:25:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229379AbjCWJZB (ORCPT ); Thu, 23 Mar 2023 05:25:01 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 417F42004A; Thu, 23 Mar 2023 02:23:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E652BB8202F; Thu, 23 Mar 2023 09:23:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 922B2C4339E; Thu, 23 Mar 2023 09:23:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563409; bh=mp6A6C8OOeS6nY+QDsN8wj88cRjFdHtJCyFT1kANL6s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vf+DqdFMjEwSbPC+mJj235EVrBbgYDeFMYHxHYwKEoJX6x2hG7Nd6wUFlTriUV+ju Ki+QZQPrDtM2ZM/upW1C91O6NowwP2geqJok0JmWq2H72w6qScQsAHBP450KPi50O8 GnVm52Ym3n9y0567PryZU/4PnsUtdUTXIfj7RKzU4XtAIIDfvODMlcqYrijMGf+xdU xlmiAvGgCuUdAQV6JuFcTkmxtOYvFB1YsVPqzbZtVOz+BNwl7EUfScn+rtw/Gn/cvW hcHl/dApeHp57bvQnfEJzFI6X2ZwwbySWtQPm/oSj5a+4/6CqZV3+pdT8sT7oM/zlU LyHhQhr8mNFeQ== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 10/14] powerpc: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:52 +0200 Message-Id: <20230323092156.2545741-11-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" PowerPC defines ranges for ARCH_FORCE_MAX_ORDER some of which are insanely allowing MAX_ORDER up to 63, which implies maximal contiguous allocation size of 2^63 pages. Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible defaults. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/powerpc/Kconfig | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index c0095bf795ca..419be4a71004 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -897,17 +897,11 @@ config DATA_SHIFT =20 config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" - range 7 8 if PPC64 && PPC_64K_PAGES default "8" if PPC64 && PPC_64K_PAGES - range 12 12 if PPC64 && !PPC_64K_PAGES default "12" if PPC64 && !PPC_64K_PAGES - range 8 63 if PPC32 && PPC_16K_PAGES default "8" if PPC32 && PPC_16K_PAGES - range 6 63 if PPC32 && PPC_64K_PAGES default "6" if PPC32 && PPC_64K_PAGES - range 4 63 if PPC32 && PPC_256K_PAGES default "4" if PPC32 && PPC_256K_PAGES - range 10 63 default "10" help The kernel page allocator limits the size of maximal physically --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 7DDB9C6FD1C for ; Thu, 23 Mar 2023 09:26:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229522AbjCWJ0T (ORCPT ); Thu, 23 Mar 2023 05:26:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbjCWJZM (ORCPT ); Thu, 23 Mar 2023 05:25:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AF51211D6; Thu, 23 Mar 2023 02:23:38 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C372562567; Thu, 23 Mar 2023 09:23:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D02FC433A8; Thu, 23 Mar 2023 09:23:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563417; bh=xyXXkPdOs/21dd9fXLx/1W3XAfw4Vm18klKPTzgLDlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GFFz5NaC+vrwnSCGIu6c0oHMBmH41+j5nnZFHvFRMqQaOnlu8zCF23yQp8LqpSUt6 Qu329MdHdt1bUT9fJK06PoV31PmGAOtM86VmGGT1ePi7NlfJEiWbMRrc+lyLqcxUaC g3wJxdZ/KGyisazSl2iXmhi5XAujfAaBfhSNzNxy9q7dxCJ4yRuzdekruueK/KJns7 E9Xbl9WHZZsP+II+QP+PJH/FE+VWPnqb5Q0JLaSNy+ppD59eLK0NEmcrtk4Jwx7jp8 pagmMXBYAzaV+b1cDmcUqxElrUp+xt0+aQe1ggmHaoGesSG3y9jUY6DZ+ry7M/kiwn JU/N4Vy1Mv7nQ== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 11/14] sh: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:53 +0200 Message-Id: <20230323092156.2545741-12-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/sh/mm/Kconfig | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 40271090bd7d..fb15ba1052ba 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -19,8 +19,7 @@ config PAGE_OFFSET default "0x00000000" =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - range 8 63 if PAGE_SIZE_16KB + int "Order of maximal physically contiguous allocations" default "8" if PAGE_SIZE_16KB range 6 63 if PAGE_SIZE_64KB default "6" if PAGE_SIZE_64KB @@ -28,16 +27,18 @@ config ARCH_FORCE_MAX_ORDER default "13" if !MMU default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. =20 The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option. =20 + Don't change if unsure. + config MEMORY_START hex "Physical memory start address" default "0x08000000" --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 BF6BFC6FD1D for ; Thu, 23 Mar 2023 09:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231455AbjCWJ0l (ORCPT ); Thu, 23 Mar 2023 05:26:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47314 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231654AbjCWJZs (ORCPT ); Thu, 23 Mar 2023 05:25:48 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87340227A0; Thu, 23 Mar 2023 02:23:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 29E24B8202F; Thu, 23 Mar 2023 09:23:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD746C4339C; Thu, 23 Mar 2023 09:23:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563424; bh=99+9gRXuNZGZrnvJd+Y1nZy5usyv3NMBBGlXNWMVJhs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fSSowVKku6I+4khALqKcaWeFjf1TxQwq6N17YCC7lSQQq1PMKZNZXR6Amg8KHBCln 8D1+czeovKFYgk9ba7AwrEOWdx4T4TvSidUG4w0oEnP7Ux2idkiveTG5RuhNH001uj ZH2wbqVR6pwA72IlRr0A0Vm+Px75ZhuzsapmFJ4MJUx20c6j0uj+d4nkaYltR2HdGP LBmRDMYlYeROh4iX+5zaZEFyfMPZyDOym4GBzHOPHNe4Rg7MF0KLgYOBU/kY0U7tEp 2qhz4vjT8nOntJZetWtWrbF6J0wrO+fnxdSyIdjlEGw6E/HBeJt9B+RUXXoHM7dYWp 7S274GLZIA5Jg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 12/14] sh: drop ranges for definition of ARCH_FORCE_MAX_ORDER Date: Thu, 23 Mar 2023 11:21:54 +0200 Message-Id: <20230323092156.2545741-13-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" sh defines insane ranges for ARCH_FORCE_MAX_ORDER allowing MAX_ORDER up to 63, which implies maximal contiguous allocation size of 2^63 pages. Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a simple integer with sensible defaults. Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will be able to do so but they won't be mislead by the bogus ranges. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/sh/mm/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index fb15ba1052ba..511c17aede4a 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -21,9 +21,7 @@ config PAGE_OFFSET config ARCH_FORCE_MAX_ORDER int "Order of maximal physically contiguous allocations" default "8" if PAGE_SIZE_16KB - range 6 63 if PAGE_SIZE_64KB default "6" if PAGE_SIZE_64KB - range 10 63 default "13" if !MMU default "10" help --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 EBBF2C6FD1C for ; Thu, 23 Mar 2023 09:27:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230416AbjCWJ1E (ORCPT ); Thu, 23 Mar 2023 05:27:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230310AbjCWJ02 (ORCPT ); Thu, 23 Mar 2023 05:26:28 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A24541E1DF; Thu, 23 Mar 2023 02:23:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E71C362566; Thu, 23 Mar 2023 09:23:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57854C433A0; Thu, 23 Mar 2023 09:23:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563432; bh=h6B+59Tw/wfggMAxASThb2CqM8SDBv67+wW2LDMN9Jw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bXT7tVFQRhfcw151cmushy4biLsPbWo6PzWcZLPclsdZZu0AHI/gHXPCin5Sg9iiA 2jk1L0YVy7Qe/xDRPG5nOHZxPuEwCxatggeE5zw2R5dQXNP451ThM1w/k3c6D25V2O N+fe/J9ocQzrTj5ZRLDbYNoj8L7Fg7BoJUvOHZovfKRiaVzD97DUE5sICsn6MFA/LY pi2Jmg0MAtEvLy9L7TPVXS9dEOiqkceSsUxLk5XOUJZY6EZeficShFvwWbnG3PVgeZ ReZTduniWcIdQc0MmOkZSG5un3YfSersJkiDN7rNBFhp80ssYVvFAzH/URVEBtzC7R bB6ljs+LiityQ== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 13/14] sparc: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:55 +0200 Message-Id: <20230323092156.2545741-14-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov --- arch/sparc/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index e3242bf5a8df..959e43a1aaca 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -270,15 +270,17 @@ config ARCH_SPARSEMEM_DEFAULT def_bool y if SPARC64 =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" default "12" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. + + Don't change if unsure. =20 if SPARC64 || COMPILE_TEST source "kernel/power/Kconfig" --=20 2.35.1 From nobody Sat Feb 7 15:21:49 2026 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 34D7EC6FD1D for ; Thu, 23 Mar 2023 09:27:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231417AbjCWJ1T (ORCPT ); Thu, 23 Mar 2023 05:27:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231292AbjCWJ0e (ORCPT ); Thu, 23 Mar 2023 05:26:34 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46A8B23329; Thu, 23 Mar 2023 02:24:05 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 47B10B82035; Thu, 23 Mar 2023 09:24:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4E88C433A8; Thu, 23 Mar 2023 09:23:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679563440; bh=cLED8RkguNRC7M0dLtOL32lQLdxQxLek8h+Azi/Gy6Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WIWeaGhkdAVAFsei9Bza8wkj6njjW2uuNU19Ix52dZIy4kTovKxu2Yzdc1Dz5INgk 6Pg8B0dxqUnQqAGPRddvXBDr04oxwsZgfgMfgJcU2jrpRxwEnlQEkRrI1EaXpZ/Sd3 J1R1AHdgpJEjig/ZCiDv6lRb6moY7coIH3tSLS9pooMmPjppzT+nQQhT/DWOAlRgqO qm0cc8RB1yphHkpFQoCij3s1dldJDU1nXnNLUsJgMOQ4HfK7QoHZuhf2AiVIoE2wS5 yFRQUoFek2mX0QhpEnHG0I8VwxyFZGYOyQDQfZMNp/sVEaoPdJET5/f6iAfGlVUfv5 tjTM9P6gnulFg== From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , John Paul Adrian Glaubitz , "Kirill A. Shutemov" , Max Filippov , Michael Ellerman , Mike Rapoport , Rich Felker , Russell King , Will Deacon , Yoshinori Sato , Zi Yan , linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 14/14] xtensa: reword ARCH_FORCE_MAX_ORDER prompt and help text Date: Thu, 23 Mar 2023 11:21:56 +0200 Message-Id: <20230323092156.2545741-15-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230323092156.2545741-1-rppt@kernel.org> References: <20230323092156.2545741-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (IBM)" The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to describe this configuration option. Update both to actually describe what this option does. Signed-off-by: Mike Rapoport (IBM) Acked-by: Kirill A. Shutemov Reviewed-by: Max Filippov --- arch/xtensa/Kconfig | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3eee334ba873..3c6e5471f025 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -772,15 +772,17 @@ config HIGHMEM If unsure, say Y. =20 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" + int "Order of maximal physically contiguous allocations" default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. + + Don't change if unsure. =20 endmenu =20 --=20 2.35.1