From patchwork Fri Mar 24 05:22:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13186418 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 081FBC6FD20 for ; Fri, 24 Mar 2023 05:23:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231516AbjCXFXW (ORCPT ); Fri, 24 Mar 2023 01:23:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231446AbjCXFXK (ORCPT ); Fri, 24 Mar 2023 01:23:10 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96E121A65E; Thu, 23 Mar 2023 22:23:08 -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 12B3FB822E2; Fri, 24 Mar 2023 05:23:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1394BC4339B; Fri, 24 Mar 2023 05:22:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679635385; bh=9ATx9vtaxxZ78yfIvd/M2TJNWeGD41Uj539wCBrC8Ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GbLy/9J0iGr8pROsdzVEGDgszUavDtQ1QhgvcyzqJBfWTWlYAVh4pS+lkSRQI+yiF 2/8Fr6QPnWJMS0ILNRzNCn0eg32Xwj2hgzteehjPgUa6QOtZ9VUDMQSD4mOjShn24P dJVvEm5KIBhsd05g2eFR+KwAGSwBLYzu/vFe0mrSZn3j7VUxcXwIqtbe6X+6w95ff8 QtWIdUH1LnfbU1+deWp70VehsdMSkgTK8N7RkuYuYak8iKr7lfCLXhjJ18DyoiyuhU 9NmDjaUo5hDv9hr8fEuoYbS6U/bVOtaRlU22/AlwnH1UVeVdZUqBI73IlLfSmCEkN7 ZtEiKa7YaBYLQ== 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 v2 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER Date: Fri, 24 Mar 2023 08:22:21 +0300 Message-Id: <20230324052233.2654090-3-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230324052233.2654090-1-rppt@kernel.org> References: <20230324052233.2654090-1-rppt@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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 and make its prompt visible only if EXPERT=y Signed-off-by: Mike Rapoport (IBM) --- arch/arm64/Kconfig | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e60baf7859d1..7324032af859 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1487,11 +1487,9 @@ 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 "Maximum zone order" if EXPERT && (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