From nobody Sun Feb 8 21:47:06 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 DE297C0015E for ; Wed, 26 Jul 2023 09:53:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233808AbjGZJw5 (ORCPT ); Wed, 26 Jul 2023 05:52:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231674AbjGZJw2 (ORCPT ); Wed, 26 Jul 2023 05:52:28 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DDDFB2D67 for ; Wed, 26 Jul 2023 02:52:07 -0700 (PDT) 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 6C4B9169C; Wed, 26 Jul 2023 02:52:50 -0700 (PDT) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.26]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 30CED3F67D; Wed, 26 Jul 2023 02:52:05 -0700 (PDT) From: Ryan Roberts To: Andrew Morton , Matthew Wilcox , Yin Fengwei , David Hildenbrand , Yu Zhao , Catalin Marinas , Will Deacon , Anshuman Khandual , Yang Shi , "Huang, Ying" , Zi Yan , Luis Chamberlain , Itaru Kitayama Cc: Ryan Roberts , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 3/5] arm64: mm: Override arch_wants_pte_order() Date: Wed, 26 Jul 2023 10:51:44 +0100 Message-Id: <20230726095146.2826796-4-ryan.roberts@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230726095146.2826796-1-ryan.roberts@arm.com> References: <20230726095146.2826796-1-ryan.roberts@arm.com> 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" Define an arch-specific override of arch_wants_pte_order() so that when LARGE_ANON_FOLIO is enabled, large folios will be allocated for anonymous memory with an order that is compatible with arm64's contpte mappings. Reviewed-by: Yu Zhao Signed-off-by: Ryan Roberts --- arch/arm64/include/asm/pgtable.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgta= ble.h index 0bd18de9fd97..d00bb26fe28f 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1106,6 +1106,12 @@ extern pte_t ptep_modify_prot_start(struct vm_area_s= truct *vma, extern void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t old_pte, pte_t new_pte); + +#define arch_wants_pte_order arch_wants_pte_order +static inline int arch_wants_pte_order(void) +{ + return CONT_PTE_SHIFT - PAGE_SHIFT; +} #endif /* !__ASSEMBLY__ */ =20 #endif /* __ASM_PGTABLE_H */ --=20 2.25.1