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 4B904C64ED6 for ; Mon, 27 Feb 2023 17:59:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230486AbjB0R7B (ORCPT ); Mon, 27 Feb 2023 12:59:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230294AbjB0R6Q (ORCPT ); Mon, 27 Feb 2023 12:58:16 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 792E8269E; Mon, 27 Feb 2023 09:57:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=dtiP3hUvA6nDur052lXOuZXkJQbzfHLCDQRu6Y0/CbA=; b=XBOe25D8ILBHFTarSSJcSeNA9I 1ho9edMN4WMOW+STKHU1Fjrea3rZodyLYFfxge7XDJMmfzMLJ5pCij5ce+T8U8wF/UdpEm7/Bz/qs 9nM2/FbCHKKykm8iTTCuAlGyTgQE/GycxrAz4ODI7DXc3tJUA+rJSGPORBHP1Q1tDn6els/rAcXNu nyYSpLPPd/TdxuXWCWgvTme17TJDDIgRhLDaoyZ4+jc4P1FBu1uKCgWDbTmRzt9YGRbp3MINfC48D n14ezuCiX8fXSt33c5Q2tTPA1dQpdTi3Rtl9mrNc5frwFSRQaNc0nMoT7sy55aFkqJjuw/TB8oH1V MaBmNMxg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pWhkw-000IYY-7M; Mon, 27 Feb 2023 17:57:46 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-arch@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, Richard Weinberger , Anton Ivanov , Johannes Berg , linux-um@lists.infradead.org Subject: [PATCH v2 24/30] um: Implement the new page table range API Date: Mon, 27 Feb 2023 17:57:35 +0000 Message-Id: <20230227175741.71216-25-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230227175741.71216-1-willy@infradead.org> References: <20230227175741.71216-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add set_ptes() and update_mmu_cache_range(). Signed-off-by: Matthew Wilcox (Oracle) Cc: Richard Weinberger Cc: Anton Ivanov Cc: Johannes Berg Cc: linux-um@lists.infradead.org --- arch/um/include/asm/pgtable.h | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h index a70d1618eb35..ca78c90ae74f 100644 --- a/arch/um/include/asm/pgtable.h +++ b/arch/um/include/asm/pgtable.h @@ -242,12 +242,20 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval) if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr); } -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *pteptr, pte_t pteval) +static inline void set_ptes(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned int nr) { - set_pte(pteptr, pteval); + for (;;) { + set_pte(ptep, pte); + if (--nr == 0) + break; + ptep++; + pte_val(pte) += PAGE_SIZE; + } } +#define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) + #define __HAVE_ARCH_PTE_SAME static inline int pte_same(pte_t pte_a, pte_t pte_b) { @@ -290,6 +298,7 @@ struct mm_struct; extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); #define update_mmu_cache(vma,address,ptep) do {} while (0) +#define update_mmu_cache_range(vma, address, ptep, nr) do {} while (0) /* * Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that -- 2.39.1