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 204B6C64ED8 for ; Mon, 27 Feb 2023 17:58:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229862AbjB0R6m (ORCPT ); Mon, 27 Feb 2023 12:58:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230231AbjB0R6L (ORCPT ); Mon, 27 Feb 2023 12:58:11 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FD5BC2; Mon, 27 Feb 2023 09:57:49 -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=fpcPwGn1cnZkifuBnwEfVFMB8mrQdavgisIkUPDNgF0=; b=BPvJtFBXN5FBI3a+YdN/S+KXij CZC8/u9DVo/Jz2rikzcHYdR9c2R6G5GvkYUW1rY20m/CxR8T9HVedX/AMYVAYCyoWzbC6+7POOhKp bM0vmU+9cIf1jMUR8zuMVaImiRY1qglepGK8RTFQLlGlB8E62VOqb2+KMuMKAcNYqOcEGvIGOa9qH +0hBslig/tp4FzJr1ARvRtcgvDi3ZucOaB1+/JAUtZOZlMHdqNd1N7yf9HKbjbM0VgJ20KEVs9ECg Buy6noityfK1azMHwiTgSqn9+6o1Xez817HEYWztVxExzt8hVeVFhLGF0PvtxwqQJ61XZrr/hKn6V IIWZBuFg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pWhkw-000IYd-B3; 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, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" Subject: [PATCH v2 25/30] x86: Implement the new page table range API Date: Mon, 27 Feb 2023 17:57:36 +0000 Message-Id: <20230227175741.71216-26-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 Convert set_pte_at() into set_ptes() and add a noop update_mmu_cache_range(). Signed-off-by: Matthew Wilcox (Oracle) Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: x86@kernel.org Cc: "H. Peter Anvin" --- arch/x86/include/asm/pgtable.h | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 84be3e07b112..f424371ea143 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1019,13 +1019,22 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp) return res; } -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pte) +static inline void set_ptes(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned int nr) { - page_table_check_ptes_set(mm, addr, ptep, pte, 1); - set_pte(ptep, pte); + page_table_check_ptes_set(mm, addr, ptep, pte, nr); + + for (;;) { + set_pte(ptep, pte); + if (--nr == 0) + break; + ptep++; + pte = __pte(pte_val(pte) + PAGE_SIZE); + } } +#define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) + static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd) { @@ -1291,6 +1300,10 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { } +static inline void update_mmu_cache_range(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, unsigned int nr) +{ +} static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd) { -- 2.39.1