From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E09D0C11F66 for ; Tue, 29 Jun 2021 02:39:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBBAC61D0E for ; Tue, 29 Jun 2021 02:39:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231743AbhF2Cln (ORCPT ); Mon, 28 Jun 2021 22:41:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:34048 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231706AbhF2Clm (ORCPT ); Mon, 28 Jun 2021 22:41:42 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B525561D08; Tue, 29 Jun 2021 02:39:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1624934355; bh=2U/zUKy0sWMij0JlANJxis4SFX5DlLwfZYE18xDPxc0=; h=Date:From:To:Subject:In-Reply-To:From; b=Y92eZ1w8XkFwCDX02vBf0B9doJmvs06evVC+KK6Qoy3YdGySIxa9cmQAaHEN+HZZv 1mehkW1d8CnbHIpnYut5w9fjRoHc1tOYx1+OQwqz+18PiOzSp5Y59/Yv5b9f31FKx6 A9NDKtPT9tLCx25HIaB6dfrYcuKPTJtmnZja0oAI= Date: Mon, 28 Jun 2021 19:39:14 -0700 From: Andrew Morton To: akpm@linux-foundation.org, david@redhat.com, dbueso@suse.de, geert@linux-m68k.org, ldufour@linux.ibm.com, Liam.Howlett@Oracle.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find() Message-ID: <20210629023914.UwVt-_L7f%akpm@linux-foundation.org> In-Reply-To: <20210628193256.008961950a714730751c1423@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Liam Howlett Subject: x86/sgx: use vma_lookup() in sgx_encl_find() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-10-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett Reviewed-by: Laurent Dufour Acked-by: David Hildenbrand Acked-by: Davidlohr Bueso Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton --- arch/x86/kernel/cpu/sgx/encl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/sgx/encl.h~x86-sgx-use-vma_lookup-in-sgx_encl_find +++ a/arch/x86/kernel/cpu/sgx/encl.h @@ -91,8 +91,8 @@ static inline int sgx_encl_find(struct m { struct vm_area_struct *result; - result = find_vma(mm, addr); - if (!result || result->vm_ops != &sgx_vm_ops || addr < result->vm_start) + result = vma_lookup(mm, addr); + if (!result || result->vm_ops != &sgx_vm_ops) return -EINVAL; *vma = result; _