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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no 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 5DB79C433E0 for ; Mon, 8 Jun 2020 04:42:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 234962081A for ; Mon, 8 Jun 2020 04:42:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="syFfQSa6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 234962081A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BD2EA6B00CC; Mon, 8 Jun 2020 00:42:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BA91A6B00CE; Mon, 8 Jun 2020 00:42:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A98A26B00CF; Mon, 8 Jun 2020 00:42:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0057.hostedemail.com [216.40.44.57]) by kanga.kvack.org (Postfix) with ESMTP id 8C9136B00CC for ; Mon, 8 Jun 2020 00:42:51 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 61FF4181ABEA1 for ; Mon, 8 Jun 2020 04:42:51 +0000 (UTC) X-FDA: 76904799342.07.mouth79_3f1452626db7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin07.hostedemail.com (Postfix) with ESMTP id 3DA50180C8046 for ; Mon, 8 Jun 2020 04:42:51 +0000 (UTC) X-HE-Tag: mouth79_3f1452626db7 X-Filterd-Recvd-Size: 2531 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf20.hostedemail.com (Postfix) with ESMTP for ; Mon, 8 Jun 2020 04:42:50 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E44662082F; Mon, 8 Jun 2020 04:42:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591591370; bh=y8SjHWafuk4WXgU1MWeioqsxNj8t/Lc27X7z1WfpDyk=; h=Date:From:To:Subject:In-Reply-To:From; b=syFfQSa6bcRBCRW7oGPIvqkYiQQZkWkxXoWzCp5CiY+makPLcl8UvRz5f2vXYuK8e fi0z7r3Ys+iJpYNnjBcukMmMDLGDgxwm2bu0mNqwnce58eIrGj7AlTL5yNDvtQUt39 t6tj/jsYc9oq5b9ERgkrjQzruMl3pyQn79icVDhc= Date: Sun, 07 Jun 2020 21:42:49 -0700 From: Andrew Morton To: akpm@linux-foundation.org, geert@linux-m68k.org, gerg@linux-m68k.org, hch@lst.de, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 52/54] nommu: use flush_icache_user_range in brk and mmap Message-ID: <20200608044249.uBaIItegb%akpm@linux-foundation.org> In-Reply-To: <20200607212615.b050e41fac139a1e16fe00bd@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 3DA50180C8046 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Christoph Hellwig Subject: nommu: use flush_icache_user_range in brk and mmap These obviously operate on user addresses. Link: http://lkml.kernel.org/r/20200515143646.3857579-29-hch@lst.de Signed-off-by: Christoph Hellwig Cc: Greg Ungerer Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton --- mm/nommu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/nommu.c~nommu-use-flush_icache_user_range-in-brk-and-mmap +++ a/mm/nommu.c @@ -433,7 +433,7 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) /* * Ok, looks good - let it rip. */ - flush_icache_range(mm->brk, brk); + flush_icache_user_range(mm->brk, brk); return mm->brk = brk; } @@ -1277,7 +1277,7 @@ share: /* we flush the region from the icache only when the first executable * mapping of it is made */ if (vma->vm_flags & VM_EXEC && !region->vm_icache_flushed) { - flush_icache_range(region->vm_start, region->vm_end); + flush_icache_user_range(region->vm_start, region->vm_end); region->vm_icache_flushed = true; } _