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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F7AEC433FE for ; Mon, 3 Oct 2022 07:17:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B2D8C8E0001; Mon, 3 Oct 2022 03:17:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id ADD7D6B0073; Mon, 3 Oct 2022 03:17:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9A4A98E0001; Mon, 3 Oct 2022 03:17:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 869576B0072 for ; Mon, 3 Oct 2022 03:17:24 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 39BB2160BA1 for ; Mon, 3 Oct 2022 07:17:24 +0000 (UTC) X-FDA: 79978782408.01.E8B90DB Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf29.hostedemail.com (Postfix) with ESMTP id 74A16120003 for ; Mon, 3 Oct 2022 07:17:23 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 11D0367373; Mon, 3 Oct 2022 09:17:19 +0200 (CEST) Date: Mon, 3 Oct 2022 09:17:18 +0200 From: Christoph Hellwig To: Al Viro Cc: ira.weiny@intel.com, Jens Wiklander , Sumit Garg , Andrew Morton , "Fabio M. De Francesco" , Christoph Hellwig , Linus Torvalds , op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 3/4] tee: Remove call to get_kernel_pages() Message-ID: <20221003071718.GA1986@lst.de> References: <20221002002326.946620-1-ira.weiny@intel.com> <20221002002326.946620-4-ira.weiny@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=none; spf=none (imf29.hostedemail.com: domain of hch@lst.de has no SPF policy when checking 213.95.11.211) smtp.mailfrom=hch@lst.de; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1664781443; a=rsa-sha256; cv=none; b=AaL6k7F6USR/YIACqjhN1SLKnv1ML+MgUofupnsW1cl0UMtFupFZ8qYGwmvGoRrC1cm+yL bqLPUl5db47xZDc8FJUYxQ0oYyslD/DdxWXXv7FgiHWyZrxpkA/7WW/kYZ5uSZaiN6PPBg zKO+8JPz7HwcA/mZDxQpIH1vYYH1v1Q= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664781443; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gJjAzJTy7F//tKwmqTw8NKLQ7xCV4wbOtDc5MWiaayo=; b=cG6hD5Krvf2zDF4KbVadd+UeaxO8hdGIe0K4RsmKdgFfbpegTxLzHUOsROYaetH26Do9tL jApTSLM+o2gk8TAEO71N+QRfzqcoLEt2PPRylxeSkqR643E4LOjZf/4LIv1dDzQK6e/VbG Io/X98Pr+gqod7eAmfJ+2rmZ1p2j8dw= X-Stat-Signature: s5xbmpfpx78usrxqmng7nesmmo6thgae X-Rspamd-Queue-Id: 74A16120003 Authentication-Results: imf29.hostedemail.com; dkim=none; spf=none (imf29.hostedemail.com: domain of hch@lst.de has no SPF policy when checking 213.95.11.211) smtp.mailfrom=hch@lst.de; dmarc=none X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1664781443-948978 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: On Sun, Oct 02, 2022 at 01:46:41AM +0100, Al Viro wrote: > IDGI. The only thing in kiov[...] you are every reading is > ->iov_base. And you fetch it once, right after the assignment. ... and that's exactly what I pointed out on the last version of the patch ...