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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,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 C6D4EC433E2 for ; Fri, 29 May 2020 04:20:33 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A1E932074D for ; Fri, 29 May 2020 04:20:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A1E932074D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3A348800B7; Fri, 29 May 2020 00:20:30 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 32DDA800B6; Fri, 29 May 2020 00:20:30 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1D438800B9; Fri, 29 May 2020 00:20:30 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0151.hostedemail.com [216.40.44.151]) by kanga.kvack.org (Postfix) with ESMTP id DC045800B6 for ; Fri, 29 May 2020 00:20:29 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 95D8B282D for ; Fri, 29 May 2020 04:20:29 +0000 (UTC) X-FDA: 76868454978.03.knife64_43aa4fdda70e Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin03.hostedemail.com (Postfix) with ESMTP id 75CC528A4E8 for ; Fri, 29 May 2020 04:20:29 +0000 (UTC) X-HE-Tag: knife64_43aa4fdda70e X-Filterd-Recvd-Size: 1662 Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Fri, 29 May 2020 04:20:28 +0000 (UTC) Received: by ozlabs.org (Postfix, from userid 1034) id 49YBF610M2z9sSw; Fri, 29 May 2020 14:20:26 +1000 (AEST) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: b44f687386875b714dae2afa768e73401e45c21c In-Reply-To: To: Christophe Leroy , Benjamin Herrenschmidt , Paul Mackerras , airlied@linux.ie, daniel@ffwll.ch, torvalds@linux-foundation.org, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, keescook@chromium.org, hpa@zytor.com From: Michael Ellerman Cc: linux-arch@vger.kernel.org, linux-mm@kvack.org, intel-gfx@lists.freedesktop.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/5] drm/i915/gem: Replace user_access_begin by user_write_access_begin Message-Id: <49YBF610M2z9sSw@ozlabs.org> Date: Fri, 29 May 2020 14:20:25 +1000 (AEST) X-Rspamd-Queue-Id: 75CC528A4E8 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: On Fri, 2020-04-03 at 07:20:52 UTC, Christophe Leroy wrote: > When i915_gem_execbuffer2_ioctl() is using user_access_begin(), > that's only to perform unsafe_put_user() so use > user_write_access_begin() in order to only open write access. > > Signed-off-by: Christophe Leroy > Reviewed-by: Kees Cook Applied to powerpc topic/uaccess, thanks. https://git.kernel.org/powerpc/c/b44f687386875b714dae2afa768e73401e45c21c cheers