Received: by 2002:a25:ef43:0:0:0:0:0 with SMTP id w3csp223488ybm; Thu, 28 May 2020 21:23:17 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzzFpsL2FLZGytfOvVqjz12HZjRR8lAsqy+lj+M4zedlwErCEl7iR8GukB6I1on677cY59e X-Received: by 2002:a17:907:9d8:: with SMTP id bx24mr5853512ejc.517.1590726197797; Thu, 28 May 2020 21:23:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1590726197; cv=none; d=google.com; s=arc-20160816; b=rSAtVauSGoZfgxx5lmzDU1fPDt2tYZ9HBrj8hxVBWgSJKzQAxANh4IA+zeK7cRnU+M qhOOsSvhxLVuVvNYX3WgNUgkmbK3ZANuUdB5tgdD24R5CkigeQ0u5VGnd0pvLO6dNeR0 Obr+Ed3bOqxDCTyiApVgH8g7qc9PskSkP/yws9OrQAxJYAMGblhMr2dh+ysXijDctpRG /jhiykKYKt8NeaPnVJV2AREu+fZ73Hw92CypklpflBRDtKO2F6illleH4/R3h5QxhVNK LCe2GDUPdijdd90a//tO4GlrIMdil+ZTJbVdeCgjR97Cmt6kiMSYqdnyn+xQPaUIAQ8D AZgg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:date:message-id:subject:cc:from:to :in-reply-to; bh=fJ7/9SbiVt2dUCNc4pZYd0icvMDlpx0x3o0O20Nb/Pg=; b=g6+5v+jATECAbVF02tON/2nW94DlF73AGohUUC7lsCwyYa5vI0qMApiLYqgaXzNIyE jA+Y2/DHsk3BN066PlA46Zr8xkOw/6KzSIxEH5vETP8YJKOJiU2NKowITdDIdyRbD8xm l/g1J3rVyHax6es7IxktyqUPJAxgobyZC7L1i0vsLq2QGNt9/qe7ZQP0F5FYXR0HjITa lQ0dRny/0/jfpDL+Qb3BNh91gkACocrZ/9J5PHfyOhFt9EffIY8+AKk5eqtG+xW+7PpI fs2LxYFws5PchutwQhhHmPewSO80zvuS/u+E1ED6C4L5kAND+hpD/aITS70wXLSfTxp7 uiaA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id r27si2435076edl.187.2020.05.28.21.22.55; Thu, 28 May 2020 21:23:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728273AbgE2EUs (ORCPT + 99 others); Fri, 29 May 2020 00:20:48 -0400 Received: from ozlabs.org ([203.11.71.1]:49311 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728182AbgE2EU2 (ORCPT ); Fri, 29 May 2020 00:20:28 -0400 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) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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