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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D315FC433FE for ; Wed, 30 Nov 2022 17:44:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229780AbiK3Roz (ORCPT ); Wed, 30 Nov 2022 12:44:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229825AbiK3Roz (ORCPT ); Wed, 30 Nov 2022 12:44:55 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC7A75217D for ; Wed, 30 Nov 2022 09:44:53 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 487FC61D38 for ; Wed, 30 Nov 2022 17:44:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54103C433C1; Wed, 30 Nov 2022 17:44:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669830292; bh=wF/eMku3RmHC1j9PoJ81l+gjUYlPNg5AP3xYuMZjmY4=; h=Subject:To:Cc:From:Date:From; b=LwRyhct11So6T8u836INRCImgZKKXgh7YmtyjnMZKUzSGnrILeLSWSxj8wpeuXAZO j5hjG5pLfWtfLO+PbsYhMC0qbjZLqKP5aga6w+9w6X5igxC3jjAxRQBs27jaHKn9VN QCw1P481OhHau/zH4OZNeGJJ3J7CyQGDZVLutL7s= Subject: FAILED: patch "[PATCH] drm/i915: fix TLB invalidation for Gen12 video and compute" failed to apply to 4.9-stable tree To: andrzej.hajda@intel.com, chris.p.wilson@intel.com, daniel.vetter@ffwll.ch, torvalds@linux-foundation.org Cc: From: Date: Wed, 30 Nov 2022 18:44:42 +0100 Message-ID: <166983028216139@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Possible dependencies: 04aa64375f48 ("drm/i915: fix TLB invalidation for Gen12 video and compute engines") 33da97894758 ("drm/i915/gt: Serialize TLB invalidates with GT resets") 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") 1176d15f0f6e ("Merge tag 'drm-intel-gt-next-2021-10-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-next") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 04aa64375f48a5d430b5550d9271f8428883e550 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Mon, 14 Nov 2022 11:38:24 +0100 Subject: [PATCH] drm/i915: fix TLB invalidation for Gen12 video and compute engines In case of Gen12 video and compute engines, TLB_INV registers are masked - to modify one bit, corresponding bit in upper half of the register must be enabled, otherwise nothing happens. CVE: CVE-2022-4139 Suggested-by: Chris Wilson Signed-off-by: Andrzej Hajda Acked-by: Daniel Vetter Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index d0b03a928b9a..5c931b6696c3 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -1017,6 +1017,11 @@ static void mmio_invalidate_full(struct intel_gt *gt) if (!i915_mmio_reg_offset(rb.reg)) continue; + if (GRAPHICS_VER(i915) == 12 && (engine->class == VIDEO_DECODE_CLASS || + engine->class == VIDEO_ENHANCEMENT_CLASS || + engine->class == COMPUTE_CLASS)) + rb.bit = _MASKED_BIT_ENABLE(rb.bit); + intel_uncore_write_fw(uncore, rb.reg, rb.bit); awake |= engine->mask; }