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 82051C25B4E for ; Sun, 22 Jan 2023 15:19:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231190AbjAVPTO (ORCPT ); Sun, 22 Jan 2023 10:19:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231208AbjAVPTO (ORCPT ); Sun, 22 Jan 2023 10:19:14 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A4BF2007E for ; Sun, 22 Jan 2023 07:19:13 -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 E30AA60C43 for ; Sun, 22 Jan 2023 15:19:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05ED3C4339B; Sun, 22 Jan 2023 15:19:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1674400752; bh=hDyQ6jL9C0Vo6/QLN8iUmNKMDaDpkuk2crett0tUP8E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IoZqoqSEeffYgdxOJ+qjfIF+v3LPVCCorTWfMfzaNjCnkoUmBGuz+ejL0KIq9Du69 iPC2q4el+WxO4UwZ/gZhEbjotFOAJpj3TKqkGcam24W7EjfsQjztPEG7vfzeWU4R68 kPGuz0VPi1kEwJq5DgdBbLr7yDtKjBB7JYXPvUeI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sasa Dragic , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Rodrigo Vivi Subject: [PATCH 5.15 094/117] drm/i915: re-disable RC6p on Sandy Bridge Date: Sun, 22 Jan 2023 16:04:44 +0100 Message-Id: <20230122150236.716572413@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230122150232.736358800@linuxfoundation.org> References: <20230122150232.736358800@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sasa Dragic commit 67b0b4ed259e425b7eed09da75b42c80682ca003 upstream. RC6p on Sandy Bridge got re-enabled over time, causing visual glitches and GPU hangs. Disabled originally in commit 1c8ecf80fdee ("drm/i915: do not enable RC6p on Sandy Bridge"). Signed-off-by: Sasa Dragic Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20221219172927.9603-2-sasa.dragic@gmail.com Fixes: fb6db0f5bf1d ("drm/i915: Remove unsafe i915.enable_rc6") Fixes: 13c5a577b342 ("drm/i915/gt: Select the deepest available parking mode for rc6") Cc: stable@vger.kernel.org Reviewed-by: Rodrigo Vivi (cherry picked from commit 0c8a6e9ea232c221976a0670256bd861408d9917) Signed-off-by: Rodrigo Vivi Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/i915_pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -401,7 +401,8 @@ static const struct intel_device_info il .has_coherent_ggtt = true, \ .has_llc = 1, \ .has_rc6 = 1, \ - .has_rc6p = 1, \ + /* snb does support rc6p, but enabling it causes various issues */ \ + .has_rc6p = 0, \ .has_rps = true, \ .dma_mask_size = 40, \ .ppgtt_type = INTEL_PPGTT_ALIASING, \