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=-3.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT 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 A10F7C65C20 for ; Mon, 8 Oct 2018 14:49:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59E912085B for ; Mon, 8 Oct 2018 14:49:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Rp75+3NQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 59E912085B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726689AbeJHWBY (ORCPT ); Mon, 8 Oct 2018 18:01:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:44560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726159AbeJHWBY (ORCPT ); Mon, 8 Oct 2018 18:01:24 -0400 Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC69C2085B; Mon, 8 Oct 2018 14:49:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1539010159; bh=MELPN+DG+xKjsse7OW7DCZ1Qthkf1UtQts5dIjorlAI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Rp75+3NQ0ufEZfXUoJELTBv1vBFedMnJ1fo412XvwIYR86zZQTGq/ec5LJy6JYvGU uNRhZ7k/WCeoqbROAvhVgq1xkiM1smHen9HOMFn86koQ0yk3ZEwdgM5IeyrGLksw3U QVLMAJC3r5K1v8bbcui7TqigaOCO/iLyd54boDVo= Date: Mon, 8 Oct 2018 10:49:17 -0400 From: Sasha Levin To: "Deucher, Alexander" Cc: Greg Kroah-Hartman , "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" , "Wentland, Harry" , "Zhu, Rex" , Sasha Levin Subject: Re: [PATCH 4.18 222/235] drm/amd/pp: Send khz clock values to DC for smu7/8 Message-ID: <20181008144917.GE32006@sasha-vm> References: <20180924113103.999624566@linuxfoundation.org> <20180924113125.488862921@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 08, 2018 at 02:33:56PM +0000, Deucher, Alexander wrote: >> -----Original Message----- >> From: Greg Kroah-Hartman >> Sent: Monday, September 24, 2018 7:53 AM >> To: linux-kernel@vger.kernel.org >> Cc: Greg Kroah-Hartman ; >> stable@vger.kernel.org; Wentland, Harry ; >> Deucher, Alexander ; Zhu, Rex >> ; Sasha Levin >> Subject: [PATCH 4.18 222/235] drm/amd/pp: Send khz clock values to DC for >> smu7/8 >> >> 4.18-stable review patch. If anyone has any objections, please let me know. >> > >This regresses power usage on 4.18. Please revert. >https://bugzilla.kernel.org/show_bug.cgi?id=201275 Hi Alex, Thank you for the report. I'm working on improving this process, I'd be very grateful if you could answer a few questions about this: 1. Is the same breakage seen upstream? (if so, it should be reverted there as well and we can grab the revert into -stable). 2. Does the issue reported by this patch ("pipes seem to hang with a 4k DP and 1080p HDMI display") exist in the 4.18 stable tree? 3. If not, could you briefly explain why? The algorithm I use was very confident about this patch being stable material, and when I looked at it back then (and again now) I was very confident of the same. If I can understand where I was wrong I could improve my process. Thank you!