From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D64A31E0481; Wed, 9 Oct 2024 16:27:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728491277; cv=none; b=Y6ltpNiu1NPm4Um6+xovLvWdU1nXkB4/Pv1raQTBbZWygSKH0gKFuNthUiGTm8uI5opnalgCAtV/Xi48RN3l29jg2X0h4nB9lnImkXRrsIPpLnpBpQDQNN6fx4ZeV+Nr4g9nu3nNxmxgXyg+GYGFwEc+J0TCsHGexMFSiOulj3s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728491277; c=relaxed/simple; bh=5IONwWAaygzDPnMaidc2cVsIS1VTE48ucYzxzIFEfRs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=czzc0gFI5J3ouR2ZvzD1TfZS/WkR98zbBZiLZxG2PqgrA2gg7zAZaO1raRT80X+UstvwayVAWPwCUm2I3gruHY+eB8qTg84urOyf3JoexTWcHRoEZT4HVRtSHAJ51654SnbYKQ6WHJwoDFoDw4USGG9It+rQdaF3FRKR/JUNLRI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=bApfItvi; arc=none smtp.client-ip=198.175.65.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="bApfItvi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728491276; x=1760027276; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=5IONwWAaygzDPnMaidc2cVsIS1VTE48ucYzxzIFEfRs=; b=bApfItviV/I1Z0u3zLELfP9Wianikem1TIuWehvTqQcVHqyYVuzfj5+g +MvVkBI/fTZoeCXa+1uw3Y5MdWjd28cDXio9OyszSKkqbWVStdvBVBfxi KB+PTelXv9yGxHIFssu3LaRt5R7G5PmEXMFuIcEBEuuUyzSdz+8g+A9Wa LlOeDj0XuDQmjfP8LRuwdNBEVFQOQwmMdrrNagfZki6mn/j8JoevqmMXY U2rDWhSU9qrkwJZ/2ZtI03IYpxz8iEus1GoVq37vQgPlFX5MLNjwmJGB4 PaVn2nntkhS5xZa84QHhKKKqRGDQgO0NGL/nS7msZo8Sv3wS6mIrfW3L5 A==; X-CSE-ConnectionGUID: EpHP8rbZSiu9n8Z57vJU9A== X-CSE-MsgGUID: my6SKx7dQh2nmUustK0M4w== X-IronPort-AV: E=McAfee;i="6700,10204,11220"; a="27923222" X-IronPort-AV: E=Sophos;i="6.11,190,1725346800"; d="scan'208";a="27923222" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2024 09:27:55 -0700 X-CSE-ConnectionGUID: oQoVtMfHTjmqz0Cmn1i1Zg== X-CSE-MsgGUID: CPHxacxfT/GicCpeJ5tzmQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,190,1725346800"; d="scan'208";a="80292162" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmviesa003.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2024 09:27:54 -0700 Date: Wed, 9 Oct 2024 09:33:44 -0700 From: Ricardo Neri To: Zhang Rui Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, rafael.j.wysocki@intel.com, x86@kernel.org, linux-pm@vger.kernel.org, hpa@zytor.com, peterz@infradead.org, thorsten.blum@toblux.com, yuntao.wang@linux.dev, tony.luck@intel.com, len.brown@intel.com, srinivas.pandruvada@intel.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH V2] x86/apic: Stop the TSC Deadline timer during lapic timer shutdown Message-ID: <20241009163344.GA25814@ranerica-svr.sc.intel.com> References: <20241009072001.509508-1-rui.zhang@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241009072001.509508-1-rui.zhang@intel.com> User-Agent: Mutt/1.9.4 (2018-02-28) On Wed, Oct 09, 2024 at 03:20:01PM +0800, Zhang Rui wrote: > This 12-year-old bug prevents some modern processors from achieving > maximum power savings during suspend. For example, Lunar Lake systems Two nits: > gets 0% package C-states during suspend to idle and this causes energy > star compliance tests to fail. s/gets/get/ s/energy start/Energy Star/