From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932444AbdJZVTl (ORCPT ); Thu, 26 Oct 2017 17:19:41 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:35546 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751961AbdJZVTf (ORCPT ); Thu, 26 Oct 2017 17:19:35 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3330D607B5 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=pprakash@codeaurora.org Subject: Re: [PATCH v5 2/2] ACPI / CPPC: Make cppc acpi driver aware of pcc subspace ids To: George Cherian , devel@acpica.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: lv.zheng@intel.com, robert.moore@intel.com, jassisinghbrar@gmail.com, lenb@kernel.org, rjw@rjwysocki.net References: <1507712098-13035-1-git-send-email-george.cherian@cavium.com> <1507712098-13035-3-git-send-email-george.cherian@cavium.com> From: "Prakash, Prashanth" Message-ID: Date: Thu, 26 Oct 2017 15:19:32 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <1507712098-13035-3-git-send-email-george.cherian@cavium.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/11/2017 2:54 AM, George Cherian wrote: > Based on ACPI 6.2 Section 8.4.7.1.9 If the PCC register space is used, > all PCC registers, for all processors in the same performance > domain (as defined by _PSD), must be defined to be in the same subspace. > Based on Section 14.1 of ACPI specification, it is possible to have a > maximum of 256 PCC subspace ids. Add support of multiple PCC subspace id > instead of using a single global pcc_data structure. > > While at that fix the time_delta check in send_pcc_cmd() so that last_mpar_reset > and mpar_count is initialized properly. > > Signed-off-by: George Cherian Reviewed-by: Prashanth Prakash -- Thanks, Prashanth