From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-o-1.desy.de ([131.169.56.154]:43658 "EHLO smtp-o-1.desy.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752838Ab3LMOky (ORCPT ); Fri, 13 Dec 2013 09:40:54 -0500 Received: from smtp-map-1.desy.de (smtp-map-1.desy.de [131.169.56.66]) by smtp-o-1.desy.de (DESY-O-1) with ESMTP id E86522805A5 for ; Fri, 13 Dec 2013 15:35:13 +0100 (CET) Received: from ZITSWEEP1.win.desy.de (zitsweep1.win.desy.de [131.169.97.95]) by smtp-map-1.desy.de (DESY_MAP_1) with ESMTP id D177313EC2 for ; Fri, 13 Dec 2013 15:35:12 +0100 (MET) Received: from smtp-intra-3.desy.de (lb-40-26.desy.de) by ZITSWEEP1.win.desy.de (Clearswift SMTPRS 5.5.0) with ESMTP id for ; Fri, 13 Dec 2013 15:35:12 +0100 Received: from [131.169.146.36] (mcspetros.desy.de [131.169.146.36]) by smtp-intra-3.desy.de (DESY-INTRA-3) with ESMTP id 348152D6E for ; Fri, 13 Dec 2013 15:35:12 +0100 (MET) Message-ID: <52AB1B20.3030105@desy.de> Date: Fri, 13 Dec 2013 15:35:12 +0100 From: Ludwig Petrosyan MIME-Version: 1.0 To: linux-pci@vger.kernel.org Subject: pciehp Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-pci-owner@vger.kernel.org List-ID: Hi All we are working at DESY (Deutsches Elektronen-Synchrotron, Hamburg Germany) and involved in evaluation of MTCA.4 standard (MTCA for Physics) I have question concerning PCIe hotplag: The Hot-Swap is working, I mean, if there was a PCIe endpoint card in the PCIe slot this module could be later removed and inserted back in running system. But if the Slot was empty and one insert the new PCIe endpoint card in slot, the card will be connected in PCIe bus (I could see it in lspci) but memory not enabled. Only after rebooting of the OS the memory will be enabled. For MTCA.4 standard it is very important to have possibility to add new PCIe endpoint card in running system. So, my question is: is there some OS boot parameter I could reserve memory for all PCIe ports which hase slot implemented (if slot implemented on the PCIe switch or RootComplex port this means later could be some PCIe endpoint card inserted) with best regards Ludwig Petrosyan