From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 3B1E88CC for ; Tue, 6 May 2014 15:44:10 +0000 (UTC) Received: from relay.parallels.com (relay.parallels.com [195.214.232.42]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id B9ADE1FD4A for ; Tue, 6 May 2014 15:44:09 +0000 (UTC) Message-ID: <53690340.4020007@parallels.com> Date: Tue, 6 May 2014 19:44:00 +0400 From: Pavel Emelyanov MIME-Version: 1.0 To: Chris Mason References: <53679974.60206@fb.com> <5368ECB7.50205@fb.com> In-Reply-To: <5368ECB7.50205@fb.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Cc: "ksummit-discuss@lists.linuxfoundation.org" Subject: Re: [Ksummit-discuss] [CORE TOPIC] [TECH TOPIC] live kernel patching List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 05/06/2014 06:07 PM, Chris Mason wrote: >>> Tons of interest in this topic here, mostly for the in-memory database >>> workloads. >> >> Would in-memory databases be happier if there were a way to kexec >> without losing your data? > > Yes, for these apps we could just define a chunk of ram that was > supposed to stay the same after kexec and they would be happy. +1, I'd be happy to have this as well. One question about the chunk of memory you want to preserve -- is it anonymous memory or part of a page cache? Thanks, Pavel