From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751423AbaETAR3 (ORCPT ); Mon, 19 May 2014 20:17:29 -0400 Received: from terminus.zytor.com ([198.137.202.10]:39835 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751074AbaETAR2 (ORCPT ); Mon, 19 May 2014 20:17:28 -0400 Message-ID: <537A9EFD.9050208@zytor.com> Date: Mon, 19 May 2014 17:17:01 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Borislav Petkov CC: Matt Fleming , Ingo Molnar , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, "Luck, Tony" Subject: Re: [GIT PULL] EFI changes for v3.16 References: <20140503130447.GW26088@console-pimps.org> <20140519105129.GF4798@console-pimps.org> <537A8A03.8060604@zytor.com> <20140519231012.GF6311@pd.tnic> In-Reply-To: <20140519231012.GF6311@pd.tnic> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/19/2014 04:10 PM, Borislav Petkov wrote: > > The question is, why can't that pstore mumbo jumbo go and do its dance > in !irq context? > > And how useful is the whole deal really, btw? I wanted to use it for > saving oopses into it, for example, but Tony said its write speed is > horribly low for that. > > So why do we even bother with this thing and do the dance in irq context > for it? Is it worth it at all? > I thought the whole point of allowing pstore in IRQ context was to write oopsen (panics?) -hpa