From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yasuaki Ishimatsu Subject: Re: [PATCH] x86, efi: change name of efi_no_storage_paranoia parameter to efi_storage_paranoia Date: Tue, 19 Nov 2013 12:03:41 +0900 Message-ID: <528AD50D.6060503@jp.fujitsu.com> References: <527C93B5.7010407@jp.fujitsu.com> <527C9B5C.6040509@nod.at> <527CB013.30200@jp.fujitsu.com> <527CB0F4.8080606@nod.at> <527CBC05.6080505@jp.fujitsu.com> <527CBD01.1000908@nod.at> <527CBDD3.2020609@jp.fujitsu.com> <20131108143421.GB22636@console-pimps.org> <52809AEB.9080100@jp.fujitsu.com> <20131111105424.GD22636@console-pimps.org> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20131111105424.GD22636-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matt Fleming Cc: Richard Weinberger , linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org, jlee-IBi9RG/b67k@public.gmane.org List-Id: linux-efi@vger.kernel.org Hi Matt, Sorry for late the reply. (2013/11/11 19:54), Matt Fleming wrote: > On Mon, 11 Nov, at 05:52:59PM, Yasuaki Ishimatsu wrote: >> Hi Matt, >> >> I uses FUJITSU's x86 box. >> This does not become bricked even if I use all efi variable storage. >> Thus I want a way to not need to specify efi_no_storage_paranoia >> parameter. > > The efi_no_storage_paranoia parameter was introduced because some > machines do not initiate garbage collection of the NVRAM until you > allocate all space - basically it's a switch to turn off the "save 5KB > of stoarge at all times" workaround that is needed to avoid bricking > some machines. > > The intention of the switch is not to allow you to fill your NVRAM just > because you can. If that is something you want to do then I think it's > fair to require you to explicitly turn on efi_no_storage_paranoia. But > I'm assuming here that you are doing something like writing lots and > lots of pstore entries and just want to write as many as your variable > storage will allow? Or are you doing something more fundamental like > creating BootXXXX entries? > > What are you doing to run into the 5KB reserve? How much NVRAM does your > machine come with? I just add boot entry to NVRAM by efibootmgr command. But when Linux boots up, the remaining NVRAM is less than 5Kbyte. So I cannnot add new entry. Thanks, Yasuaki Ishimatsu