linux-kernel - Re: [PATCH] x86, efi: change name of efi_no_storage_paranoia parameter to efi_storage

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Date:	Fri, 08 Nov 2013 09:05:48 +0100
From:	Richard Weinberger <richard@....at>
To:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
CC:	linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
	matt.fleming@...el.com, matthew.garrett@...ula.com, jlee@...e.com
Subject: Re: [PATCH] x86, efi: change name of efi_no_storage_paranoia parameter
 to efi_storage_paranoia

Am 08.11.2013 08:33, schrieb Yasuaki Ishimatsu:
> By following works, my system very often fails set_variable() to set new
> variable to efi variable storage and shows "efivars: set_variable() failed:
> status=-28" message.
> 
> - commit 31ff2f20d9003e74991d135f56e503fe776c127c
>     efi: Distinguish between "remaining space" and actually used space
> - commit 8c58bf3eec3b8fc8162fe557e9361891c20758f2
>     x86,efi: Implement efi_no_storage_paranoia parameter
> - commit f8b8404337de4e2466e2e1139ea68b1f8295974f
>     Modify UEFI anti-bricking code
> 
> When booting my system, remaining space of efi variable storage is about
> 5KB. So there is no room that sets a new variable to the storage.
> 
> According to above works, efi_no_storage_paranoia parameter was prepared
> for sane UEFI which can do gc and fulfills spec. But why need a system
> with a sane UEFI set the parameter? It is wrong. A system with a broken
> UEFI should set the parameter.

And how does one know that his UEFI is broken?
"Oh my board is briked because I wrote too much into a variable, maybe setting
efi_storage_paranoia would have saved me. Let's try with the next board..." ;)

Thanks,
//richard
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