linux-kernel - Re: [PATCH] efi: be more paranoid about available space when creating variables

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Message-ID: <514F937C.9020203@gmail.com>
Date:	Mon, 25 Mar 2013 03:59:56 +0400
From:	Sergey Fionov <fionov@...il.com>
To:	Matthew Garrett <matthew.garrett@...ula.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] efi: be more paranoid about available space when creating
 variables

Hello.

My ASUS P8Z68-V PRO motherboard's UEFI cleans up EFI variables space
only if it is full when system boots.

So with this patch and 32kb of 64kb space used I can't use efibootmgr
to create new boot entries until EFI variables space become full and
then is cleaned up by UEFI.

It can be done only with 10 reboots (every boot uses 3 kilobytes of
EFI variables space) or patched efivars module.

I think it is a regression.

wbr,
Sergey.
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