linux-kernel - Re: [PATCH] efivars: Allow disabling use as a pstore backend

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Message-ID: <5138FAD9.7050504@zytor.com>
Date:	Thu, 07 Mar 2013 12:38:49 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Seth Forshee <seth.forshee@...onical.com>
CC:	Matt Fleming <matt.fleming@...el.com>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org
Subject: Re: [PATCH] efivars: Allow disabling use as a pstore backend

On 03/07/2013 09:40 AM, Seth Forshee wrote:
> We know that with some firmware implementations writing too much data to
> UEFI variables can lead to bricking machines. Recent changes attempt to
> address this issue, but for some it may still be prudent to avoid
> writing large amounts of data until the solution has been proven on a
> wide variety of hardware.
> 
> Crash dumps or other data from pstore can potentially be a large data
> source. Add a new option, CONFIG_EFI_VARS_PSTORE, which can be set to N
> to avoid using efivars as a backend to pstore.

What about a command line option?

> -#ifdef CONFIG_PSTORE
> +#if defined(CONFIG_PSTORE) && defined(CONFIG_EFI_VARS_PSTORE)

Redundant.

	-hpa

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