linux-kernel - Re: [RFC][PATCH] pstore: EFI Support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4DCA9CE2.1080307@zytor.com>
Date:	Wed, 11 May 2011 07:27:46 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Américo Wang <xiyou.wangcong@...il.com>
CC:	Greg KH <greg@...ah.com>, Seiji Aguchi <seiji.aguchi@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	"mikew@...gle.com" <mikew@...gle.com>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"tj@...nel.org" <tj@...nel.org>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>
Subject: Re: [RFC][PATCH] pstore: EFI Support

On 05/11/2011 06:09 AM, Américo Wang wrote:
> On Wed, May 11, 2011 at 12:11 AM, Greg KH<greg@...ah.com>  wrote:
>> On Tue, May 10, 2011 at 11:00:44AM -0400, Seiji Aguchi wrote:
>>> Description of boot paremeters is following.
>>>
>>>   - efi_pstore_enable
>>>     enable EFI support of pstore.
>>>
>>>   - efi_pstore_len
>>>     Sets the buffer size of EFI variable space used by pstore.
>>
>> Please don't add new boot parameters if at all possible.  Distros will
>> not know to enable them, and users don't know how to either.
>>
>> Use sane defaults, and provide ways to override them if needed, but
>> don't rely on them for new functionality if at all possible.
>
> I agree. It seems that we should enable this by default when APEI and
> EFI are both enabled, this could be done by Kconfig.
>

No, it can't.  That would be a compile-time option, but the selection 
needs to be at runtime.

However, it is still unclear that this is actually a win at all...

	-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/