From: Matt Fleming <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
To: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
Cc: linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andi Kleen <ak-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Tony Luck <tony.luck-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Seiji Aguchi <seiji.aguchi-7rDLJAbr9SE@public.gmane.org>,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
Matt Fleming
<matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 5/5] efi: Capsule update support and pstore backend
Date: Thu, 17 Oct 2013 12:55:14 +0100 [thread overview]
Message-ID: <20131017115514.GE10834@console-pimps.org> (raw)
In-Reply-To: <20131016141939.GA28684-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
On Wed, 16 Oct, at 03:19:39PM, Matthew Garrett wrote:
> On Wed, Oct 16, 2013 at 02:51:00PM +0100, Matt Fleming wrote:
>
> > + Many EFI machines have buggy implementations of the UpdateCapsule()
> > + runtime service. This option will enable code that may not function
> > + correctly with your firmware.
>
> Where by "May not function correctly" you mean "May crash the system"?
Bingo.
> I'm a little uneasy having this run by default if enabled, even if it's
> disabled by default in the config.
What would be the canonical way to enable this feature then? Have a file
along the lines of /sys/kernel/debug/capsule_enable, where a user would
be required to,
echo 1 > /sys/kernel/debug/capsule_enable
to turn on the functionality?
--
Matt Fleming, Intel Open Source Technology Center
next prev parent reply other threads:[~2013-10-17 11:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-16 13:50 [PATCH 0/5] EFI capsule pstore support Matt Fleming
[not found] ` <1381931460-6999-1-git-send-email-matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-16 13:50 ` [PATCH 1/5] pstore/ftrace: Don't increment initial data offset Matt Fleming
2013-10-16 13:50 ` [PATCH 2/5] efi: Introduce a Runtime Services lock Matt Fleming
[not found] ` <1381931460-6999-3-git-send-email-matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-16 23:36 ` Seiji Aguchi
2013-10-16 13:50 ` [PATCH 3/5] efi: Add common efi_reboot() implementation Matt Fleming
2013-10-16 13:50 ` [PATCH 4/5] efi: Move efi_status_to_err() to efi.h Matt Fleming
2013-10-16 13:51 ` [PATCH 5/5] efi: Capsule update support and pstore backend Matt Fleming
[not found] ` <1381931460-6999-6-git-send-email-matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-16 14:19 ` Matthew Garrett
[not found] ` <20131016141939.GA28684-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-10-16 14:52 ` Luck, Tony
[not found] ` <3908561D78D1C84285E8C5FCA982C28F31D31122-P5GAC/sN6hlZtRGVdHMbwrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-10-17 0:06 ` Seiji Aguchi
[not found] ` <A5ED84D3BB3A384992CBB9C77DEDA4D443EF862E-ohthHghroY0jroPwUH3sq+6wyyQG6/Uh@public.gmane.org>
2013-10-17 23:18 ` Andi Kleen
2013-10-17 12:05 ` Matt Fleming
2013-10-17 11:55 ` Matt Fleming [this message]
[not found] ` <20131017115514.GE10834-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-17 23:19 ` Andi Kleen
2013-10-16 20:14 ` Andi Kleen
2013-10-17 12:14 ` Matt Fleming
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