linux-kernel - Re: [PATCH] efi/capsule: Make efi_capsule

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Message-ID: <20160504122042.GB4074@pd.tnic>
Date:	Wed, 4 May 2016 14:20:42 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Matt Fleming <matt@...eblueprint.co.uk>
Cc:	linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Kweh Hock Leong <hock.leong.kweh@...el.com>,
	Bryan O'Donoghue <pure.logic@...us-software.ie>,
	joeyli <jlee@...e.com>
Subject: Re: [PATCH] efi/capsule: Make efi_capsule_pending() lockless

On Wed, May 04, 2016 at 12:46:05PM +0100, Matt Fleming wrote:
> But emergency_restart() is called after bust_spinlocks(0) which can
> reset oops_in_progress, so can't even use that to solve the panic
> case.

Blergh.

So I guess you need an explicit call efi_stop_capsules() somewhere in
the reboot path and be done with it. No reboot notifiers, no bla bla.
Just one big hammer which STFU the EFI.

-- 
Regards/Gruss,
    Boris.

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