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Date:   Wed, 9 Feb 2022 16:49:57 +0000
From:   Matthew Garrett <mjg59@srcf.ucam.org>
To:     Aditya Garg <gargaditya08@live.com>
Cc:     Ard Biesheuvel <ardb@kernel.org>, Jeremy Kerr <jk@ozlabs.org>,
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Subject: Re: [PATCH] efi: Do not import certificates from UEFI Secure Boot
 for T2 Macs
Message-ID: <20220209164957.GB12763@srcf.ucam.org>
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On Wed, Feb 09, 2022 at 02:27:51PM +0000, Aditya Garg wrote:
> From: Aditya Garg <gargaditya08@live.com>
> 
> On T2 Macs, the secure boot is handled by the T2 Chip. If enabled, only
> macOS and Windows are allowed to boot on these machines. Thus we need to
> disable secure boot for Linux. If we boot into Linux after disabling
> secure boot, if CONFIG_LOAD_UEFI_KEYS is enabled, EFI Runtime services
> fail to start, with the following logs in dmesg

Which specific variable request is triggering the failure? Do any 
runtime variable accesses work on these machines?