linux-kernel - Re: [PATCH] efi: Do not import certificates from UEFI Secure Boot for T2 Macs

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Message-ID: <272196DB-04A8-49E2-8BFA-545F989C0A5C@live.com>
Date:   Mon, 14 Feb 2022 00:33:17 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Matthew Garrett <mjg59@...f.ucam.org>
CC:     Ard Biesheuvel <ardb@...nel.org>, Jeremy Kerr <jk@...abs.org>,
        "joeyli.kernel@...il.com" <joeyli.kernel@...il.com>,
        "zohar@...ux.ibm.com" <zohar@...ux.ibm.com>,
        "jmorris@...ei.org" <jmorris@...ei.org>,
        "eric.snowberg@...cle.com" <eric.snowberg@...cle.com>,
        "dhowells@...hat.com" <dhowells@...hat.com>,
        "jlee@...e.com" <jlee@...e.com>,
        "James.Bottomley@...senpartnership.com" 
        <James.Bottomley@...senPartnership.com>,
        "jarkko@...nel.org" <jarkko@...nel.org>,
        "mic@...ikod.net" <mic@...ikod.net>,
        "dmitry.kasatkin@...il.com" <dmitry.kasatkin@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "keyrings@...r.kernel.org" <keyrings@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        Orlando Chamberlain <redecorating@...tonmail.com>,
        Aun-Ali Zaidi <admin@...eit.net>
Subject: Re: [PATCH] efi: Do not import certificates from UEFI Secure Boot for
 T2 Macs


> 
> Interesting. Ok, so there's something else going on here. I'll have 
> access to a T2 system next week, so I'll take a look then. Is this 
> something that started happening recently, or has it always happened if 
> this config option is set on these platforms?

Before https://github.com/torvalds/linux/commit/f5390cd0b43c2e54c7cf5506c7da4a37c5cef746, we had to add efi=noruntime to get Linux working on these machines. Now, its this config option only which is the issue.

You may want to follow https://wiki.t2linux.org/ to test on a T2 Mac, since many T2 patches haven't been upstreamed yet.