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Date: Wed, 2 Feb 2022 09:41:04 +0100
From: Gerd Hoffmann <kraxel@...hat.com>
To: Dov Murik <dovmurik@...ux.ibm.com>
Cc: linux-efi@...r.kernel.org, Borislav Petkov <bp@...e.de>,
Ashish Kalra <ashish.kalra@....com>,
Brijesh Singh <brijesh.singh@....com>,
Tom Lendacky <thomas.lendacky@....com>,
Ard Biesheuvel <ardb@...nel.org>,
James Morris <jmorris@...ei.org>,
"Serge E. Hallyn" <serge@...lyn.com>,
Andi Kleen <ak@...ux.intel.com>,
Greg KH <gregkh@...uxfoundation.org>,
Andrew Scull <ascull@...gle.com>,
Dave Hansen <dave.hansen@...el.com>,
"Dr. David Alan Gilbert" <dgilbert@...hat.com>,
Lenny Szubowicz <lszubowi@...hat.com>,
Peter Gonda <pgonda@...gle.com>,
James Bottomley <jejb@...ux.ibm.com>,
Tobin Feldman-Fitzthum <tobin@...ux.ibm.com>,
Jim Cadden <jcadden@....com>,
Daniele Buono <dbuono@...ux.vnet.ibm.com>,
linux-coco@...ts.linux.dev, linux-security-module@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 2/5] efi/libstub: Reserve confidential computing
secret area
On Tue, Feb 01, 2022 at 12:44:10PM +0000, Dov Murik wrote:
> Some older firmware declare the confidential computing secret area as
> EFI_BOOT_SERVICES_DATA region. Fix this up by treating this memory
> region as EFI_RESERVED_TYPE, as it should be.
>
> If that memory region is already EFI_RESERVED_TYPE then this has no
> effect on the E820 map.
Hmm, sure we actually want merge this? I suspect by the time this
landed in an upstream kernel "older firmware" isn't much of a problem
any more.
take care,
Gerd
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