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From:   Dionna Amalie Glaze <dionnaglaze@google.com>
Date:   Mon, 18 Jul 2022 17:31:44 -0700
Message-ID: <CAAH4kHaHJo4NUb72tHeica4a34hq5u_QP6d6Vuzngf6EqTJ8Aw@mail.gmail.com>
Subject: Re: [PATCHv7 00/14] mm, x86/cc: Implement support for unaccepted memory
To:     "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc:     Ard Biesheuvel <ardb@kernel.org>, Peter Gonda <pgonda@google.com>,
        Borislav Petkov <bp@alien8.de>,
        Andy Lutomirski <luto@kernel.org>,
        Sean Christopherson <seanjc@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Joerg Roedel <jroedel@suse.de>,
        Andi Kleen <ak@linux.intel.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        David Rientjes <rientjes@google.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Ingo Molnar <mingo@redhat.com>,
        Varad Gautam <varad.gautam@suse.com>,
        Dario Faggioli <dfaggioli@suse.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Mike Rapoport <rppt@kernel.org>,
        David Hildenbrand <david@redhat.com>,
        Marcelo Cerri <marcelo.cerri@canonical.com>,
        tim.gardner@canonical.com,
        Khalid ElMously <khalid.elmously@canonical.com>,
        philip.cox@canonical.com,
        "the arch/x86 maintainers" <x86@kernel.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
        linux-coco@lists.linux.dev, linux-efi <linux-efi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "Yao, Jiewen" <jiewen.yao@intel.com>
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> > I think we should make it obvious from a kernel image if it supports
> > unaccepted memory (with UTS_VERSION or other way).
> >

Something I didn't address in my previous email: how would the UEFI
know where the kernel is to parse this UTS_VERSION out when it's
booting a bootloader before Linux gets booted?

-- 
-Dionna Glaze, PhD (she/her)