Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel

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To: Tom Lendacky <thomas.lendacky@xxxxxxx>
Subject: Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
From: Borislav Petkov <bp@xxxxxxxxx>
Date: Wed, 2 Aug 2023 15:58:56 +0200
Cc: Tao Liu <ltao@xxxxxxxxxx>, Michael Roth <michael.roth@xxxxxxx>, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, hpa@xxxxxxxxx, ardb@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, bhe@xxxxxxxxxx, dyoung@xxxxxxxxxx, kexec@xxxxxxxxxxxxxxxxxxx, linux-efi@xxxxxxxxxxxxxxx
In-reply-to: <99cb3813-1737-9d10-1f24-77565e460c55@amd.com>
References: <20230601072043.24439-1-ltao@redhat.com> <20230713100459.GEZK/MS69XbphJa+tN@fat_crate.local> <CAO7dBbVMNKTSDi5eP4BseEUexsk0Mo0GWJpyHfOcp+tHs6cSUw@mail.gmail.com> <20230717141409.GGZLVMsU6d/9mpJvMO@fat_crate.local> <CAO7dBbXJv9JzDbSa-DLT03+osYCQXNUXFwz63gbq=NGDxEVyEA@mail.gmail.com> <20230728165535.GDZMPzB/ek5QM+xJqA@fat_crate.local> <CAO7dBbVyuLHH6RfdVQkU5ThXaJ-F4yvFAYD1PDNGkOpph9xvnA@mail.gmail.com> <20230802093927.GAZMokT57anC5jBISK@fat_crate.local> <99cb3813-1737-9d10-1f24-77565e460c55@amd.com>

On Wed, Aug 02, 2023 at 08:40:36AM -0500, Tom Lendacky wrote:
> Short of figuring out how to map page accesses earlier through the
> boot_page_fault IDT routine

And you want to do that because?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

Follow-Ups:
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Ard Biesheuvel

References:
- [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Tao Liu
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Borislav Petkov
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Tao Liu
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Borislav Petkov
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Tao Liu
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Borislav Petkov
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Tao Liu
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Borislav Petkov
- Re: [PATCH v2] x86/kexec: Add EFI config table identity mapping for kexec kernel
  - From: Tom Lendacky

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