Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime

From	Andy Lutomirski <luto@amacapital.net>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime
Date	2015-09-27 18:40 +0200
Message-ID	<qdn9w-4ba-9@gated-at.bofh.it> (permalink)
References	(5 earlier) <qd2eK-7JC-25@gated-at.bofh.it> <qd3Nw-1lI-21@gated-at.bofh.it> <qd3Nw-1lI-27@gated-at.bofh.it> <qd3Xb-1Ms-3@gated-at.bofh.it> <qd4gx-28W-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Sep 26, 2015 1:19 PM, "H. Peter Anvin" <hpa@zytor.com> wrote:
>
> Sadly a lot of firmware is known to fail in that configuration :(  That was very much our guest choice.
>

Why can't we map everything completely 1:1 (VA = PA) and call the
setVA thing but pass it literally the identity.

Firmwares that need it to be called will work, and firmwares that fail
to update all offsets will be fine because there's nothing to update.

--Andy
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Thread

[PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-26 00:10 +0200
  Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-26 08:00 +0200
    Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-26 08:50 +0200
    Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-26 15:50 +0200
      Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-27 09:10 +0200
        Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-28 08:50 +0200
          Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-28 10:30 +0200
            Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-28 12:00 +0200
              Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-29 11:20 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-29 12:50 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-29 16:20 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-29 16:00 +0200
    Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Andy Lutomirski <luto@amacapital.net> - 2015-09-26 19:10 +0200
      Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime "H. Peter Anvin" <hpa@zytor.com> - 2015-09-26 19:30 +0200
        Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-26 20:20 +0200
          Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-26 22:00 +0200
            Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-26 22:10 +0200
              Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime "H. Peter Anvin" <hpa@zytor.com> - 2015-09-26 22:30 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Andy Lutomirski <luto@amacapital.net> - 2015-09-27 18:40 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matthew Garrett <mjg59@srcf.ucam.org> - 2015-09-27 20:40 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-28 08:20 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matthew Garrett <mjg59@srcf.ucam.org> - 2015-09-28 09:10 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Laszlo Ersek <lersek@redhat.com> - 2015-09-30 00:00 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-09-30 11:40 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Andy Lutomirski <luto@amacapital.net> - 2015-09-30 18:50 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime James Bottomley <jbottomley@odin.com> - 2015-09-30 19:30 +0200
                Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime "H. Peter Anvin" <hpa@zytor.com> - 2015-09-30 03:00 +0200
          Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime "H. Peter Anvin" <hpa@zytor.com> - 2015-09-26 22:00 +0200
        Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Matt Fleming <matt@codeblueprint.co.uk> - 2015-09-26 22:00 +0200
      Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime Ingo Molnar <mingo@kernel.org> - 2015-09-27 09:00 +0200
  [tip:core/urgent] x86/efi:   Fix boot crash by mapping EFI memmap entries bottom-up at runtime,   instead of top-down tip-bot for Matt Fleming <tipbot@zytor.com> - 2015-10-01 15:00 +0200
    Re: [tip:core/urgent] x86/efi: Fix boot crash by mapping EFI memmap  entries bottom-up at runtime, instead of top-down Matt Fleming <matt@codeblueprint.co.uk> - 2015-10-02 11:50 +0200

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