Re: [PATCH] x86/efi: Add additional efi tables for unencrypted mapping checks

[Ard Biesheuvel]

On Tue, 25 Feb 2020 at 16:34, Tom Lendacky <thomas.lendacky@xxxxxxx> wrote:
>
> When booting with SME active, EFI tables must be mapped unencrypted since
> they were built by UEFI in unencrypted memory. Update the list of tables
> to be checked during early_memremap() processing to account for new EFI
> tables.
>
> This fixes a bug where an EFI TPM log table has been created by UEFI, but
> it lives in memory that has been marked as usable rather than reserved.
>
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>

Thanks Tom

Mind respinning this on top of efi/next?

https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git/

Thanks,


> ---
>  arch/x86/platform/efi/efi.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
> index ae923ee8e2b4..eba5038c7a44 100644
> --- a/arch/x86/platform/efi/efi.c
> +++ b/arch/x86/platform/efi/efi.c
> @@ -85,6 +85,9 @@ static const unsigned long * const efi_tables[] = {
>  #ifdef CONFIG_EFI_RCI2_TABLE
>         &rci2_table_phys,
>  #endif
> +       &efi.rng_seed,
> +       &efi.tpm_log,
> +       &efi.tpm_final_log,
>  };
>
>  u64 efi_setup;         /* efi setup_data physical address */
> --
> 2.17.1
>