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efi/x86: Add TPM related EFI tables to unencrypted mapping checks 

commit f10e80a19b upstream.

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 the EFI
TPM 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@amd.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: linux-efi@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: <stable@vger.kernel.org> # v5.4+
Link: https://lore.kernel.org/r/4144cd813f113c20cdfa511cf59500a64e6015be.1582662842.git.thomas.lendacky@amd.com
Link: https://lore.kernel.org/r/20200228121408.9075-2-ardb@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Tom Lendacky 2020-02-28 13:14:03 +01:00 committed by Greg Kroah-Hartman
parent 91bed1f1fb
commit c755ca32c8
1 changed files with 2 additions and 0 deletions
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arch/x86/platform/efi/efi.c
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@ -85,6 +85,8 @@ static const unsigned long * const efi_tables[] = {
#ifdef CONFIG_EFI_RCI2_TABLE
&rci2_table_phys,
#endif
&efi.tpm_log,
&efi.tpm_final_log,
};
u64 efi_setup; /* efi setup_data physical address */