efi/x86: Add TPM related EFI tables to unencrypted mapping checks
authorTom Lendacky <thomas.lendacky@amd.com>
Fri, 28 Feb 2020 12:14:03 +0000 (13:14 +0100)
committerIngo Molnar <mingo@kernel.org>
Sat, 29 Feb 2020 09:16:56 +0000 (10:16 +0100)
commitf10e80a19b07b58fc2adad7945f8313b01503bae
treea97fdb093fa3c723e8e1560a4f93fc2a38d96359
parente9765680a31b22ca6703936c000ce5cc46192e10
efi/x86: Add TPM related EFI tables to unencrypted mapping checks

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
arch/x86/platform/efi/efi.c