]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 Apr 2020 14:12:02 +0000 (16:12 +0200)
commit4a1324cb1e95d7386423cc70d726813f166e254b
tree3eb12c6d6f70de448928c3b3a2b5fd0f1258d3f4
parent941c00362405092587391f2c84fbfce29fbb843a
efi/x86: Add TPM related EFI tables to unencrypted mapping checks

commit f10e80a19b07b58fc2adad7945f8313b01503bae 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>
arch/x86/platform/efi/efi.c