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[v3,1/2] x86/efi: Add TPM related EFI tables to unencrypted mapping checks

Message ID 4144cd813f113c20cdfa511cf59500a64e6015be.1582662842.git.thomas.lendacky@amd.com (mailing list archive)
State Deferred, archived
Headers show
Series SME EFI table updates/fixes | expand

Commit Message

Tom Lendacky Feb. 25, 2020, 8:34 p.m. UTC 
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.

Cc: <stable@vger.kernel.org> # 5.4.x-
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
 arch/x86/platform/efi/efi.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 43b24e149312..0a8117865430 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -88,6 +88,8 @@  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 */