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x86/efi: Add additional efi tables for unencrypted mapping checks

Message ID 9b52495a2d8adfc8f2d731a0236c945196143ef4.1582644865.git.thomas.lendacky@amd.com
State New
Headers show
Series x86/efi: Add additional efi tables for unencrypted mapping checks | expand

Commit Message

Tom Lendacky Feb. 25, 2020, 3:34 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 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@amd.com>
---
 arch/x86/platform/efi/efi.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

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 */