[PATCH v2] x86/efi: Add additional efi tables for unencrypted mapping checks
From: Tom Lendacky <thomas.lendacky@amd.com>
Date: 2020-02-25 17:41:25
Also in:
lkml, platform-driver-x86
Subsystem:
extensible firmware interface (efi), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Ard Biesheuvel, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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> --- Changes since v1: - Re-spun against EFI tree --- arch/x86/platform/efi/efi.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 43b24e149312..c6ca959e2366 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c@@ -88,6 +88,9 @@ 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 */
--
2.17.1