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[v2] x86/efi: Add additional efi tables for unencrypted mapping checks

Message ID 261ea8108c6290e95962be2638bd204f90787c1c.1582652466.git.thomas.lendacky@amd.com
State Superseded
Headers show
Series [v2] x86/efi: Add additional efi tables for unencrypted mapping checks | expand

Commit Message

Tom Lendacky Feb. 25, 2020, 5:41 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>

---
Changes since v1:
- Re-spun against EFI tree
---
 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 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 */