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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-02-28 13:14:04 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-02-29 10:16:56 +0100 |
| commit | badc61982adb6018a48ed8fe32087b9754cae14b (patch) | |
| tree | 2168d6f165beb5fa8156fc9cfc9f62c8f8766ffe /include/linux/efi.h | |
| parent | f10e80a19b07b58fc2adad7945f8313b01503bae (diff) | |
| download | lwn-badc61982adb6018a48ed8fe32087b9754cae14b.tar.gz lwn-badc61982adb6018a48ed8fe32087b9754cae14b.zip | |
efi/x86: Add RNG seed EFI table to unencrypted mapping check
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
RNG seed table.
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>
Link: https://lore.kernel.org/r/b64385fc13e5d7ad4b459216524f138e7879234f.1582662842.git.thomas.lendacky@amd.com
Link: https://lore.kernel.org/r/20200228121408.9075-3-ardb@kernel.org
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 2ab33d5d6ca5..e8a08a499131 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -526,6 +526,8 @@ typedef struct { efi_time_t time_of_revocation; } efi_cert_x509_sha256_t; +extern unsigned long __ro_after_init efi_rng_seed; /* RNG Seed table */ + /* * All runtime access to EFI goes through this structure: */ |