diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-06-06 17:26:33 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-06-06 17:22:20 +0200 |
| commit | 2053bc57f36763febced0b5cd91821698bcf6b3d (patch) | |
| tree | 731f4d2730f6284343c1fd63f73bdac65ff0558f /include/linux/efi.h | |
| parent | 3fd1239a783522e7158a1f141fabc7b3b5dc84c6 (diff) | |
efi: Add unaccepted memory support
efi_config_parse_tables() reserves memory that holds unaccepted memory
configuration table so it won't be reused by page allocator.
Core-mm requires few helpers to support unaccepted memory:
- accept_memory() checks the range of addresses against the bitmap and
accept memory if needed.
- range_contains_unaccepted_memory() checks if anything within the
range requires acceptance.
Architectural code has to provide efi_get_unaccepted_table() that
returns pointer to the unaccepted memory configuration table.
arch_accept_memory() handles arch-specific part of memory acceptance.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20230606142637.5171-6-kirill.shutemov@linux.intel.com
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 8ffe451a6a2f..67cb72d7a764 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -646,6 +646,7 @@ extern struct efi { unsigned long tpm_final_log; /* TPM2 Final Events Log table */ unsigned long mokvar_table; /* MOK variable config table */ unsigned long coco_secret; /* Confidential computing secret table */ + unsigned long unaccepted; /* Unaccepted memory table */ efi_get_time_t *get_time; efi_set_time_t *set_time; |