efi: Clean up config_parse_tables()

config_parse_tables() is a jumble of pointer arithmetic, due to the
fact that on x86, we may be dealing with firmware whose native word
size differs from the kernel's.

This is not a concern on other architectures, and doesn't quite
justify the state of the code, so let's clean it up by adding a
non-x86 code path, constifying statically allocated tables and
replacing preprocessor conditionals with IS_ENABLED() checks.

Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel 2020-01-22 14:40:57 +01:00
parent 3a0701dc7f
commit 06c0bd9343
5 changed files with 31 additions and 33 deletions

View file

@ -613,8 +613,9 @@ extern void __init efi_esrt_init(void);
#else
static inline void efi_esrt_init(void) { }
#endif
extern int efi_config_parse_tables(void *config_tables, int count, int sz,
efi_config_table_type_t *arch_tables);
extern int efi_config_parse_tables(const efi_config_table_t *config_tables,
int count,
const efi_config_table_type_t *arch_tables);
extern int efi_systab_check_header(const efi_table_hdr_t *systab_hdr,
int min_major_version);
extern void efi_systab_report_header(const efi_table_hdr_t *systab_hdr,