diff options
Diffstat (limited to 'drivers/acpi/tables.c')
| -rw-r--r-- | drivers/acpi/tables.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index de974322a197..b7c29a11c0c1 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -20,6 +20,7 @@ #include <linux/memblock.h> #include <linux/earlycpio.h> #include <linux/initrd.h> +#include <linux/security.h> #include "internal.h" #ifdef CONFIG_ACPI_CUSTOM_DSDT @@ -577,6 +578,11 @@ void __init acpi_table_upgrade(void) if (table_nr == 0) return; + if (security_locked_down(LOCKDOWN_ACPI_TABLES)) { + pr_notice("kernel is locked down, ignoring table override\n"); + return; + } + acpi_tables_addr = memblock_find_in_range(0, ACPI_TABLE_UPGRADE_MAX_PHYS, all_tables_size, PAGE_SIZE); |