diff options
Diffstat (limited to 'drivers/firmware/efi/memattr.c')
| -rw-r--r-- | drivers/firmware/efi/memattr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/firmware/efi/memattr.c b/drivers/firmware/efi/memattr.c index f178b2984dfb..ab85bf8e165a 100644 --- a/drivers/firmware/efi/memattr.c +++ b/drivers/firmware/efi/memattr.c @@ -129,6 +129,7 @@ int __init efi_memattr_apply_permissions(struct mm_struct *mm, efi_memattr_perm_setter fn) { efi_memory_attributes_table_t *tbl; + bool has_bti = false; int i, ret; if (tbl_size <= sizeof(*tbl)) @@ -150,6 +151,10 @@ int __init efi_memattr_apply_permissions(struct mm_struct *mm, return -ENOMEM; } + if (tbl->version > 1 && + (tbl->flags & EFI_MEMORY_ATTRIBUTES_FLAGS_RT_FORWARD_CONTROL_FLOW_GUARD)) + has_bti = true; + if (efi_enabled(EFI_DBG)) pr_info("Processing EFI Memory Attributes table:\n"); @@ -169,7 +174,7 @@ int __init efi_memattr_apply_permissions(struct mm_struct *mm, efi_md_typeattr_format(buf, sizeof(buf), &md)); if (valid) { - ret = fn(mm, &md); + ret = fn(mm, &md, has_bti); if (ret) pr_err("Error updating mappings, skipping subsequent md's\n"); } |