diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/xlat-tables-lib-v2-design.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/docs/xlat-tables-lib-v2-design.rst b/docs/xlat-tables-lib-v2-design.rst index f36ee9bb4..07cbf86c1 100644 --- a/docs/xlat-tables-lib-v2-design.rst +++ b/docs/xlat-tables-lib-v2-design.rst @@ -77,8 +77,11 @@ might create new translation tables, update or split existing ones. The region attributes specify the type of memory (for example device or cached normal memory) as well as the memory access permissions (read-only or -read-write, executable or not, secure or non-secure, and so on). See the -``mmap_attr_t`` enumeration type in `xlat\_tables\_v2.h`_. +read-write, executable or not, secure or non-secure, and so on). In the case of +the EL1&0 translation regime, the attributes also specify whether the region is +a User region (EL0) or Privileged region (EL1). See the ``mmap_attr_t`` +enumeration type in `xlat\_tables\_v2.h`_. Note that for the EL1&0 translation +regime the Execute Never attribute is set simultaneously for both EL1 and EL0. The granularity controls the translation table level to go down to when mapping the region. For example, assuming the MMU has been configured to use a 4KB |