| # Changelog |
| |
| ## 0.7.0 |
| |
| ### Breaking changes |
| |
| - `Translation::allocate_table` and `Translation::deallocate_table` now takes `&mut self` rather |
| than `&self. |
| |
| ### Other changes |
| |
| - The `Translation` type parameter to `Mapping` no longer needs to be `Clone`. |
| - `IdMap`, `LinearMap`, `Mapping` and `RootTable` are now `Sync`. |
| |
| ## 0.6.0 |
| |
| ### Breaking changes |
| |
| - Added support for EL2 and EL3 page tables. This requires a new parameter to `IdMap::new`, |
| `LinearMap::new`, `Mapping::new` and `RootTable::new`. |
| - `Attributes::EXECUTE_NEVER` renamed to `Attributes::UXN`. |
| - `Attributes::DEVICE_NGNRE` and `NORMAL` have been removed in favour of `ATTRIBUTE_INDEX_*`, |
| `OUTER_SHAREABLE` and `INNER_SHAREABLE`, to avoid making assumptions about how the MAIR registers |
| are programmed. |
| |
| ### New features |
| |
| - Added `root_address`, `mark_active` and `mark_inactive` methods to `IdMap`, `LinearMap` and |
| `Mapping`. These may be used to activate and deactivate the page table manually rather than |
| calling `activate` and `deactivate`. |
| - Added `NS` and `PXN` bits to `Attributes`. |
| |
| ### Bug fixes |
| |
| - When an invalid descriptor is split into a table, the table descriptors aren't set unless to |
| non-zero values unless the original descriptor was. |
| |
| ### Other changes |
| |
| - `Attributes::ACCESSED` is no longer automatically set on all new mappings. To maintain existing |
| behaviour you should explicitly set `Attributes::ACCESSED` whenever calling `map_range` for a |
| valid mapping. |
| |
| ## 0.5.0 |
| |
| ### Bug fixes |
| |
| - Reject the `PAGE_OR_TABLE` flag when passed to `map_range`, which would result in corrupt table |
| mappings to be created. |
| |
| ### Breaking changes |
| |
| - Updated `modify_range` to split block entries before traversing them, and pass only the |
| descriptors and subregions that are completely covered by the given region to the updater callback |
| function. |
| - Updated `modify_range` to only pass block or page descriptors to the callback function and prevent |
| them from being converted into table descriptors inadvertently. |
| - Added rigid break-before-make (BBM) checks to `map_range` and `modify_range`. |
| - Marked `activate` and `deactivate` methods as unsafe. |
| |
| ### New features |
| |
| - Added new `map_range()` alternative `map_range_with_constraints()` with extra `contraints` |
| argument. |
| - Added `walk_range` method that iterates over all block or page descriptorsthat intersect with a |
| given region, without permitting the callback to make changes to the descriptors |
| |
| ## 0.4.1 |
| |
| ### Bug fixes |
| |
| - `RootTable`, `Mapping`, `IdMap` and `LinearMap` are now correctly marked as `Send`, as it doesn't |
| matter where they are used from. |
| |
| ## 0.4.0 |
| |
| ### Breaking changes |
| |
| - Updated `bitflags` to 2.0.2, which changes the API of `Attributes` a bit. |
| - Updated `map_range` method to support mapping leaf page table entries without the `VALID` flag. |
| `Attributes::VALID` is no longer implicitly set when mapping leaf page table entries. |
| |
| ### New features |
| |
| - Added `modify_range` method to `IdMap`, `LinearMap` and `Mapping` to update details of a mapped |
| range. This can be used e.g. to change flags for some range which is already mapped. As part of |
| this, the `Descriptor` struct was added to the public API. |
| - Added `DBM` and software flags to `Attributes`. |
| |
| ## 0.3.0 |
| |
| ### Breaking changes |
| |
| - Made `Translation` trait responsible for allocating page tables. This should help make it possible |
| to use more complex mapping schemes, and to construct page tables in a different context to where |
| they are used. |
| - Renamed `AddressRangeError` to `MapError`, which is now an enum with three variants and implements |
| `Display`. |
| - `From<*const T>` and `From<*mut T>` are no longer implemented for `VirtualAddress`. |
| - Added support for using TTBR1 as well as TTBR0; this changes various constructors to take an extra |
| parameter. |
| |
| ### New features |
| |
| - Made `alloc` dependency optional via a feature flag. |
| - Added support for linear mappings with new `LinearMap`. |
| - Implemented subtraction of usize from address types. |
| |
| ### Bugfixes |
| |
| - Fixed memory leak introduced in 0.2.0: dropping a page table will now actually free its memory. |
| |
| ## 0.2.1 |
| |
| ### New features |
| |
| - Implemented `Debug` and `Display` for `MemoryRegion`. |
| - Implemented `From<Range<VirtualAddress>>` for `MemoryRegion`. |
| - Implemented arithmetic operations for `PhysicalAddress` and `VirtualAddress`. |
| |
| ## 0.2.0 |
| |
| ### Breaking changes |
| |
| - Added bounds check to `IdMap::map_range`; it will now return an error if you attempt to map a |
| virtual address outside the range of the page table given its configured root level. |
| |
| ### New features |
| |
| - Implemented `Debug` for `PhysicalAddress` and `VirtualAddress`. |
| - Validate that chosen root level is supported. |
| |
| ### Bugfixes |
| |
| - Fixed bug in `Display` and `Drop` implementation for `RootTable` that would result in a crash for |
| any pagetable with non-zero mappings. |
| - Fixed `Display` implementation for `PhysicalAddress` and `VirtualAddress` to use correct number of |
| digits. |
| |
| ## 0.1.0 |
| |
| Initial release. |
