This commit introduces a page poison debugging mechanism and additional
assertions for memory management, improving system maintainability and
debugging capabilities. The changes aim to detect illegal memory usage
early and provide better clarity in managing page allocations.
Changes:
- Added `RT_DEBUGGING_PAGE_POISON` option to enable memory usage tracing.
- Introduced a page poisoner for detecting illegal memory usage.
- Implemented region-based memory tracking using bitmaps.
- Enhanced spinlock protection for memory management operations.
- Fixed several assertion checks for memory safety.
- Renamed macros for consistency (`FLOOR` to `CEIL`).
- Refined memory allocation and deallocation logic to include poisoning.
- Updated Kconfig to add configurable `RT_PAGE_MAX_ORDER` and poison debugging.
- Improved debugging outputs for page regions and memory operations.
Signed-off-by: Shell <smokewood@qq.com>
This patch refactors the `rt_page_install` function by delegating specific
operations to new helper functions. Besides, the contiguous page regions
are now separated to segments of fixed size. The goal is to improve the
overall code readability, enhance modularity, and ensure better handling
of page installation logic through clearer separation of concerns.
Changes:
- Introduced `_get_mpr_ready_n_install` to encapsulate memory preparation
and page installation logic.
- Added `_update_region_list` for updating the installed page registry.
- Defined `_PAGE_STRIPE` for optimized region processing.
- Modified `rt_page_install` to handle regions in smaller chunks using
helper functions for better maintainability.
- Improved locking mechanisms with `rt_spin_lock` for thread safety.
- Reduced code duplication and clarified shadow region calculations.
Signed-off-by: Shell <smokewood@qq.com>
This patch introduces a tagged pages allocator to address the existing problems
of page aliasing on specific platforms and the requirement of page coloring.
It implements an affinity-id aware page manager by separating the runtime page
list into two types: a normal single linked-list and a multi-dimensional affinity-list.
Changes:
- Introduced tagged pages allocator and managing algorithm for affinity pages list
- Modified components to support affinity-id list management
- Updated page allocation and freeing functions to handle tagged pages
- Added configuration options for page affinity block size and debugging
- Modified mmap and elf loading to respect affinity settings
- Enhanced page list management to support multi-dimensional affinity-list
Signed-off-by: Shell <smokewood@qq.com>
feat: [libcpu/c906] support ARCH_REMAP_KERNEL
This change was necessary to enable the remapping of the kernel image to
a high virtual address region on the c906 platform.
Changes:
- Introduced new configuration options `ARCH_REMAP_KERNEL`, and
`ARCH_USING_ASID` under the `ARCH_RISCV64` section.
- Updated MMU initialization and switching functions to incorporate
remapping handling.
- Modified page table setup for proper memory attribute settings.
- Added support for early memory setup, kernel remapping
- Added conditional compilation for ASID support in the `rt_aspace` struct,
since this is not enable currently for most architecture.
Signed-off-by: Shell <smokewood@qq.com>
There is no next-level directory under the components/mm/
directory. Do not need to enter the next-level directory
to process the SConscript file.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
* [ofw] dealing with mem region out of kernel space
- Fix parameter checking in _out_of_range() that NULL is excluded for
fixed mapping
- Split page install with a deferred stage to avoid mapping over
ARCH_EARLY_MAP_SIZE
Signed-off-by: Shell <smokewood@qq.com>
* fixup: restrict vstart for using of RT_NULL
---------
Signed-off-by: Shell <smokewood@qq.com>
* [utest/mm] add testcase for create/init
format codes of create/init in components/mm
* [libcpu/aarch64] fix user stack check routine
* [kservice] export API for utest
* [utest/mm] testcase for aspace_map
format & modify the files under components/mm related with aspace_map
* [lwp/user_mm] add user_map_varea for mmap feature
* [mm] rename rt_mm_fault_try_fix to rt_aspace_fault_try_fix
* [utest/mm] testcase for synchronization
* [mm] modify unmap api to improve throughput
* [utest/mm] testcases for cache and varea map
* [format] remove extra space
* [utest/mm] fix testcase problem in header
* [lwp] extend map_user_varea with a flag
* [utest/mm] testcase for lwp_map_user_varea
* [libcpu/arm/cortex-a] fix kernel space layout
* [utest/mm] adjust for armv7 arch
* [mm] mmu operations should be wrapped by _aspace_bst_insert & _aspace_bst_remove to avoid competition on page table
* [lwp] may not return null on failed
* [libcpu/risc-v] support noncached normal memory
* [mm] check before dereference in _fetch_page
* [mm] add comments on ioremap
* [ioremap] report more info on failed
* [rt-smart/mem] remove pv_offset
* [rt-smart] list kernel space command
* [rt-smart] restore ioremap region
* [revert] restore kernel space isolation
* [rt-smart/pv_off] code format
* [rt-smart] add get_pvoff()
* [pvoffset] pvoff as constant for C codes
* [pvoff] pvoff as interfaces
* [rv64/bsp] porting to mm
* [mm] report more info for debugging
* [fix] code format
* [libcpu/c906] porting to RTOS
* [fix] using rtdbg api
* [fix] add return
* [fix] report more information for debugging
* [fix] use assert 0 for unrecoverable error
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