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AgeCommit message (Collapse)Author
4 dayskernel: Prevent physmem clobbers + zero memoryIan Moffett
To prevent a situation where there is a data race between one thread freeing physical memory and one allocating physical memory. Do not immediately reuse freed physical memory. Instead, keep allocating upwards and once there is no more room, wrap the last_idx back to the bitmap free index. We now also zero allocated physical memory for security reasons. Signed-off-by: Ian Moffett <ian@osmora.org>
4 dayskernel: physmem: Make globals staticIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
8 dayskernel: physmem: Only set bits if memory is foundIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
9 dayskernel: physmem: Allocate unfragmented phys memoryIan Moffett
- Ensure a contiguous region of physical memory is allocated in vm_alloc_frame() - Fix issues with physical memory being clobbered with excessive allocations - Clean up frame walk loop Signed-off-by: Ian Moffett <ian@osmora.org>
9 dayskernel: physmem: Ensure base is page alignedIan Moffett
- Use ALIGN_UP() on base address in vm_free_frame() Signed-off-by: Ian Moffett <ian@osmora.org>
12 dayskernel: vm: Support NULL `addr' for private mmap()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
12 dayskernel: vm: Map at `va + page_off'Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-03kernel: vm: Allow NULL `addr' for cdev mappingsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-03kernel: device: Harden cdev mmap() bounds checksIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-03kernel: vm: Prepare for user mmap() interfaceIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-02kernel: vm: Add initial shared mapping supportIan Moffett
Add initial shared mapping support allowing device files to be mapped out into memory. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-02kernel: vm: Add initial device pager implIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-28kernel: tlsf: Include proper headersIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-27kernel: vm: Add munmap() implIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-25kernel: vm: Add initial mmap() implIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-25kernel: vm: Fix vm_page insertionsIan Moffett
Ensure vm_page entries are properly kept track of. This commit additionally simplifies and cleans up vm_pageinsert() Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-14kernel: vm: Only hold pgres with timeoutIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-14kernel: vm: Add initial anonymous pager sourceIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-09kernel: vm_map: Remove extra leading whitespaceIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-09kernel: pager: Make vm_vnops externIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-21kernel: Update kernel log styleIan Moffett
Kernel logs must now all be lowercase for consistency. A new style called Peripheral Description Notation (PDN) has also been introduced to describe devices. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-16project: Update copyright date to 2025Ian Moffett
Was supposed to happen on Jan 1, sorry! Happy late new year! Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-15kernel: vm: Add objects, page struct and pagersIan Moffett
This commit expands the virtual memory subsystem by providing the initial implementation of virtual memory objects, pager descriptors and pagers. This change currently implemenents a minimal vnode pager. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-10kernel: vm: Add dynalloc_memalign()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-06-23kernel: vm: Add g_kvas for kernel VASIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-06-10kernel: vm: Add initial code for MI layerIan Moffett
Add initial code for the machine independent virtual memory layer Signed-off-by: Ian Moffett <ian@osmora.org>
2024-06-05kernel: vm: Add port of TLSFIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-06-04kernel: vm: Add physical memory allocatorIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-06-04kernel: Add initial virtual memory codeIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
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