diff options
Diffstat (limited to 'documentation/kernel/memory.txt')
| -rw-r--r-- | documentation/kernel/memory.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/documentation/kernel/memory.txt b/documentation/kernel/memory.txt new file mode 100644 index 0000000..3c0e4f4 --- /dev/null +++ b/documentation/kernel/memory.txt @@ -0,0 +1,15 @@ +only the first 32GiB of physical memory are considered. this can be changed +with pram_pages in paging.cpp. vram layout is as follows: + +0x0000.0000.0000 - 0x0000.0000.0fff: always unmapped +0x0000.0000.1000 - 0x003f.ffff.ffff: available to user process +0x0040.0000.0000 - 0x007f.ffff.ffff: each 16MB: + 0x00.0000 - 0x00.0fff: always unmapped + 0x00.1000 - 0xff.ffff: available for user thread stack +0x0080.0000.0000 - 0xffff.bfff.ffff: always unmapped +0xffff.c000.0000 - 0xffff.ffdf.ffff: available to kernel +0xffff.ffe0.0000 - 0xffff.ffe0.0fff: always unmapped +0xffff.ffe0.1000 - 0xffff.ffef.efff: interrupt stack +0xffff.ffef.f000 - 0xffff.fff0.0fff: always unmapped +0xffff.fff0.1000 - 0xffff.ffff.efff: syscall stack / kernel init stack +0xffff.ffff.f000 - 0xffff.ffff.ffff: always unmapped |