diff options
| author | Tianhao Wang <shrik3@mailbox.org> | 2024-05-29 19:53:52 +0200 |
|---|---|---|
| committer | Tianhao Wang <shrik3@mailbox.org> | 2024-06-11 15:17:11 +0200 |
| commit | cd658673a35df8b0da3551e819e26d35c18b89f2 (patch) | |
| tree | 74c209b519290eb43545e800b88ddf9dfa796a7a /defs/x86_64-linker.ld | |
| parent | 9cf85e88211512b0410f9bb9f2f19ea4ce9a8190 (diff) | |
mm: add stack based PMA
use 8MiB reserved array to manage up to 4GiB of physical memory
(4K Pages only)
Signed-off-by: Tianhao Wang <shrik3@mailbox.org>
Diffstat (limited to 'defs/x86_64-linker.ld')
| -rw-r--r-- | defs/x86_64-linker.ld | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/defs/x86_64-linker.ld b/defs/x86_64-linker.ld index 39d8876..ac4a86c 100644 --- a/defs/x86_64-linker.ld +++ b/defs/x86_64-linker.ld @@ -84,5 +84,16 @@ SECTIONS } . = ALIGN(4096); + /* reserve space for a premitive stack based physical frame allocator */ + /* each frame is 4KiB in size and has a 64bit (physical) address. e.g. */ + /* for every 1 GiB physical memory we need 2 MiB space reserved for the */ + /* free stack. For a easier bootstraping we are using a fix-sized stack */ + /* array. Currently using 4GiB, therefore reserve 8MiB. */ + PROVIDE (___FREE_PAGE_STACK__ = .); + .global_free_page_stack ALIGN(4096) (NOLOAD) : + { + *("..global_free_page_stack") + } + . = ALIGN(4096); PROVIDE (___KERNEL_END__ = .); } |