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Kernel: Use ksyms in-place instead of duplicating them into eternal heap

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We can leave the .ksyms section mapped-but-read-only and then have the
symbols index simply point into it.

Note that we manually insert null-terminators into the symbols section
while parsing it.

This gets rid of ~950 KiB of kmalloc_eternal() at startup. :^)
This commit is contained in:
Andreas Kling 2021-12-17 09:52:06 +01:00
parent abf2204402
commit 1f2d0d0ad4
4 changed files with 11 additions and 13 deletions
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2
Kernel/Memory/MemoryManager.h
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@ -160,7 +160,7 @@ public:
void protect_readonly_after_init_memory();
void unmap_text_after_init();
void unmap_ksyms_after_init();
void protect_ksyms_after_init();
static void enter_process_address_space(Process&);
static void enter_address_space(AddressSpace&);