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General improvements and cleanup to page tables handling #309

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merged 11 commits into from
Oct 27, 2023
Merged

General improvements and cleanup to page tables handling #309

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1644643
arch,pmm: Explicitly map PMM frame arrays
wipawel Oct 22, 2023
b687f75
arch,pt: map all levels of PT for temporary mapping location
wipawel Oct 23, 2023
10f589d
arch,pt: map multiboot areas already during pagetables init
wipawel Oct 23, 2023
970b963
setup: map BIOS areas after switching to virtual mode
wipawel Oct 23, 2023
c2a6ad4
arch,pt: switch page tables already in init_pagetables()
wipawel Oct 23, 2023
8a46eb2
arch,pt: do not map all used memory
wipawel Oct 23, 2023
91a4d75
arch,pt: refactor init_map_mfn()
wipawel Oct 23, 2023
dbb6f42
arch,pt: minor refactoring of get_pgentry_mfn()
wipawel Oct 25, 2023
a48d24f
arch,pt: optimize temporary mapping handling
wipawel Oct 23, 2023
7d6e25f
lib: add invlpg() helper function
wipawel Oct 23, 2023
9f7ae9c
arch,pt: do not flush entire TLB upon PT change
wipawel Oct 25, 2023
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5 changes: 3 additions & 2 deletions common/setup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -223,15 +223,16 @@ void __noreturn __text_init kernel_start(uint32_t multiboot_magic, unsigned long
/* Setup final pagetables */
init_pagetables();

map_bios_area();

write_cr3(cr3.paddr);
boot_flags.virt = true;

WRITE_SP(get_free_pages_top(PAGE_ORDER_2M, GFP_KERNEL_MAP));

if (opt_debug)
dump_pagetables(cr3);

map_bios_area();

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if (setup_framebuffer())
display_banner();
else
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