diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2024-02-14 13:29:09 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-02-16 13:42:35 +0100 |
| commit | ba5b0333a847ac026725122e085b2fea9e1674bc (patch) | |
| tree | 1f3a5259f4c8ba583406481f36b77d2db522ba52 /arch/arm64/mm/kasan_init.c | |
| parent | arm64: mm: avoid fixmap for early swapper_pg_dir updates (diff) | |
| download | linux-ba5b0333a847ac026725122e085b2fea9e1674bc.tar.xz linux-ba5b0333a847ac026725122e085b2fea9e1674bc.zip | |
arm64: mm: omit redundant remap of kernel image
Now that the early kernel mapping is created with all the right
attributes and segment boundaries, there is no longer a need to recreate
it and switch to it. This also means we no longer have to copy the kasan
shadow or some parts of the fixmap from one set of page tables to the
other.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20240214122845.2033971-68-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/kasan_init.c')
| -rw-r--r-- | arch/arm64/mm/kasan_init.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c index 4c7ad574b946..89828ad2bca7 100644 --- a/arch/arm64/mm/kasan_init.c +++ b/arch/arm64/mm/kasan_init.c @@ -189,21 +189,6 @@ static void __init kasan_map_populate(unsigned long start, unsigned long end, kasan_pgd_populate(start & PAGE_MASK, PAGE_ALIGN(end), node, false); } -/* - * Copy the current shadow region into a new pgdir. - */ -void __init kasan_copy_shadow(pgd_t *pgdir) -{ - pgd_t *pgdp, *pgdp_new, *pgdp_end; - - pgdp = pgd_offset_k(KASAN_SHADOW_START); - pgdp_end = pgd_offset_k(KASAN_SHADOW_END); - pgdp_new = pgd_offset_pgd(pgdir, KASAN_SHADOW_START); - do { - set_pgd(pgdp_new, READ_ONCE(*pgdp)); - } while (pgdp++, pgdp_new++, pgdp != pgdp_end); -} - static void __init clear_pgds(unsigned long start, unsigned long end) { |