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| author | Ard Biesheuvel <ardb@kernel.org> | 2024-02-14 13:29:04 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-02-16 12:42:33 +0000 |
| commit | 97a6f43bb049e64b9913c50c7530e13d78e205d4 (patch) | |
| tree | f27badee5d092ecc09f221e6ce6dd19b83e9b44c /arch/arm64/mm/proc.S | |
| parent | 82ca151da7d54d7571c5d511d016b7780d5d559f (diff) | |
| download | linux-stable-97a6f43bb049e64b9913c50c7530e13d78e205d4.tar.gz linux-stable-97a6f43bb049e64b9913c50c7530e13d78e205d4.tar.bz2 linux-stable-97a6f43bb049e64b9913c50c7530e13d78e205d4.zip | |
arm64: head: Move early kernel mapping routines into C code
The asm version of the kernel mapping code works fine for creating a
coarse grained identity map, but for mapping the kernel down to its
exact boundaries with the right attributes, it is not suitable. This is
why we create a preliminary RWX kernel mapping first, and then rebuild
it from scratch later on.
So let's reimplement this in C, in a way that will make it unnecessary
to create the kernel page tables yet another time in paging_init().
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20240214122845.2033971-63-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index f66c37a1610e..7c1bdaf25408 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -195,6 +195,7 @@ SYM_TYPED_FUNC_START(idmap_cpu_replace_ttbr1) ret SYM_FUNC_END(idmap_cpu_replace_ttbr1) +SYM_FUNC_ALIAS(__pi_idmap_cpu_replace_ttbr1, idmap_cpu_replace_ttbr1) .popsection #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 |