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| author |   Ard Biesheuvel <ardb@kernel.org> | 2022-06-24 17:06:45 +0200 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2022-06-24 17:18:10 +0100 |
| commit | a004393f45d9a55e55d76f252914bdddffdde204 (patch) | |
| tree | ed02beb9a7def334f64a249636f5c72e2d7443b2 /arch/arm64/kernel/head.S | |
| parent | arm64: head: create a temporary FDT mapping in the initial ID map (diff) | |
| download | linux-dev-a004393f45d9a55e55d76f252914bdddffdde204.tar.xz linux-dev-a004393f45d9a55e55d76f252914bdddffdde204.zip | |
arm64: idreg-override: use early FDT mapping in ID map
Instead of calling into the kernel to map the FDT into the kernel page
tables before even calling start_kernel(), let's switch to the initial,
temporary mapping of the device tree that has been added to the ID map.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-16-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/head.S')
| -rw-r--r-- | arch/arm64/kernel/head.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 8283ff848328..64ebff634b83 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -472,6 +472,7 @@ SYM_FUNC_START_LOCAL(__primary_switched) #endif mov x0, x21 // pass FDT address in x0 bl early_fdt_map // Try mapping the FDT early + mov x0, x22 // pass FDT address in x0 bl init_feature_override // Parse cpu feature overrides #ifdef CONFIG_RANDOMIZE_BASE tst x23, ~(MIN_KIMG_ALIGN - 1) // already running randomized? |