arm64: kernel: use x30 for __enable_mmu return address

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Using x27 for passing to __enable_mmu what is essentially the return
address makes the code look more complicated than it needs to be. So
switch to x30/lr, and update the secondary and cpu_resume call sites to
simply call __enable_mmu as an ordinary function, with a bl instruction.
This requires the callers to be covered by .idmap.text.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Ard Biesheuvel 2016-08-31 12:05:14 +01:00 • committed by Will Deacon

parent 3c5e9f238b

commit 9dcf7914ae

2 changed files with 9 additions and 20 deletions

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21

arch/arm64/kernel/head.S

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8

arch/arm64/kernel/sleep.S

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