diff options
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/head.S | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 0b281fffda51..5627d9e69b3c 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -340,8 +340,13 @@ ENDPROC(__enable_mmu) * x27 = *virtual* address to jump to upon completion * * other registers depend on the function called upon completion + * + * We align the entire function to the smallest power of two larger than it to + * ensure it fits within a single block map entry. Otherwise were PHYS_OFFSET + * close to the end of a 512MB or 1GB block we might require an additional + * table to map the entire function. */ - .align 6 + .align 4 __turn_mmu_on: msr sctlr_el1, x0 isb |