arm64: head: allocate more pages for the kernel mapping

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In preparation for switching to an early kernel mapping routine that
maps each segment according to its precise boundaries, and with the
correct attributes, let's allocate some extra pages for page tables for
the 4k page size configuration. This is necessary because the start and
end of each segment may not be aligned to the block size, and so we'll
need an extra page table at each segment boundary.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20240214122845.2033971-59-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Ard Biesheuvel 2024-02-14 13:29:00 +01:00 • committed by Catalin Marinas

parent a669c6a493

commit 8d47b8e5c7

1 changed files with 10 additions and 1 deletions

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arch/arm64/include/asm/kernel-pgtable.h

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