arm64: mm: Modify calculation of VMEMMAP_SIZE

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In a later patch we will need to have a slightly larger VMEMMAP region
to accommodate boot time selection between 48/52-bit kernel VAs.

This patch modifies the formula for computing VMEMMAP_SIZE to depend
explicitly on the PAGE_OFFSET and start of kernel addressable memory.
(This allows for a slightly larger direct linear map in future).

Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Steve Capper 2019-08-07 16:55:21 +01:00 • committed by Will Deacon

parent c8b6d2ccf9

commit ce3aaed873

1 changed files with 8 additions and 1 deletions

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arch/arm64/include/asm/memory.h

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