arm64: Use simpler arithmetics for the linear map macros
Because of the tagged addresses, the __is_lm_address() and __lm_to_phys() macros grew to some harder to understand bitwise operations using PAGE_OFFSET. Since these macros only accept untagged addresses, use a simple subtract operation. Signed-off-by:Catalin Marinas <catalin.marinas@arm.com> Acked-by:
Ard Biesheuvel <ardb@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20210201190634.22942-3-catalin.marinas@arm.com
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