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Currently, the maximum supported physical address space can be configured as either 48 bits or 52 bits. The only remaining difference between these in practice is that the former omits the masking and shifting required to construct TTBR and PTE values, which carry bits #48 and higher disjoint from the rest of the physical address. The overhead of performing these additional calculations is negligible, and so there is little reason to retain support for two different configurations, and we can simply support whatever the hardware supports. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20241212081841.2168124-14-ardb+git@google.com Signed-off-by: Will Deacon <will@kernel.org> |
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