Sönke Holz d3a0ae5c57 Kernel/MM: Replace Region::Cacheable with a more generic MemoryType enum ...

This replaces all usages of Cacheable::Yes with MemoryType::Normal and
Cacheable::No with either MemoryType::NonCacheable or MemoryType::IO,
depending on the context.

The Page{Directory,Table}::set_cache_disabled function therefore also
has been replaced with a more appropriate set_memory_type_function.
Adding a memory_type "getter" would not be as easy, as some
architectures may not support all memory types, so getting the memory
type again may be a lossy conversion. The is_cache_disabled function
was never used, so just simply remove it altogether.

There is no difference between MemoryType::NonCacheable and
MemoryType::IO on x86 for now.

Other architectures currently don't respect the MemoryType at all.

2024-11-23 19:29:50 +01:00

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