23553d6b94
In 48ba9b2669e6 we switched from creating level 1 blocks to smaller level 2 blocks when creating the early arm64 page tables. On issue was that they had a different meaning for register x7. The former used it to hold page table attributes, while the latter held just the memory type. This caused these attributes to be incorrectly shifted. Fix this by changing the meaning of x7 to hold the block attributes and fix the only caller that used the old meaning. Most hardware seems to have handled the bits being off however qemu failed to boot as reserved bits that should be zero were being set and qemu fails to clear these when translating from a virtual address to a physical address. Sponsored by: Innovate UK
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