sudharson14 / xv6-OS-for-arm-v8

OS support for 64 bit ARM architecture
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Fix access permission in the table descriptor. #1

Closed tsunghanlin closed 7 years ago

tsunghanlin commented 8 years ago

With the addition of commit d8e052b387635 ("target-arm: get_phys_addr_lpae: more xn control") in the qemu, we need more accurate permission control in the descriptor; otherwise, system would get stuck after turning on MMU.