acab8881bc
there was a small window between modifying mmutop and switching the asid where the core could bring in the new entries under the old asid into the tlb due to speculation / prefetching. this change moves the entering of the page tables into mmutop after setttbr() to prevent this scenario. due to us switching to the resereved asid 0 on procsave()->putasid(), the only asid that could have potentially been poisoned would be asid 0 which does not have any user mappings. so this did not show any noticable effect. |
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