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using the direct-mapping of physmem to force PTE data structures to be physically addressable so the interrupt-time real-mode DSI trap handler could perform PTE spills. However, the memory may have been > 256Mb, which would have caused a BAT spill and double-interrupt. The new trap code no longer handles PTE spills, so the requirement that these pages be direct-mapped no longer applies. The irony is UMA_MD_SMALL_ALLOC will return direct mappings for these structs :-) |
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| .. | ||
| clock.c | ||
| copyinout.c | ||
| interrupt.c | ||
| locore.S | ||
| machdep.c | ||
| mmu_oea.c | ||
| nexus.c | ||
| ofw_machdep.c | ||
| ofwmagic.S | ||
| swtch.S | ||
| trap.c | ||
| trap_subr.S | ||
| uma_machdep.c | ||
| vm_machdep.c | ||