chs
7d353e82b0
- in PMAP_IS_ACTIVE(), the kernel pmap is always active, and we don't
need to check for curproc being non-NULL since none of the pmap interfaces which are legal to use in interrupt handlers use this macro. - use the hit op when flushing the cache in pmap_kremove(). - avoid trusting the optimizer in pmap_clear_reference(). - fix pmap_clear_modify() to reset the mod-bit emulation so we can detect further modifications to the page, also flushing the cache for any mappings which might have dirty lines.
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