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- resizing the tte_hash in pmap_copy is not likely to occur

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- the implementation also made the mistake of assuming the
  dst_pmap is the current pmap
This commit is contained in:
Kip Macy 2006-12-24 01:56:35 +00:00
parent 34e1241b9d
commit 83e3f6ad3e
1 changed files with 10 additions and 5 deletions
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15
sys/sun4v/sun4v/pmap.c
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@ -972,7 +972,6 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
vm_offset_t addr, end_addr;
end_addr = src_addr + len;
/*
* Don't let optional prefaulting of pages make us go
* way below the low water mark of free pages or way
@ -1008,14 +1007,14 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
}
}
}
PMAP_UNLOCK(src_pmap);
if (tte_hash_needs_resize(dst_pmap->pm_hash))
pmap_tte_hash_resize(dst_pmap);
sched_unpin();
vm_page_unlock_queues();
PMAP_UNLOCK(src_pmap);
PMAP_UNLOCK(dst_pmap);
}
void
@ -1584,6 +1583,7 @@ pmap_invalidate_all(pmap_t pmap)
boolean_t
pmap_is_modified(vm_page_t m)
{
return (tte_get_phys_bit(m, VTD_W));
}
@ -1827,6 +1827,11 @@ pmap_qenter(vm_offset_t sva, vm_page_t *m, int count)
va = sva;
while (count-- > 0) {
/*
* If we make explicit calls to tte_hash_update
* we can determine if any of the pages have been mapped
* before - this can save us a pmap_invalidate_range
*/
pmap_kenter(va, VM_PAGE_TO_PHYS(*m));
va += PAGE_SIZE;
m++;