Re: pmap_enter vs pmap_qenter
:Hi,
:
:If I have a vm_page_t array, 'mp' for this exercise, should:
:
: pmap_qenter(addr, mp, npages);
:
:be equivalent to
:
: for (i = 0; i < npages; i += PAGE_SIZE)
: pmap_enter(&kernel_pmap, addr + i, mp[i / PAGE_SIZE], VM_PROT_ALL, 1);
:
:if all of the pages in the array have had m->valid set to
:VM_PAGE_BITS_ALL and vm_page_wire() called on them?
:
:Thanks,
:-- vs
Well, pmap_kenter() and pmap_qenter() are designed for the kernel_map
only, whereas pmap_enter() is designed for user pmaps but happens to
also work on the kernel_map.
p.s. on that example my assumption is 'npages' is meant to be in bytes
and not pages.
-Matt
Matthew Dillon
<dillon@backplane.com>
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