Author: alc
Date: Wed Oct 3 05:42:15 2012
New Revision: 241156
URL: http://svn.freebsd.org/changeset/base/241156
Log:
Reimplement pmap_qremove() using the new TLB invalidation function for
efficiently invalidating address ranges.
Modified:
head/sys/mips/mips/pmap.c
Modified: head/sys/mips/mips/pmap.c
==============================================================================
--- head/sys/mips/mips/pmap.c Wed Oct 3 05:06:45 2012 (r241155)
+++ head/sys/mips/mips/pmap.c Wed Oct 3 05:42:15 2012 (r241156)
@@ -930,15 +930,19 @@ pmap_qenter(vm_offset_t va, vm_page_t *m
void
pmap_qremove(vm_offset_t va, int count)
{
- /*
- * No need to wb/inv caches here,
- * pmap_kremove will do it for us
- */
+ pt_entry_t *pte;
+ vm_offset_t origva;
- while (count-- > 0) {
- pmap_kremove(va);
+ if (count < 1)
+ return;
+ mips_dcache_wbinv_range_index(va, PAGE_SIZE * count);
+ origva = va;
+ do {
+ pte = pmap_pte(kernel_pmap, va);
+ *pte = PTE_G;
va += PAGE_SIZE;
- }
+ } while (--count > 0);
+ pmap_invalidate_range(kernel_pmap, origva, va);
}
/***************************************************
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