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workaround kernel malloc's brittleness

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- don't shuffle phys_avail following kernel to the beginning if the
  range is less than what would remain in a 256MB page (248MB)
This commit is contained in:
Kip Macy 2006-12-12 03:50:06 +00:00
parent bc6d91c4b6
commit a23c97ad89
1 changed files with 8 additions and 1 deletions
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9
sys/sun4v/sun4v/pmap.c
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@ -654,14 +654,21 @@ pmap_bootstrap(vm_offset_t ekva)
for (j = 0; phys_avail[j] != 0; j += 2)
if (nucleus_memory_start < phys_avail[j])
break;
/*
* Don't shuffle unless we have a full 256M page in the range
* our kernel malloc appears to be horribly brittle
*/
if ((phys_avail[j + 1] - phys_avail[j]) < PAGE_SIZE_4M*62)
goto skipshuffle;
for (i = j, k = 0; phys_avail[i] != 0; k++, i++)
tmp_phys_avail[k] = phys_avail[i];
for (i = 0; i < j; i++)
tmp_phys_avail[k + i] = phys_avail[i];
for (i = 0; i < 128; i++)
phys_avail[i] = tmp_phys_avail[i];
skipshuffle:
for (i = 0; real_phys_avail[i] != 0; i += 2)
if (pmap_debug_range || pmap_debug)
printf("real_phys_avail[%d]=0x%lx real_phys_avail[%d]=0x%lx\n",