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mmap(): no physical memory pre-allocation for Intel 128MB mapping

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Balazs Gerofi
2017-01-17 15:13:28 +09:00
parent 2473025201
commit c1dae4d8b0
1 changed files with 2 additions and 3 deletions
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5
kernel/syscall.c
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@ -1232,14 +1232,13 @@ do_mmap(const intptr_t addr0, const size_t len0, const int prot,
populated_mapping = 1;
}
#if 0
/* XXX: Intel MPI 128MB mapping.. */
if (len == 134217728) {
kprintf("%s: 128MB mapping -> no prefault\n",
dkprintf("%s: %ld bytes mapping -> no prefault\n",
__FUNCTION__, len);
vrflags |= VR_DEMAND_PAGING;
populated_mapping = 0;
}
#endif
if (!(prot & PROT_WRITE)) {
error = set_host_vma(addr, len, PROT_READ);