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Differential D19183 Diff 53890 lib/libkvm/kvm_minidump_amd64.c

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lib/libkvm/kvm_minidump_amd64.c

Show First 20 Lines • Show All 363 Lines • ▼ Show 20 Lines for (pdeindex = 0; pdeindex < npdes; pdeindex++) {
if ((pde & AMD64_PG_PS) != 0) { if ((pde & AMD64_PG_PS) != 0) {
/* /*
* Large page. Iterate on each 4K page section * Large page. Iterate on each 4K page section
* within this page. This differs from 4K pages in * within this page. This differs from 4K pages in
* that every page here uses the same PDE to * that every page here uses the same PDE to
* generate permissions. * generate permissions.
*/ */
_kvm_bitmap_set(&bm, pa, AMD64_PAGE_SIZE);
for (i = 0; i < AMD64_NBPDR; i += AMD64_PAGE_SIZE){
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pa = (pde & AMD64_PG_PS_FRAME) + pa = (pde & AMD64_PG_PS_FRAME) +
((va & AMD64_PDRMASK) ^ VA_OFF(vm, va)); ((va & AMD64_PDRMASK) ^ VA_OFF(vm, va));
dva = vm->hdr.dmapbase + pa; dva = vm->hdr.dmapbase + pa;
_kvm_bitmap_set(&bm, pa, AMD64_PAGE_SIZE);
if (!_kvm_visit_cb(kd, cb, arg, pa, va, dva, if (!_kvm_visit_cb(kd, cb, arg, pa, va, dva,
_amd64_entry_to_prot(pde), AMD64_NBPDR, pgsz)) { _amd64_entry_to_prot(pde), AMD64_PAGE_SIZE, pgsz)) {
goto out; goto out;
}
va += AMD64_PAGE_SIZE;
} }
continue; continue;
} }
/* 4K pages: pde references another page of entries. */ /* 4K pages: pde references another page of entries. */
ptes = _amd64_pde_first_pte(kd, pdeindex); ptes = _amd64_pde_first_pte(kd, pdeindex);
/* Ignore page directory pages that were not dumped. */ /* Ignore page directory pages that were not dumped. */
if (ptes == NULL) if (ptes == NULL)
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