HMM_PFN_ERROR
WARN_ON(fault && range.hmm_pfns[pfn_index] & HMM_PFN_ERROR);
if (entry & HMM_PFN_ERROR) {
WARN_ON(*pfns & HMM_PFN_ERROR);
return hmm_pfns_fill(addr, end, range, HMM_PFN_ERROR);
new_pfn_flags = HMM_PFN_ERROR;
return hmm_pfns_fill(start, end, range, HMM_PFN_ERROR);
return hmm_pfns_fill(start, end, range, HMM_PFN_ERROR);
return hmm_pfns_fill(start, end, range, HMM_PFN_ERROR);
hmm_pfns_fill(start, end, range, HMM_PFN_ERROR);