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Add a kpte command to DDB. It dumps the PTE of a KVA. This helps

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to analyze faults and TLB/VHPT inconsistencies.
This commit is contained in:
Marcel Moolenaar 2005-04-16 23:38:32 +00:00
parent 1be5319a76
commit 02b47ea204
1 changed files with 20 additions and 0 deletions
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20
sys/ia64/ia64/pmap.c
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@ -2348,4 +2348,24 @@ DB_COMMAND(ttag, db_ttag)
db_printf("0x%lx\n", ia64_ttag(addr));
}
DB_COMMAND(kpte, db_kpte)
{
struct ia64_lpte *pte;
if (!have_addr) {
db_printf("usage: kpte <kva>\n");
return;
}
if (addr < VM_MIN_KERNEL_ADDRESS) {
db_printf("kpte: error: invalid <kva>\n");
return;
}
pte = &ia64_kptdir[KPTE_DIR_INDEX(addr)][KPTE_PTE_INDEX(addr)];
db_printf("kpte at %p:\n", pte);
db_printf(" pte =%016lx\n", pte->pte);
db_printf(" itir =%016lx\n", pte->itir);
db_printf(" tag =%016lx\n", pte->tag);
db_printf(" chain=%016lx\n", pte->chain);
}
#endif