static x86pte_t
get_pte(hat_t *hat, htable_t *htable, uintptr_t addr)
{
x86pte_t buf;
if (htable->ht_flags & HTABLE_COPIED) {
uintptr_t ptr = (uintptr_t)hat->hat_copied_ptes;
ptr += va2entry(htable, addr) << mmu.pte_size_shift;
return (*(x86pte_t *)ptr);
}
paddr_t paddr = mmu_ptob((paddr_t)htable->ht_pfn);
paddr += va2entry(htable, addr) << mmu.pte_size_shift;
if ((mdb_pread(&buf, mmu.pte_size, paddr)) == mmu.pte_size)
return (buf);
return (0);
}
static x86pte_t
get_pte(hat_t *hat, htable_t *htable, uintptr_t addr)
{
x86pte_t buf;
x86pte32_t *pte32 = (x86pte32_t *)&buf;
size_t len;
if (htable->ht_flags & HTABLE_VLP) {
uintptr_t ptr = (uintptr_t)hat->hat_vlp_ptes;
ptr += va2entry(htable, addr) << mmu.pte_size_shift;
len = mdb_vread(&buf, mmu.pte_size, ptr);
} else {
paddr_t paddr = mmu_ptob((paddr_t)htable->ht_pfn);
paddr += va2entry(htable, addr) << mmu.pte_size_shift;
len = mdb_pread(&buf, mmu.pte_size, paddr);
}
if (len != mmu.pte_size)
return (0);
if (mmu.pte_size == sizeof (x86pte_t))
return (buf);
return (*pte32);
}
static int
do_ptable_dcmd(pfn_t pfn)
{
struct hat *hatp;
struct hat hat;
htable_t *ht;
htable_t htable;
uintptr_t base;
int h;
int level;
int entry;
uintptr_t pagesize;
x86pte_t pte;
x86pte_t buf;
x86pte32_t *pte32 = (x86pte32_t *)&buf;
physaddr_t paddr;
size_t len;
/*
* The hats are kept in a list with khat at the head.
*/
for (hatp = khat; hatp != NULL; hatp = hat.hat_next) {
/*
* read the hat and its hash table
*/
if (mdb_vread(&hat, sizeof (hat), (uintptr_t)hatp) == -1) {
mdb_warn("Couldn't read struct hat\n");
return (DCMD_ERR);
}
/*
* read the htable hashtable
*/
paddr = 0;
for (h = 0; h < hat.hat_num_hash; ++h) {
if (mdb_vread(&ht, sizeof (htable_t *),
(uintptr_t)(hat.hat_ht_hash + h)) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
for (; ht != NULL; ht = htable.ht_next) {
if (mdb_vread(&htable, sizeof (htable_t),
(uintptr_t)ht) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
/*
* Is this the PFN for this htable
*/
if (htable.ht_pfn == pfn)
goto found_it;
}
}
}
found_it:
if (htable.ht_pfn == pfn) {
mdb_printf("htable=%p\n", ht);
level = htable.ht_level;
base = htable.ht_vaddr;
pagesize = mmu.level_size[level];
} else {
mdb_printf("Unknown pagetable - assuming level/addr 0");
level = 0; /* assume level == 0 for PFN */
base = 0;
pagesize = MMU_PAGESIZE;
}
paddr = mmu_ptob((physaddr_t)pfn);
for (entry = 0; entry < mmu.ptes_per_table; ++entry) {
len = mdb_pread(&buf, mmu.pte_size,
paddr + entry * mmu.pte_size);
if (len != mmu.pte_size)
return (DCMD_ERR);
if (mmu.pte_size == sizeof (x86pte_t))
pte = buf;
else
pte = *pte32;
if (pte == 0)
continue;
mdb_printf("[%3d] va=%p ", entry, base + entry * pagesize);
do_pte_dcmd(level, pte);
}
done:
return (DCMD_OK);
}
/*
* Report all hat's that either use PFN as a page table or that map the page.
*/
static int
do_report_maps(pfn_t pfn)
{
struct hat *hatp;
struct hat hat;
htable_t *ht;
htable_t htable;
uintptr_t base;
int h;
int level;
int entry;
x86pte_t pte;
x86pte_t buf;
x86pte32_t *pte32 = (x86pte32_t *)&buf;
physaddr_t paddr;
size_t len;
/*
* The hats are kept in a list with khat at the head.
*/
for (hatp = khat; hatp != NULL; hatp = hat.hat_next) {
/*
* read the hat and its hash table
*/
if (mdb_vread(&hat, sizeof (hat), (uintptr_t)hatp) == -1) {
mdb_warn("Couldn't read struct hat\n");
return (DCMD_ERR);
}
/*
* read the htable hashtable
*/
paddr = 0;
for (h = 0; h < hat.hat_num_hash; ++h) {
if (mdb_vread(&ht, sizeof (htable_t *),
(uintptr_t)(hat.hat_ht_hash + h)) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
for (; ht != NULL; ht = htable.ht_next) {
if (mdb_vread(&htable, sizeof (htable_t),
(uintptr_t)ht) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
/*
* only report kernel addresses once
*/
if (hatp != khat &&
htable.ht_vaddr >= kernelbase)
continue;
/*
* Is the PFN a pagetable itself?
*/
if (htable.ht_pfn == pfn) {
mdb_printf("Pagetable for "
"hat=%p htable=%p\n", hatp, ht);
continue;
}
/*
* otherwise, examine page mappings
*/
level = htable.ht_level;
if (level > mmu.max_page_level)
continue;
paddr = mmu_ptob((physaddr_t)htable.ht_pfn);
for (entry = 0;
entry < HTABLE_NUM_PTES(&htable);
++entry) {
base = htable.ht_vaddr + entry *
mmu.level_size[level];
/*
* only report kernel addresses once
*/
if (hatp != khat &&
base >= kernelbase)
continue;
len = mdb_pread(&buf, mmu.pte_size,
paddr + entry * mmu.pte_size);
if (len != mmu.pte_size)
return (DCMD_ERR);
if (mmu.pte_size == sizeof (x86pte_t))
pte = buf;
else
pte = *pte32;
if ((pte & PT_VALID) == 0)
continue;
if (level == 0 || !(pte & PT_PAGESIZE))
pte &= PT_PADDR;
else
pte &= PT_PADDR_LGPG;
if (mmu_btop(mdb_ma_to_pa(pte)) != pfn)
continue;
mdb_printf("hat=%p maps addr=%p\n",
hatp, (caddr_t)base);
}
}
}
}
done:
return (DCMD_OK);
}
static int
do_ptable_dcmd(pfn_t pfn, uint64_t level)
{
struct hat *hatp;
struct hat hat;
htable_t *ht;
htable_t htable;
uintptr_t base;
int h;
int entry;
uintptr_t pagesize;
x86pte_t pte;
physaddr_t paddr;
size_t len;
/*
* The hats are kept in a list with khat at the head.
*/
for (hatp = khat; hatp != NULL; hatp = hat.hat_next) {
/*
* read the hat and its hash table
*/
if (mdb_vread(&hat, sizeof (hat), (uintptr_t)hatp) == -1) {
mdb_warn("Couldn't read struct hat\n");
return (DCMD_ERR);
}
/*
* read the htable hashtable
*/
paddr = 0;
for (h = 0; h < hat.hat_num_hash; ++h) {
if (mdb_vread(&ht, sizeof (htable_t *),
(uintptr_t)(hat.hat_ht_hash + h)) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
for (; ht != NULL; ht = htable.ht_next) {
if (mdb_vread(&htable, sizeof (htable_t),
(uintptr_t)ht) == -1) {
mdb_warn("Couldn't read htable\n");
return (DCMD_ERR);
}
/*
* Is this the PFN for this htable
*/
if (htable.ht_pfn == pfn)
goto found_it;
}
}
}
found_it:
if (htable.ht_pfn == pfn) {
mdb_printf("htable=%p\n", ht);
if (level == (uint64_t)-1) {
level = htable.ht_level;
} else if (htable.ht_level != level) {
mdb_warn("htable has level %d but forcing level %lu\n",
htable.ht_level, level);
}
base = htable.ht_vaddr;
pagesize = mmu.level_size[level];
} else {
if (level == (uint64_t)-1)
level = 0;
mdb_warn("couldn't find matching htable, using level=%lu, "
"base address=0x0\n", level);
base = 0;
pagesize = mmu.level_size[level];
}
paddr = mmu_ptob((physaddr_t)pfn);
for (entry = 0; entry < mmu.ptes_per_table; ++entry) {
len = mdb_pread(&pte, mmu.pte_size,
paddr + entry * mmu.pte_size);
if (len != mmu.pte_size)
return (DCMD_ERR);
if (pte == 0)
continue;
mdb_printf("[%3d] va=0x%p ", entry,
VA_SIGN_EXTEND(base + entry * pagesize));
do_pte_dcmd(level, pte);
}
done:
return (DCMD_OK);
}
int
ptmap_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
physaddr_t paddrs[MAX_NUM_LEVEL] = { 0, };
size_t entry[MAX_NUM_LEVEL] = { 0, };
uintptr_t start = (uintptr_t)-1;
boolean_t writable = B_FALSE;
boolean_t user = B_FALSE;
boolean_t wflag = B_FALSE;
level_t curlevel;
if ((flags & DCMD_ADDRSPEC) == 0)
return (DCMD_USAGE);
if (mdb_getopts(argc, argv,
'w', MDB_OPT_SETBITS, TRUE, &wflag, NULL) != argc)
return (DCMD_USAGE);
init_mmu();
if (mmu.num_level == 0)
return (DCMD_ERR);
curlevel = mmu.max_level;
paddrs[curlevel] = addr & MMU_PAGEMASK;
for (;;) {
physaddr_t pte_addr;
x86pte_t pte;
pte_addr = paddrs[curlevel] +
(entry[curlevel] << mmu.pte_size_shift);
if (mdb_pread(&pte, sizeof (pte), pte_addr) != sizeof (pte)) {
mdb_warn("couldn't read pte at %p", pte_addr);
return (DCMD_ERR);
}
if (PTE_GET(pte, PT_VALID) == 0) {
if (start != (uintptr_t)-1) {
ptmap_report(entry, start,
user, writable, wflag);
start = (uintptr_t)-1;
}
} else if (curlevel == 0 || PTE_GET(pte, PT_PAGESIZE)) {
if (start == (uintptr_t)-1) {
start = entry2va(entry);
user = PTE_GET(pte, PT_USER);
writable = PTE_GET(pte, PT_WRITABLE);
} else if (user != PTE_GET(pte, PT_USER) ||
writable != PTE_GET(pte, PT_WRITABLE)) {
ptmap_report(entry, start,
user, writable, wflag);
start = entry2va(entry);
user = PTE_GET(pte, PT_USER);
writable = PTE_GET(pte, PT_WRITABLE);
}
} else {
/* Descend a level. */
physaddr_t pa = mmu_ptob(pte2mfn(pte, curlevel));
paddrs[--curlevel] = pa;
entry[curlevel] = 0;
continue;
}
while (++entry[curlevel] == mmu.ptes_per_table) {
/* Ascend back up. */
entry[curlevel] = 0;
if (curlevel == mmu.max_level) {
if (start != (uintptr_t)-1) {
ptmap_report(entry, start,
user, writable, wflag);
}
goto out;
}
curlevel++;
}
}
out:
return (DCMD_OK);
}