*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+
+#include <mach_assert.h>
+
#include <vm/pmap.h>
#include <vm/vm_map.h>
+#include <vm/vm_kern.h>
#include <kern/ledger.h>
#include <i386/pmap_internal.h>
unsigned int i;
uint64_t num_pde;
+ assert(!is_ept_pmap(grand));
+ assert(!is_ept_pmap(subord));
+
if ((size & (pmap_nesting_size_min-1)) ||
(va_start & (pmap_nesting_size_min-1)) ||
(nstart & (pmap_nesting_size_min-1)) ||
i += (uint32_t) NPDEPG;
}
else {
- npde = pmap_pde(subord, nstart);
+ npde = pmap_pde(subord, vaddr);
if (npde == 0)
- panic("pmap_nest: no npde, subord %p nstart 0x%llx", subord, nstart);
+ panic("pmap_nest: no npde, subord %p vaddr 0x%llx", subord, vaddr);
tpde = *npde;
- nstart += NBPDE;
pde = pmap_pde(grand, vaddr);
if ((0 == pde) && cpu_64bit) {
PMAP_UNLOCK(grand);
grand, vaddr, size);
}
+ assert(!is_ept_pmap(grand));
+
/* align everything to PDE boundaries */
va_start = vaddr & ~(NBPDE-1);
va_end = (vaddr + size + NBPDE - 1) & ~(NBPDE-1);
return KERN_SUCCESS;
}
+kern_return_t
+pmap_unnest_options(
+ pmap_t grand,
+ addr64_t vaddr,
+ __unused uint64_t size,
+ __unused unsigned int options) {
+ return pmap_unnest(grand, vaddr, size);
+}
+
/* Invoked by the Mach VM to determine the platform specific unnest region */
boolean_t pmap_adjust_unnest_parameters(pmap_t p, vm_map_offset_t *s, vm_map_offset_t *e) {
ppnum_t ppn = 0;
pd_entry_t pde;
pt_entry_t pte;
+ boolean_t is_ept;
+
+ is_ept = is_ept_pmap(pmap);
mp_disable_preemption();
pdep = pmap_pde(pmap, va);
- if ((pdep != PD_ENTRY_NULL) && ((pde = *pdep) & INTEL_PTE_VALID)) {
- if (pde & INTEL_PTE_PS) {
+ if ((pdep != PD_ENTRY_NULL) && ((pde = *pdep) & PTE_VALID_MASK(is_ept))) {
+ if (pde & PTE_PS) {
ppn = (ppnum_t) i386_btop(pte_to_pa(pde));
ppn += (ppnum_t) ptenum(va);
}
else {
ptp = pmap_pte(pmap, va);
- if ((PT_ENTRY_NULL != ptp) && (((pte = *ptp) & INTEL_PTE_VALID) != 0)) {
+ if ((PT_ENTRY_NULL != ptp) && (((pte = *ptp) & PTE_VALID_MASK(is_ept)) != 0)) {
ppn = (ppnum_t) i386_btop(pte_to_pa(pte));
}
}
/*
* Update cache attributes for all extant managed mappings.
* Assumes PV for this page is locked, and that the page
- * is managed.
+ * is managed. We assume that this physical page may be mapped in
+ * both EPT and normal Intel PTEs, so we convert the attributes
+ * to the corresponding format for each pmap.
+ *
+ * We assert that the passed set of attributes is a subset of the
+ * PHYS_CACHEABILITY_MASK.
*/
-
void
pmap_update_cache_attributes_locked(ppnum_t pn, unsigned attributes) {
pv_rooted_entry_t pv_h, pv_e;
vm_map_offset_t vaddr;
pmap_t pmap;
pt_entry_t *ptep;
+ boolean_t is_ept;
+ unsigned ept_attributes;
assert(IS_MANAGED_PAGE(pn));
+ assert(((~PHYS_CACHEABILITY_MASK) & attributes) == 0);
+
+ /* We don't support the PTA bit for EPT PTEs */
+ if (attributes & INTEL_PTE_NCACHE)
+ ept_attributes = INTEL_EPT_NCACHE;
+ else
+ ept_attributes = INTEL_EPT_WB;
pv_h = pai_to_pvh(pn);
/* TODO: translate the PHYS_* bits to PTE bits, while they're
do {
pmap = pv_e->pmap;
- vaddr = pv_e->va;
+ vaddr = PVE_VA(pv_e);
ptep = pmap_pte(pmap, vaddr);
-
+
if (0 == ptep)
panic("pmap_update_cache_attributes_locked: Missing PTE, pmap: %p, pn: 0x%x vaddr: 0x%llx kernel_pmap: %p", pmap, pn, vaddr, kernel_pmap);
+ is_ept = is_ept_pmap(pmap);
+
nexth = (pv_hashed_entry_t)queue_next(&pvh_e->qlink);
- pmap_update_pte(ptep, PHYS_CACHEABILITY_MASK, attributes);
+ if (!is_ept) {
+ pmap_update_pte(ptep, PHYS_CACHEABILITY_MASK, attributes);
+ } else {
+ pmap_update_pte(ptep, INTEL_EPT_CACHE_MASK, ept_attributes);
+ }
PMAP_UPDATE_TLBS(pmap, vaddr, vaddr + PAGE_SIZE);
pvh_e = nexth;
} while ((pv_e = (pv_rooted_entry_t)nexth) != pv_h);
void
pmap_enter(
- register pmap_t pmap,
+ pmap_t pmap,
vm_map_offset_t vaddr,
ppnum_t pn,
vm_prot_t prot,
kern_return_t
pmap_enter_options(
- register pmap_t pmap,
+ pmap_t pmap,
vm_map_offset_t vaddr,
ppnum_t pn,
vm_prot_t prot,
uint64_t delpage_pde_index = 0;
pt_entry_t old_pte;
kern_return_t kr_expand;
+ boolean_t is_ept;
+ boolean_t is_altacct;
pmap_intr_assert();
if (pmap == PMAP_NULL)
return KERN_INVALID_ARGUMENT;
+ is_ept = is_ept_pmap(pmap);
+
/* N.B. We can be supplied a zero page frame in the NOENTER case, it's an
* unused value for that scenario.
*/
* pmap is always expanded to include enough hardware
* pages to map one VM page.
*/
- if(superpage) {
+ if (superpage) {
while ((pte = pmap64_pde(pmap, vaddr)) == PD_ENTRY_NULL) {
/* need room for another pde entry */
PMAP_UNLOCK(pmap);
return KERN_SUCCESS;
}
- if (superpage && *pte && !(*pte & INTEL_PTE_PS)) {
+ if (superpage && *pte && !(*pte & PTE_PS)) {
/*
* There is still an empty page table mapped that
* was used for a previous base page mapping.
old_pa_locked = FALSE;
if (old_pa == 0 &&
- (*pte & INTEL_PTE_COMPRESSED)) {
+ PTE_IS_COMPRESSED(*pte)) {
+ /*
+ * "pmap" should be locked at this point, so this should
+ * not race with another pmap_enter() or pmap_remove_range().
+ */
+ assert(pmap != kernel_pmap);
+
/* one less "compressed" */
OSAddAtomic64(-1, &pmap->stats.compressed);
+ pmap_ledger_debit(pmap, task_ledgers.internal_compressed,
+ PAGE_SIZE);
+ if (*pte & PTE_COMPRESSED_ALT) {
+ pmap_ledger_debit(
+ pmap,
+ task_ledgers.alternate_accounting_compressed,
+ PAGE_SIZE);
+ } else {
+ /* was part of the footprint */
+ pmap_ledger_debit(pmap, task_ledgers.phys_footprint,
+ PAGE_SIZE);
+ }
/* marker will be cleared below */
}
*/
if (old_pa == pa) {
pt_entry_t old_attributes =
- *pte & ~(INTEL_PTE_REF | INTEL_PTE_MOD);
+ *pte & ~(PTE_REF(is_ept) | PTE_MOD(is_ept));
/*
* May be changing its wired attribute or protection
*/
- template = pa_to_pte(pa) | INTEL_PTE_VALID;
- template |= pmap_get_cache_attributes(pa_index(pa));
+ template = pa_to_pte(pa);
+
+ /* ?: WORTH ASSERTING THAT AT LEAST ONE RWX (implicit valid) PASSED FOR EPT? */
+ if (!is_ept) {
+ template |= INTEL_PTE_VALID;
+ } else {
+ template |= INTEL_EPT_IPTA;
+ }
+
+ template |= pmap_get_cache_attributes(pa_index(pa), is_ept);
- if (VM_MEM_NOT_CACHEABLE ==
- (flags & (VM_MEM_NOT_CACHEABLE | VM_WIMG_USE_DEFAULT))) {
+ /*
+ * We don't support passing VM_MEM_NOT_CACHEABLE flags for EPT PTEs
+ */
+ if (!is_ept && (VM_MEM_NOT_CACHEABLE ==
+ (flags & (VM_MEM_NOT_CACHEABLE | VM_WIMG_USE_DEFAULT)))) {
if (!(flags & VM_MEM_GUARDED))
template |= INTEL_PTE_PTA;
template |= INTEL_PTE_NCACHE;
}
- if (pmap != kernel_pmap)
+ if (pmap != kernel_pmap && !is_ept)
template |= INTEL_PTE_USER;
+
+ if (prot & VM_PROT_READ)
+ template |= PTE_READ(is_ept);
+
if (prot & VM_PROT_WRITE) {
- template |= INTEL_PTE_WRITE;
+ template |= PTE_WRITE(is_ept);
+ if (is_ept && !pmap_ept_support_ad) {
+ template |= PTE_MOD(is_ept);
+ if (old_pa_locked) {
+ assert(IS_MANAGED_PAGE(pai));
+ pmap_phys_attributes[pai] |= PHYS_MODIFIED;
+ }
+ }
+ }
+ if (prot & VM_PROT_EXECUTE) {
+ assert(set_NX == 0);
+ template = pte_set_ex(template, is_ept);
}
if (set_NX)
- template |= INTEL_PTE_NX;
+ template = pte_remove_ex(template, is_ept);
if (wired) {
- template |= INTEL_PTE_WIRED;
+ template |= PTE_WIRED;
if (!iswired(old_attributes)) {
OSAddAtomic(+1, &pmap->stats.wired_count);
pmap_ledger_credit(pmap, task_ledgers.wired_mem, PAGE_SIZE);
pmap_ledger_debit(pmap, task_ledgers.wired_mem, PAGE_SIZE);
}
}
+
if (superpage) /* this path can not be used */
- template |= INTEL_PTE_PS; /* to change the page size! */
+ template |= PTE_PS; /* to change the page size! */
if (old_attributes == template)
goto dont_update_pte;
/* Determine delta, PV locked */
need_tlbflush =
- ((old_attributes ^ template) != INTEL_PTE_WIRED);
+ ((old_attributes ^ template) != PTE_WIRED);
- if (need_tlbflush == TRUE && !(old_attributes & INTEL_PTE_WRITE)) {
- if ((old_attributes ^ template) == INTEL_PTE_WRITE)
+ if (need_tlbflush == TRUE && !(old_attributes & PTE_WRITE(is_ept))) {
+ if ((old_attributes ^ template) == PTE_WRITE(is_ept))
need_tlbflush = FALSE;
}
+ /* For hardware that doesn't have EPT AD support, we always set REFMOD for EPT PTEs */
+ if (is_ept && !pmap_ept_support_ad) {
+ template |= PTE_REF(is_ept);
+ if (old_pa_locked) {
+ assert(IS_MANAGED_PAGE(pai));
+ pmap_phys_attributes[pai] |= PHYS_REFERENCED;
+ }
+ }
+
/* store modified PTE and preserve RC bits */
pt_entry_t npte, opte;;
do {
opte = *pte;
- npte = template | (opte & (INTEL_PTE_REF | INTEL_PTE_MOD));
+ npte = template | (opte & (PTE_REF(is_ept) | PTE_MOD(is_ept)));
} while (!pmap_cmpx_pte(pte, opte, npte));
dont_update_pte:
if (old_pa_locked) {
*/
if (old_pa != (pmap_paddr_t) 0) {
+ boolean_t was_altacct;
/*
* Don't do anything to pages outside valid memory here.
*/
/* invalidate the PTE */
- pmap_update_pte(pte, INTEL_PTE_VALID, 0);
+ pmap_update_pte(pte, PTE_VALID_MASK(is_ept), 0);
/* propagate invalidate everywhere */
PMAP_UPDATE_TLBS(pmap, vaddr, vaddr + PAGE_SIZE);
/* remember reference and change */
old_pte = *pte;
- oattr = (char) (old_pte & (PHYS_MODIFIED | PHYS_REFERENCED));
+ oattr = (char) (old_pte & (PTE_MOD(is_ept) | PTE_REF(is_ept)));
/* completely invalidate the PTE */
pmap_store_pte(pte, 0);
+ if (IS_MANAGED_PAGE(pai)) {
+ /*
+ * Remove the mapping from the pvlist for
+ * this physical page.
+ * We'll end up with either a rooted pv or a
+ * hashed pv
+ */
+ pvh_e = pmap_pv_remove(pmap, vaddr, (ppnum_t *) &pai, &old_pte, &was_altacct);
+ }
+
if (IS_MANAGED_PAGE(pai)) {
pmap_assert(old_pa_locked == TRUE);
pmap_ledger_debit(pmap, task_ledgers.phys_mem, PAGE_SIZE);
- pmap_ledger_debit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
assert(pmap->stats.resident_count >= 1);
OSAddAtomic(-1, &pmap->stats.resident_count);
if (pmap != kernel_pmap) {
+ /* update pmap stats */
if (IS_REUSABLE_PAGE(pai)) {
- assert(pmap->stats.reusable > 0);
+ PMAP_STATS_ASSERTF(
+ (pmap->stats.reusable > 0,
+ "reusable %d",
+ pmap->stats.reusable));
OSAddAtomic(-1, &pmap->stats.reusable);
} else if (IS_INTERNAL_PAGE(pai)) {
- assert(pmap->stats.internal > 0);
+ PMAP_STATS_ASSERTF(
+ (pmap->stats.internal > 0,
+ "internal %d",
+ pmap->stats.internal));
OSAddAtomic(-1, &pmap->stats.internal);
} else {
- assert(pmap->stats.external > 0);
+ PMAP_STATS_ASSERTF(
+ (pmap->stats.external > 0,
+ "external %d",
+ pmap->stats.external));
OSAddAtomic(-1, &pmap->stats.external);
}
+
+ /* update ledgers */
+ if (was_altacct) {
+ assert(IS_INTERNAL_PAGE(pai));
+ pmap_ledger_debit(pmap, task_ledgers.internal, PAGE_SIZE);
+ pmap_ledger_debit(pmap, task_ledgers.alternate_accounting, PAGE_SIZE);
+ } else if (IS_REUSABLE_PAGE(pai)) {
+ assert(!was_altacct);
+ assert(IS_INTERNAL_PAGE(pai));
+ /* was already not in phys_footprint */
+ } else if (IS_INTERNAL_PAGE(pai)) {
+ assert(!was_altacct);
+ assert(!IS_REUSABLE_PAGE(pai));
+ pmap_ledger_debit(pmap, task_ledgers.internal, PAGE_SIZE);
+ pmap_ledger_debit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
+ } else {
+ /* not an internal page */
+ }
}
if (iswired(*pte)) {
assert(pmap->stats.wired_count >= 1);
pmap_ledger_debit(pmap, task_ledgers.wired_mem,
PAGE_SIZE);
}
- pmap_phys_attributes[pai] |= oattr;
- /*
- * Remove the mapping from the pvlist for
- * this physical page.
- * We'll end up with either a rooted pv or a
- * hashed pv
- */
- pvh_e = pmap_pv_remove(pmap, vaddr, (ppnum_t *) &pai, &old_pte);
+ if (!is_ept) {
+ pmap_phys_attributes[pai] |= oattr;
+ } else {
+ pmap_phys_attributes[pai] |= ept_refmod_to_physmap(oattr);
+ }
} else {
/*
* No mappings yet, use rooted pv
*/
- pv_h->va = vaddr;
+ pv_h->va_and_flags = vaddr;
pv_h->pmap = pmap;
queue_init(&pv_h->qlink);
} else {
pmap_phys_attributes[pai] &= ~PHYS_REUSABLE;
}
+ if ((options & PMAP_OPTIONS_ALT_ACCT) &&
+ IS_INTERNAL_PAGE(pai)) {
+ pv_h->va_and_flags |= PVE_IS_ALTACCT;
+ is_altacct = TRUE;
+ } else {
+ pv_h->va_and_flags &= ~PVE_IS_ALTACCT;
+ is_altacct = FALSE;
+ }
} else {
/*
* Add new pv_hashed_entry after header.
if (PV_HASHED_ENTRY_NULL == pvh_e)
panic("Mapping alias chain exhaustion, possibly induced by numerous kernel virtual double mappings");
- pvh_e->va = vaddr;
+ pvh_e->va_and_flags = vaddr;
pvh_e->pmap = pmap;
pvh_e->ppn = pn;
+ if ((options & PMAP_OPTIONS_ALT_ACCT) &&
+ IS_INTERNAL_PAGE(pai)) {
+ pvh_e->va_and_flags |= PVE_IS_ALTACCT;
+ is_altacct = TRUE;
+ } else {
+ pvh_e->va_and_flags &= ~PVE_IS_ALTACCT;
+ is_altacct = FALSE;
+ }
pv_hash_add(pvh_e, pv_h);
/*
* for 'managed memory'
*/
pmap_ledger_credit(pmap, task_ledgers.phys_mem, PAGE_SIZE);
- pmap_ledger_credit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
OSAddAtomic(+1, &pmap->stats.resident_count);
if (pmap->stats.resident_count > pmap->stats.resident_max) {
pmap->stats.resident_max = pmap->stats.resident_count;
}
if (pmap != kernel_pmap) {
+ /* update pmap stats */
if (IS_REUSABLE_PAGE(pai)) {
OSAddAtomic(+1, &pmap->stats.reusable);
PMAP_STATS_PEAK(pmap->stats.reusable);
OSAddAtomic(+1, &pmap->stats.external);
PMAP_STATS_PEAK(pmap->stats.external);
}
+
+ /* update ledgers */
+ if (is_altacct) {
+ /* internal but also alternate accounting */
+ assert(IS_INTERNAL_PAGE(pai));
+ pmap_ledger_credit(pmap, task_ledgers.internal, PAGE_SIZE);
+ pmap_ledger_credit(pmap, task_ledgers.alternate_accounting, PAGE_SIZE);
+ /* alternate accounting, so not in footprint */
+ } else if (IS_REUSABLE_PAGE(pai)) {
+ assert(!is_altacct);
+ assert(IS_INTERNAL_PAGE(pai));
+ /* internal but reusable: not in footprint */
+ } else if (IS_INTERNAL_PAGE(pai)) {
+ assert(!is_altacct);
+ assert(!IS_REUSABLE_PAGE(pai));
+ /* internal: add to footprint */
+ pmap_ledger_credit(pmap, task_ledgers.internal, PAGE_SIZE);
+ pmap_ledger_credit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
+ } else {
+ /* not internal: not in footprint */
+ }
}
} else if (last_managed_page == 0) {
/* Account for early mappings created before "managed pages"
* are determined. Consider consulting the available DRAM map.
*/
pmap_ledger_credit(pmap, task_ledgers.phys_mem, PAGE_SIZE);
- pmap_ledger_credit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
OSAddAtomic(+1, &pmap->stats.resident_count);
if (pmap != kernel_pmap) {
#if 00
* Build a template to speed up entering -
* only the pfn changes.
*/
- template = pa_to_pte(pa) | INTEL_PTE_VALID;
+ template = pa_to_pte(pa);
+
+ if (!is_ept) {
+ template |= INTEL_PTE_VALID;
+ } else {
+ template |= INTEL_EPT_IPTA;
+ }
+
+
/*
* DRK: It may be worth asserting on cache attribute flags that diverge
* from the existing physical page attributes.
*/
- template |= pmap_get_cache_attributes(pa_index(pa));
-
- if (flags & VM_MEM_NOT_CACHEABLE) {
+ template |= pmap_get_cache_attributes(pa_index(pa), is_ept);
+
+ /*
+ * We don't support passing VM_MEM_NOT_CACHEABLE flags for EPT PTEs
+ */
+ if (!is_ept && (flags & VM_MEM_NOT_CACHEABLE)) {
if (!(flags & VM_MEM_GUARDED))
template |= INTEL_PTE_PTA;
template |= INTEL_PTE_NCACHE;
}
- if (pmap != kernel_pmap)
+ if (pmap != kernel_pmap && !is_ept)
template |= INTEL_PTE_USER;
- if (prot & VM_PROT_WRITE)
- template |= INTEL_PTE_WRITE;
+ if (prot & VM_PROT_READ)
+ template |= PTE_READ(is_ept);
+ if (prot & VM_PROT_WRITE) {
+ template |= PTE_WRITE(is_ept);
+ if (is_ept && !pmap_ept_support_ad) {
+ template |= PTE_MOD(is_ept);
+ if (IS_MANAGED_PAGE(pai))
+ pmap_phys_attributes[pai] |= PHYS_MODIFIED;
+ }
+ }
+ if (prot & VM_PROT_EXECUTE) {
+ assert(set_NX == 0);
+ template = pte_set_ex(template, is_ept);
+ }
+
if (set_NX)
- template |= INTEL_PTE_NX;
+ template = pte_remove_ex(template, is_ept);
if (wired) {
template |= INTEL_PTE_WIRED;
OSAddAtomic(+1, & pmap->stats.wired_count);
}
if (superpage)
template |= INTEL_PTE_PS;
+
+ /* For hardware that doesn't have EPT AD support, we always set REFMOD for EPT PTEs */
+ if (is_ept && !pmap_ept_support_ad) {
+ template |= PTE_REF(is_ept);
+ if (IS_MANAGED_PAGE(pai))
+ pmap_phys_attributes[pai] |= PHYS_REFERENCED;
+ }
+
pmap_store_pte(pte, template);
/*
m = vm_page_lookup(delpage_pm_obj, (delpage_pde_index * PAGE_SIZE));
if (m == VM_PAGE_NULL)
panic("pmap_enter: pte page not in object");
- vm_object_unlock(delpage_pm_obj);
VM_PAGE_FREE(m);
+ vm_object_unlock(delpage_pm_obj);
OSAddAtomic(-1, &inuse_ptepages_count);
PMAP_ZINFO_PFREE(pmap, PAGE_SIZE);
}
pt_entry_t *spte,
pt_entry_t *epte)
{
- pmap_remove_range_options(pmap, start_vaddr, spte, epte, 0);
+ pmap_remove_range_options(pmap, start_vaddr, spte, epte,
+ PMAP_OPTIONS_REMOVE);
}
void
pv_hashed_entry_t pvh_e;
int pvh_cnt = 0;
int num_removed, num_unwired, num_found, num_invalid;
- int num_device, num_external, num_internal, num_reusable;
- uint64_t num_compressed;
+ int stats_external, stats_internal, stats_reusable;
+ uint64_t stats_compressed;
+ int ledgers_internal, ledgers_alt_internal;
+ uint64_t ledgers_compressed, ledgers_alt_compressed;
ppnum_t pai;
pmap_paddr_t pa;
vm_map_offset_t vaddr;
+ boolean_t is_ept = is_ept_pmap(pmap);
+ boolean_t was_altacct;
num_removed = 0;
num_unwired = 0;
num_found = 0;
num_invalid = 0;
- num_device = 0;
- num_external = 0;
- num_internal = 0;
- num_reusable = 0;
- num_compressed = 0;
+ stats_external = 0;
+ stats_internal = 0;
+ stats_reusable = 0;
+ stats_compressed = 0;
+ ledgers_internal = 0;
+ ledgers_compressed = 0;
+ ledgers_alt_internal = 0;
+ ledgers_alt_compressed = 0;
/* invalidate the PTEs first to "freeze" them */
for (cpte = spte, vaddr = start_vaddr;
cpte < epte;
pa = pte_to_pa(p);
if (pa == 0) {
- if (pmap != kernel_pmap &&
- (options & PMAP_OPTIONS_REMOVE) &&
- (p & INTEL_PTE_COMPRESSED)) {
- /* one less "compressed" */
- num_compressed++;
- /* clear marker */
+ if ((options & PMAP_OPTIONS_REMOVE) &&
+ (PTE_IS_COMPRESSED(p))) {
+ assert(pmap != kernel_pmap);
+ /* one less "compressed"... */
+ stats_compressed++;
+ ledgers_compressed++;
+ if (p & PTE_COMPRESSED_ALT) {
+ /* ... but it used to be "ALTACCT" */
+ ledgers_alt_compressed++;
+ }
+ /* clear marker(s) */
/* XXX probably does not need to be atomic! */
- pmap_update_pte(cpte, INTEL_PTE_COMPRESSED, 0);
+ pmap_update_pte(cpte, INTEL_PTE_COMPRESSED_MASK, 0);
}
continue;
}
* Just remove the mappings.
*/
pmap_store_pte(cpte, 0);
- num_device++;
continue;
}
- if ((p & INTEL_PTE_VALID) == 0)
+ if ((p & PTE_VALID_MASK(is_ept)) == 0)
num_invalid++;
/* invalidate the PTE */
- pmap_update_pte(cpte, INTEL_PTE_VALID, 0);
+ pmap_update_pte(cpte, PTE_VALID_MASK(is_ept), 0);
}
if (num_found == 0) {
cpte++, vaddr += PAGE_SIZE_64) {
pa = pte_to_pa(*cpte);
- if (pa == 0)
+ if (pa == 0) {
+ check_pte_for_compressed_marker:
+ /*
+ * This PTE could have been replaced with a
+ * "compressed" marker after our first "freeze"
+ * loop above, so check again.
+ */
+ if ((options & PMAP_OPTIONS_REMOVE) &&
+ (PTE_IS_COMPRESSED(*cpte))) {
+ assert(pmap != kernel_pmap);
+ /* one less "compressed"... */
+ stats_compressed++;
+ ledgers_compressed++;
+ if (*cpte & PTE_COMPRESSED_ALT) {
+ /* ... but it used to be "ALTACCT" */
+ ledgers_alt_compressed++;
+ }
+ pmap_store_pte(cpte, 0);
+ }
continue;
+ }
pai = pa_index(pa);
pa = pte_to_pa(*cpte);
if (pa == 0) {
UNLOCK_PVH(pai);
- continue;
+ goto check_pte_for_compressed_marker;
}
+
+ /*
+ * Remove the mapping from the pvlist for this physical page.
+ */
+ pvh_e = pmap_pv_remove(pmap, vaddr, (ppnum_t *) &pai, cpte, &was_altacct);
+
num_removed++;
+ /* update pmap stats */
if (IS_REUSABLE_PAGE(pai)) {
- num_reusable++;
+ stats_reusable++;
+ } else if (IS_INTERNAL_PAGE(pai)) {
+ stats_internal++;
+ } else {
+ stats_external++;
+ }
+ /* update ledgers */
+ if (was_altacct) {
+ /* internal and alternate accounting */
+ assert(IS_INTERNAL_PAGE(pai));
+ ledgers_internal++;
+ ledgers_alt_internal++;
+ } else if (IS_REUSABLE_PAGE(pai)) {
+ /* internal but reusable */
+ assert(!was_altacct);
+ assert(IS_INTERNAL_PAGE(pai));
} else if (IS_INTERNAL_PAGE(pai)) {
- num_internal++;
+ /* internal */
+ assert(!was_altacct);
+ assert(!IS_REUSABLE_PAGE(pai));
+ ledgers_internal++;
} else {
- num_external++;
+ /* not internal */
}
/*
* nuke the entry in the page table
*/
/* remember reference and change */
- pmap_phys_attributes[pai] |=
- (char) (*cpte & (PHYS_MODIFIED | PHYS_REFERENCED));
-
- /*
- * Remove the mapping from the pvlist for this physical page.
- */
- pvh_e = pmap_pv_remove(pmap, vaddr, (ppnum_t *) &pai, cpte);
+ if (!is_ept) {
+ pmap_phys_attributes[pai] |=
+ *cpte & (PHYS_MODIFIED | PHYS_REFERENCED);
+ } else {
+ pmap_phys_attributes[pai] |=
+ ept_refmod_to_physmap((*cpte & (INTEL_EPT_REF | INTEL_EPT_MOD))) & (PHYS_MODIFIED | PHYS_REFERENCED);
+ }
/* completely invalidate the PTE */
pmap_store_pte(cpte, 0);
panic("pmap_remove_range: resident_count");
#endif
pmap_ledger_debit(pmap, task_ledgers.phys_mem, machine_ptob(num_removed));
- pmap_ledger_debit(pmap, task_ledgers.phys_footprint, machine_ptob(num_removed));
- assert(pmap->stats.resident_count >= num_removed);
+ PMAP_STATS_ASSERTF((pmap->stats.resident_count >= num_removed,
+ "pmap=%p num_removed=%d stats.resident_count=%d",
+ pmap, num_removed, pmap->stats.resident_count));
OSAddAtomic(-num_removed, &pmap->stats.resident_count);
if (pmap != kernel_pmap) {
-#if 00
- assert(pmap->stats.device >= num_device);
- if (num_device)
- OSAddAtomic(-num_device, &pmap->stats.device);
-#endif /* 00 */
- assert(pmap->stats.external >= num_external);
- if (num_external)
- OSAddAtomic(-num_external, &pmap->stats.external);
- assert(pmap->stats.internal >= num_internal);
- if (num_internal)
- OSAddAtomic(-num_internal, &pmap->stats.internal);
- assert(pmap->stats.reusable >= num_reusable);
- if (num_reusable)
- OSAddAtomic(-num_reusable, &pmap->stats.reusable);
- assert(pmap->stats.compressed >= num_compressed);
- if (num_compressed)
- OSAddAtomic64(-num_compressed, &pmap->stats.compressed);
+ PMAP_STATS_ASSERTF((pmap->stats.external >= stats_external,
+ "pmap=%p stats_external=%d stats.external=%d",
+ pmap, stats_external, pmap->stats.external));
+ PMAP_STATS_ASSERTF((pmap->stats.internal >= stats_internal,
+ "pmap=%p stats_internal=%d stats.internal=%d",
+ pmap, stats_internal, pmap->stats.internal));
+ PMAP_STATS_ASSERTF((pmap->stats.reusable >= stats_reusable,
+ "pmap=%p stats_reusable=%d stats.reusable=%d",
+ pmap, stats_reusable, pmap->stats.reusable));
+ PMAP_STATS_ASSERTF((pmap->stats.compressed >= stats_compressed,
+ "pmap=%p stats_compressed=%lld, stats.compressed=%lld",
+ pmap, stats_compressed, pmap->stats.compressed));
+
+ /* update pmap stats */
+ if (stats_external) {
+ OSAddAtomic(-stats_external, &pmap->stats.external);
+ }
+ if (stats_internal) {
+ OSAddAtomic(-stats_internal, &pmap->stats.internal);
+ }
+ if (stats_reusable)
+ OSAddAtomic(-stats_reusable, &pmap->stats.reusable);
+ if (stats_compressed)
+ OSAddAtomic64(-stats_compressed, &pmap->stats.compressed);
+ /* update ledgers */
+ if (ledgers_internal) {
+ pmap_ledger_debit(pmap,
+ task_ledgers.internal,
+ machine_ptob(ledgers_internal));
+ }
+ if (ledgers_compressed) {
+ pmap_ledger_debit(pmap,
+ task_ledgers.internal_compressed,
+ machine_ptob(ledgers_compressed));
+ }
+ if (ledgers_alt_internal) {
+ pmap_ledger_debit(pmap,
+ task_ledgers.alternate_accounting,
+ machine_ptob(ledgers_alt_internal));
+ }
+ if (ledgers_alt_compressed) {
+ pmap_ledger_debit(pmap,
+ task_ledgers.alternate_accounting_compressed,
+ machine_ptob(ledgers_alt_compressed));
+ }
+ pmap_ledger_debit(pmap,
+ task_ledgers.phys_footprint,
+ machine_ptob((ledgers_internal -
+ ledgers_alt_internal) +
+ (ledgers_compressed -
+ ledgers_alt_compressed)));
}
#if TESTING
if (pmap->stats.wired_count < num_unwired)
panic("pmap_remove_range: wired_count");
#endif
- assert(pmap->stats.wired_count >= num_unwired);
+ PMAP_STATS_ASSERTF((pmap->stats.wired_count >= num_unwired,
+ "pmap=%p num_unwired=%d stats.wired_count=%d",
+ pmap, num_unwired, pmap->stats.wired_count));
OSAddAtomic(-num_unwired, &pmap->stats.wired_count);
pmap_ledger_debit(pmap, task_ledgers.wired_mem, machine_ptob(num_unwired));
addr64_t s64,
addr64_t e64)
{
- pmap_remove_options(map, s64, e64, 0);
+ pmap_remove_options(map, s64, e64, PMAP_OPTIONS_REMOVE);
}
void
pt_entry_t *spte, *epte;
addr64_t l64;
uint64_t deadline;
+ boolean_t is_ept;
pmap_intr_assert();
if (map == PMAP_NULL || s64 == e64)
return;
+ is_ept = is_ept_pmap(map);
+
PMAP_TRACE(PMAP_CODE(PMAP__REMOVE) | DBG_FUNC_START,
map,
(uint32_t) (s64 >> 32), s64,
l64 = e64;
pde = pmap_pde(map, s64);
- if (pde && (*pde & INTEL_PTE_VALID)) {
- if (*pde & INTEL_PTE_PS) {
+ if (pde && (*pde & PTE_VALID_MASK(is_ept))) {
+ if (*pde & PTE_PS) {
/*
* If we're removing a superpage, pmap_remove_range()
* must work on level 2 instead of level 1; and we're
if (s64 < e64 && rdtsc64() >= deadline) {
PMAP_UNLOCK(map)
+ /* TODO: Rapid release/reacquisition can defeat
+ * the "backoff" intent here; either consider a
+ * fair spinlock, or a scheme whereby each lock
+ * attempt marks the processor as within a spinlock
+ * acquisition, and scan CPUs here to determine
+ * if a backoff is necessary, to avoid sacrificing
+ * performance in the common case.
+ */
PMAP_LOCK(map)
deadline = rdtsc64() + max_preemption_latency_tsc;
}
pmap_t pmap;
boolean_t remove;
pt_entry_t new_pte_value;
+ boolean_t is_ept;
pmap_intr_assert();
assert(pn != vm_page_fictitious_addr);
do {
vm_map_offset_t vaddr;
+ if ((options & PMAP_OPTIONS_COMPRESSOR_IFF_MODIFIED) &&
+ (pmap_phys_attributes[pai] & PHYS_MODIFIED)) {
+ /* page was modified, so it will be compressed */
+ options &= ~PMAP_OPTIONS_COMPRESSOR_IFF_MODIFIED;
+ options |= PMAP_OPTIONS_COMPRESSOR;
+ }
+
pmap = pv_e->pmap;
- vaddr = pv_e->va;
+ is_ept = is_ept_pmap(pmap);
+ vaddr = PVE_VA(pv_e);
pte = pmap_pte(pmap, vaddr);
pmap_assert2((pa_index(pte_to_pa(*pte)) == pn),
if (pmap != kernel_pmap &&
(options & PMAP_OPTIONS_COMPRESSOR) &&
IS_INTERNAL_PAGE(pai)) {
- /* adjust "reclaimed" stats */
- OSAddAtomic64(+1, &pmap->stats.compressed);
- PMAP_STATS_PEAK(pmap->stats.compressed);
- pmap->stats.compressed_lifetime++;
- /* mark this PTE as having been "reclaimed" */
- new_pte_value = INTEL_PTE_COMPRESSED;
+ assert(!PTE_IS_COMPRESSED(*pte));
+ /* mark this PTE as having been "compressed" */
+ new_pte_value = PTE_COMPRESSED;
+ if (IS_ALTACCT_PAGE(pai, pv_e)) {
+ new_pte_value |= PTE_COMPRESSED_ALT;
+ }
} else {
new_pte_value = 0;
}
/*
* Remove the mapping, collecting dirty bits.
*/
- pmap_update_pte(pte, INTEL_PTE_VALID, 0);
+ pmap_update_pte(pte, PTE_VALID_MASK(is_ept), 0);
PMAP_UPDATE_TLBS(pmap, vaddr, vaddr+PAGE_SIZE);
- pmap_phys_attributes[pai] |=
- *pte & (PHYS_MODIFIED|PHYS_REFERENCED);
+ if (!is_ept) {
+ pmap_phys_attributes[pai] |=
+ *pte & (PHYS_MODIFIED|PHYS_REFERENCED);
+ } else {
+ pmap_phys_attributes[pai] |=
+ ept_refmod_to_physmap((*pte & (INTEL_EPT_REF | INTEL_EPT_MOD))) & (PHYS_MODIFIED | PHYS_REFERENCED);
+ }
+ if ((options &
+ PMAP_OPTIONS_COMPRESSOR_IFF_MODIFIED) &&
+ IS_INTERNAL_PAGE(pai) &&
+ (pmap_phys_attributes[pai] &
+ PHYS_MODIFIED)) {
+ /*
+ * Page is actually "modified" and
+ * will be compressed. Start
+ * accounting for it as "compressed".
+ */
+ assert(!(options & PMAP_OPTIONS_COMPRESSOR));
+ options &= ~PMAP_OPTIONS_COMPRESSOR_IFF_MODIFIED;
+ options |= PMAP_OPTIONS_COMPRESSOR;
+ assert(new_pte_value == 0);
+ if (pmap != kernel_pmap) {
+ new_pte_value = PTE_COMPRESSED;
+ if (IS_ALTACCT_PAGE(pai, pv_e)) {
+ new_pte_value |= PTE_COMPRESSED_ALT;
+ }
+ }
+ }
pmap_store_pte(pte, new_pte_value);
}
+
#if TESTING
if (pmap->stats.resident_count < 1)
panic("pmap_page_protect: resident_count");
pmap_ledger_debit(pmap, task_ledgers.phys_mem, PAGE_SIZE);
assert(pmap->stats.resident_count >= 1);
OSAddAtomic(-1, &pmap->stats.resident_count);
+
+ /*
+ * We only ever compress internal pages.
+ */
if (options & PMAP_OPTIONS_COMPRESSOR) {
- /*
- * This removal is only being done so we can send this page to
- * the compressor; therefore it mustn't affect total task footprint.
- */
- pmap_ledger_credit(pmap, task_ledgers.phys_compressed, PAGE_SIZE);
- } else {
- pmap_ledger_debit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
+ assert(IS_INTERNAL_PAGE(pai));
}
-
if (pmap != kernel_pmap) {
+ /* update pmap stats */
if (IS_REUSABLE_PAGE(pai)) {
assert(pmap->stats.reusable > 0);
OSAddAtomic(-1, &pmap->stats.reusable);
assert(pmap->stats.external > 0);
OSAddAtomic(-1, &pmap->stats.external);
}
+ if ((options & PMAP_OPTIONS_COMPRESSOR) &&
+ IS_INTERNAL_PAGE(pai)) {
+ /* adjust "compressed" stats */
+ OSAddAtomic64(+1, &pmap->stats.compressed);
+ PMAP_STATS_PEAK(pmap->stats.compressed);
+ pmap->stats.compressed_lifetime++;
+ }
+
+ /* update ledgers */
+ if (IS_ALTACCT_PAGE(pai, pv_e)) {
+ assert(IS_INTERNAL_PAGE(pai));
+ pmap_ledger_debit(pmap, task_ledgers.internal, PAGE_SIZE);
+ pmap_ledger_debit(pmap, task_ledgers.alternate_accounting, PAGE_SIZE);
+ if (options & PMAP_OPTIONS_COMPRESSOR) {
+ pmap_ledger_credit(pmap, task_ledgers.internal_compressed, PAGE_SIZE);
+ pmap_ledger_credit(pmap, task_ledgers.alternate_accounting_compressed, PAGE_SIZE);
+ }
+ } else if (IS_REUSABLE_PAGE(pai)) {
+ assert(!IS_ALTACCT_PAGE(pai, pv_e));
+ assert(IS_INTERNAL_PAGE(pai));
+ if (options & PMAP_OPTIONS_COMPRESSOR) {
+ pmap_ledger_credit(pmap, task_ledgers.internal_compressed, PAGE_SIZE);
+ /* was not in footprint, but is now */
+ pmap_ledger_credit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
+ }
+ } else if (IS_INTERNAL_PAGE(pai)) {
+ assert(!IS_ALTACCT_PAGE(pai, pv_e));
+ assert(!IS_REUSABLE_PAGE(pai));
+ pmap_ledger_debit(pmap, task_ledgers.internal, PAGE_SIZE);
+ /*
+ * Update all stats related to physical
+ * footprint, which only deals with
+ * internal pages.
+ */
+ if (options & PMAP_OPTIONS_COMPRESSOR) {
+ /*
+ * This removal is only being
+ * done so we can send this page
+ * to the compressor; therefore
+ * it mustn't affect total task
+ * footprint.
+ */
+ pmap_ledger_credit(pmap, task_ledgers.internal_compressed, PAGE_SIZE);
+ } else {
+ /*
+ * This internal page isn't
+ * going to the compressor,
+ * so adjust stats to keep
+ * phys_footprint up to date.
+ */
+ pmap_ledger_debit(pmap, task_ledgers.phys_footprint, PAGE_SIZE);
+ }
+ }
}
/*
/*
* Write-protect, after opportunistic refmod collect
*/
- pmap_phys_attributes[pai] |=
- *pte & (PHYS_MODIFIED|PHYS_REFERENCED);
- pmap_update_pte(pte, INTEL_PTE_WRITE, 0);
+ if (!is_ept) {
+ pmap_phys_attributes[pai] |=
+ *pte & (PHYS_MODIFIED|PHYS_REFERENCED);
+ } else {
+ pmap_phys_attributes[pai] |=
+ ept_refmod_to_physmap((*pte & (INTEL_EPT_REF | INTEL_EPT_MOD))) & (PHYS_MODIFIED | PHYS_REFERENCED);
+ }
+ pmap_update_pte(pte, PTE_WRITE(is_ept), 0);
if (options & PMAP_OPTIONS_NOFLUSH)
PMAP_UPDATE_TLBS_DELAYED(pmap, vaddr, vaddr + PAGE_SIZE, (pmap_flush_context *)arg);
if (pvh_e != (pv_hashed_entry_t) pv_h) {
pv_hash_remove(pvh_e);
pv_h->pmap = pvh_e->pmap;
- pv_h->va = pvh_e->va;
+ pv_h->va_and_flags = pvh_e->va_and_flags;
pvh_e->qlink.next = (queue_entry_t) pvh_eh;
pvh_eh = pvh_e;
int pai;
pmap_t pmap;
char attributes = 0;
-
+ boolean_t is_internal, is_reusable, is_altacct, is_ept;
+ int ept_bits_to_clear;
+ boolean_t ept_keep_global_mod = FALSE;
+
+ if ((bits & PHYS_MODIFIED) &&
+ (options & PMAP_OPTIONS_NOFLUSH) &&
+ arg == NULL) {
+ panic("phys_attribute_clear(0x%x,0x%x,0x%x,%p): "
+ "should not clear 'modified' without flushing TLBs\n",
+ pn, bits, options, arg);
+ }
+
+ /* We only support converting MOD and REF bits for EPT PTEs in this function */
+ assert((bits & ~(PHYS_REFERENCED | PHYS_MODIFIED)) == 0);
+
+ ept_bits_to_clear = (unsigned)physmap_refmod_to_ept(bits & (PHYS_MODIFIED | PHYS_REFERENCED));
+
pmap_intr_assert();
assert(pn != vm_page_fictitious_addr);
if (pn == vm_page_guard_addr)
LOCK_PVH(pai);
+
/*
* Walk down PV list, clearing all modify or reference bits.
* We do not have to lock the pv_list because we have
* There are some mappings.
*/
+ is_internal = IS_INTERNAL_PAGE(pai);
+ is_reusable = IS_REUSABLE_PAGE(pai);
+
pv_e = (pv_hashed_entry_t)pv_h;
do {
vm_map_offset_t va;
+ char pte_bits;
pmap = pv_e->pmap;
- va = pv_e->va;
+ is_ept = is_ept_pmap(pmap);
+ is_altacct = IS_ALTACCT_PAGE(pai, pv_e);
+ va = PVE_VA(pv_e);
+ pte_bits = 0;
+
+ if (bits) {
+ pte = pmap_pte(pmap, va);
+ /* grab ref/mod bits from this PTE */
+ pte_bits = (*pte & (PTE_REF(is_ept) | PTE_MOD(is_ept)));
+ /* propagate to page's global attributes */
+ if (!is_ept) {
+ attributes |= pte_bits;
+ } else {
+ attributes |= ept_refmod_to_physmap(pte_bits);
+ if (!pmap_ept_support_ad && (pte_bits & INTEL_EPT_MOD)) {
+ ept_keep_global_mod = TRUE;
+ }
+ }
+ /* which bits to clear for this PTE? */
+ if (!is_ept) {
+ pte_bits &= bits;
+ } else {
+ pte_bits &= ept_bits_to_clear;
+ }
+ }
/*
* Clear modify and/or reference bits.
*/
- pte = pmap_pte(pmap, va);
- attributes |= *pte & (PHYS_MODIFIED|PHYS_REFERENCED);
- pmap_update_pte(pte, bits, 0);
- /* Ensure all processors using this translation
- * invalidate this TLB entry. The invalidation *must*
- * follow the PTE update, to ensure that the TLB
- * shadow of the 'D' bit (in particular) is
- * synchronized with the updated PTE.
- */
- if (options & PMAP_OPTIONS_NOFLUSH) {
- if (arg)
- PMAP_UPDATE_TLBS_DELAYED(pmap, va, va + PAGE_SIZE, (pmap_flush_context *)arg);
- } else
- PMAP_UPDATE_TLBS(pmap, va, va + PAGE_SIZE);
+ if (pte_bits) {
+ pmap_update_pte(pte, bits, 0);
+
+ /* Ensure all processors using this translation
+ * invalidate this TLB entry. The invalidation
+ * *must* follow the PTE update, to ensure that
+ * the TLB shadow of the 'D' bit (in particular)
+ * is synchronized with the updated PTE.
+ */
+ if (! (options & PMAP_OPTIONS_NOFLUSH)) {
+ /* flush TLBS now */
+ PMAP_UPDATE_TLBS(pmap,
+ va,
+ va + PAGE_SIZE);
+ } else if (arg) {
+ /* delayed TLB flush: add "pmap" info */
+ PMAP_UPDATE_TLBS_DELAYED(
+ pmap,
+ va,
+ va + PAGE_SIZE,
+ (pmap_flush_context *)arg);
+ } else {
+ /* no TLB flushing at all */
+ }
+ }
+
+ /* update pmap "reusable" stats */
+ if ((options & PMAP_OPTIONS_CLEAR_REUSABLE) &&
+ is_reusable &&
+ pmap != kernel_pmap) {
+ /* one less "reusable" */
+ assert(pmap->stats.reusable > 0);
+ OSAddAtomic(-1, &pmap->stats.reusable);
+ if (is_internal) {
+ /* one more "internal" */
+ OSAddAtomic(+1, &pmap->stats.internal);
+ PMAP_STATS_PEAK(pmap->stats.internal);
+ assert(pmap->stats.internal > 0);
+ if (is_altacct) {
+ /* no impact on ledgers */
+ } else {
+ pmap_ledger_credit(pmap,
+ task_ledgers.internal,
+ PAGE_SIZE);
+ pmap_ledger_credit(
+ pmap,
+ task_ledgers.phys_footprint,
+ PAGE_SIZE);
+ }
+ } else {
+ /* one more "external" */
+ OSAddAtomic(+1, &pmap->stats.external);
+ PMAP_STATS_PEAK(pmap->stats.external);
+ assert(pmap->stats.external > 0);
+ }
+ } else if ((options & PMAP_OPTIONS_SET_REUSABLE) &&
+ !is_reusable &&
+ pmap != kernel_pmap) {
+ /* one more "reusable" */
+ OSAddAtomic(+1, &pmap->stats.reusable);
+ PMAP_STATS_PEAK(pmap->stats.reusable);
+ assert(pmap->stats.reusable > 0);
+ if (is_internal) {
+ /* one less "internal" */
+ assert(pmap->stats.internal > 0);
+ OSAddAtomic(-1, &pmap->stats.internal);
+ if (is_altacct) {
+ /* no impact on footprint */
+ } else {
+ pmap_ledger_debit(pmap,
+ task_ledgers.internal,
+ PAGE_SIZE);
+ pmap_ledger_debit(
+ pmap,
+ task_ledgers.phys_footprint,
+ PAGE_SIZE);
+ }
+ } else {
+ /* one less "external" */
+ assert(pmap->stats.external > 0);
+ OSAddAtomic(-1, &pmap->stats.external);
+ }
+ }
pv_e = (pv_hashed_entry_t)queue_next(&pv_e->qlink);
*/
pmap_phys_attributes[pai] |= attributes;
- pmap_phys_attributes[pai] &= (~bits);
+
+ if (ept_keep_global_mod) {
+ /*
+ * If the hardware doesn't support AD bits for EPT PTEs and someone is
+ * requesting that we clear the modified bit for a phys page, we need
+ * to ensure that there are no EPT mappings for the page with the
+ * modified bit set. If there are, we cannot clear the global modified bit.
+ */
+ bits &= ~PHYS_MODIFIED;
+ }
+ pmap_phys_attributes[pai] &= ~(bits);
+
+ /* update this page's "reusable" status */
+ if (options & PMAP_OPTIONS_CLEAR_REUSABLE) {
+ pmap_phys_attributes[pai] &= ~PHYS_REUSABLE;
+ } else if (options & PMAP_OPTIONS_SET_REUSABLE) {
+ pmap_phys_attributes[pai] |= PHYS_REUSABLE;
+ }
UNLOCK_PVH(pai);
int pai;
pmap_t pmap;
int attributes = 0;
+ boolean_t is_ept;
pmap_intr_assert();
assert(pn != vm_page_fictitious_addr);
+ assert((bits & ~(PHYS_MODIFIED | PHYS_REFERENCED)) == 0);
if (pn == vm_page_guard_addr)
return 0;
vm_map_offset_t va;
pmap = pv_e->pmap;
- va = pv_e->va;
+ is_ept = is_ept_pmap(pmap);
+ va = PVE_VA(pv_e);
/*
* pick up modify and/or reference bits from mapping
*/
pte = pmap_pte(pmap, va);
- attributes |= (int)(*pte & bits);
+ if (!is_ept) {
+ attributes |= (int)(*pte & bits);
+ } else {
+ attributes |= (int)(ept_refmod_to_physmap((*pte & (INTEL_EPT_REF | INTEL_EPT_MOD))) & (PHYS_MODIFIED | PHYS_REFERENCED));
+
+ }
pv_e = (pv_hashed_entry_t)queue_next(&pv_e->qlink);
PMAP_LOCK(map);
if ((pte = pmap_pte(map, vaddr)) == PT_ENTRY_NULL)
- panic("pmap_change_wiring: pte missing");
+ panic("pmap_change_wiring(%p,0x%llx,%d): pte missing",
+ map, vaddr, wired);
if (wired && !iswired(*pte)) {
/*
*/
pmap_ledger_credit(map, task_ledgers.wired_mem, PAGE_SIZE);
OSAddAtomic(+1, &map->stats.wired_count);
- pmap_update_pte(pte, 0, INTEL_PTE_WIRED);
+ pmap_update_pte(pte, 0, PTE_WIRED);
}
else if (!wired && iswired(*pte)) {
/*
assert(map->stats.wired_count >= 1);
OSAddAtomic(-1, &map->stats.wired_count);
pmap_ledger_debit(map, task_ledgers.wired_mem, PAGE_SIZE);
- pmap_update_pte(pte, INTEL_PTE_WIRED, 0);
+ pmap_update_pte(pte, PTE_WIRED, 0);
}
PMAP_UNLOCK(map);
return(virt);
}
-void
-pmap_reusable(
+mach_vm_size_t
+pmap_query_resident(
pmap_t pmap,
addr64_t s64,
addr64_t e64,
- boolean_t reusable)
+ mach_vm_size_t *compressed_bytes_p)
{
pt_entry_t *pde;
pt_entry_t *spte, *epte;
addr64_t l64;
uint64_t deadline;
+ mach_vm_size_t resident_bytes;
+ mach_vm_size_t compressed_bytes;
+ boolean_t is_ept;
pmap_intr_assert();
- if (pmap == PMAP_NULL || pmap == kernel_pmap || s64 == e64)
- return;
+ if (pmap == PMAP_NULL || pmap == kernel_pmap || s64 == e64) {
+ if (compressed_bytes_p) {
+ *compressed_bytes_p = 0;
+ }
+ return 0;
+ }
- PMAP_TRACE(PMAP_CODE(PMAP__REUSABLE) | DBG_FUNC_START,
+ is_ept = is_ept_pmap(pmap);
+
+ PMAP_TRACE(PMAP_CODE(PMAP__QUERY_RESIDENT) | DBG_FUNC_START,
pmap,
(uint32_t) (s64 >> 32), s64,
(uint32_t) (e64 >> 32), e64);
+ resident_bytes = 0;
+ compressed_bytes = 0;
+
PMAP_LOCK(pmap);
deadline = rdtsc64() + max_preemption_latency_tsc;
l64 = e64;
pde = pmap_pde(pmap, s64);
- if (pde && (*pde & INTEL_PTE_VALID)) {
- if (*pde & INTEL_PTE_PS) {
+ if (pde && (*pde & PTE_VALID_MASK(is_ept))) {
+ if (*pde & PTE_PS) {
/* superpage: not supported */
} else {
spte = pmap_pte(pmap,
(s64 & ~(pde_mapped_size - 1)));
spte = &spte[ptenum(s64)];
epte = &spte[intel_btop(l64 - s64)];
- pmap_reusable_range(pmap, s64, spte, epte,
- reusable);
+
+ for (; spte < epte; spte++) {
+ if (pte_to_pa(*spte) != 0) {
+ resident_bytes += PAGE_SIZE;
+ } else if (*spte & PTE_COMPRESSED) {
+ compressed_bytes += PAGE_SIZE;
+ }
+ }
+
}
}
s64 = l64;
PMAP_UNLOCK(pmap);
- PMAP_TRACE(PMAP_CODE(PMAP__REUSABLE) | DBG_FUNC_END,
- pmap, reusable, 0, 0, 0);
-}
-
-void
-pmap_reusable_range(
- pmap_t pmap,
- vm_map_offset_t start_vaddr,
- pt_entry_t *spte,
- pt_entry_t *epte,
- boolean_t reusable)
-{
- pt_entry_t *cpte;
- int num_external, num_internal, num_reusable;
- ppnum_t pai;
- pmap_paddr_t pa;
- vm_map_offset_t vaddr;
-
- num_external = 0;
- num_internal = 0;
- num_reusable = 0;
-
- for (cpte = spte, vaddr = start_vaddr;
- cpte < epte;
- cpte++, vaddr += PAGE_SIZE_64) {
-
- pa = pte_to_pa(*cpte);
- if (pa == 0)
- continue;
-
- pai = pa_index(pa);
-
- LOCK_PVH(pai);
-
- pa = pte_to_pa(*cpte);
- if (pa == 0) {
- UNLOCK_PVH(pai);
- continue;
- }
- if (reusable) {
- /* we want to set "reusable" */
- if (IS_REUSABLE_PAGE(pai)) {
- /* already reusable: no change */
- } else {
- pmap_phys_attributes[pai] |= PHYS_REUSABLE;
- /* one more "reusable" */
- num_reusable++;
- if (IS_INTERNAL_PAGE(pai)) {
- /* one less "internal" */
- num_internal--;
- } else {
- /* one less "external" */
- num_external--;
- }
- }
- } else {
- /* we want to clear "reusable" */
- if (IS_REUSABLE_PAGE(pai)) {
- pmap_phys_attributes[pai] &= ~PHYS_REUSABLE;
- /* one less "reusable" */
- num_reusable--;
- if (IS_INTERNAL_PAGE(pai)) {
- /* one more "internal" */
- num_internal++;
- } else {
- /* one more "external" */
- num_external++;
- }
- } else {
- /* already not reusable: no change */
- }
- }
-
- UNLOCK_PVH(pai);
-
- } /* for loop */
+ PMAP_TRACE(PMAP_CODE(PMAP__QUERY_RESIDENT) | DBG_FUNC_END,
+ pmap, 0, 0, 0, 0);
- /*
- * Update the counts
- */
- if (pmap != kernel_pmap) {
- if (num_external) {
- OSAddAtomic(num_external, &pmap->stats.external);
- PMAP_STATS_PEAK(pmap->stats.external);
- }
- assert(pmap->stats.external >= 0);
- if (num_internal) {
- OSAddAtomic(num_internal, &pmap->stats.internal);
- PMAP_STATS_PEAK(pmap->stats.internal);
- }
- assert(pmap->stats.internal >= 0);
- if (num_reusable) {
- OSAddAtomic(num_reusable, &pmap->stats.reusable);
- PMAP_STATS_PEAK(pmap->stats.reusable);
- }
- assert(pmap->stats.reusable >= 0);
+ if (compressed_bytes_p) {
+ *compressed_bytes_p = compressed_bytes;
}
-
- return;
+ return resident_bytes;
}
-unsigned int
-pmap_query_resident(
+kern_return_t
+pmap_query_page_info(
pmap_t pmap,
- addr64_t s64,
- addr64_t e64)
+ vm_map_offset_t va,
+ int *disp_p)
{
- pt_entry_t *pde;
- pt_entry_t *spte, *epte;
- addr64_t l64;
- uint64_t deadline;
- unsigned int result;
+ int disp;
+ boolean_t is_ept;
+ pmap_paddr_t pa;
+ ppnum_t pai;
+ pd_entry_t *pde;
+ pt_entry_t *pte;
pmap_intr_assert();
+ if (pmap == PMAP_NULL || pmap == kernel_pmap) {
+ *disp_p = 0;
+ return KERN_INVALID_ARGUMENT;
+ }
- if (pmap == PMAP_NULL || pmap == kernel_pmap || s64 == e64)
- return 0;
-
- PMAP_TRACE(PMAP_CODE(PMAP__QUERY_RESIDENT) | DBG_FUNC_START,
- pmap,
- (uint32_t) (s64 >> 32), s64,
- (uint32_t) (e64 >> 32), e64);
-
- result = 0;
+ disp = 0;
+ is_ept = is_ept_pmap(pmap);
PMAP_LOCK(pmap);
- deadline = rdtsc64() + max_preemption_latency_tsc;
-
- while (s64 < e64) {
- l64 = (s64 + pde_mapped_size) & ~(pde_mapped_size - 1);
- if (l64 > e64)
- l64 = e64;
- pde = pmap_pde(pmap, s64);
-
- if (pde && (*pde & INTEL_PTE_VALID)) {
- if (*pde & INTEL_PTE_PS) {
- /* superpage: not supported */
- } else {
- spte = pmap_pte(pmap,
- (s64 & ~(pde_mapped_size - 1)));
- spte = &spte[ptenum(s64)];
- epte = &spte[intel_btop(l64 - s64)];
+ pde = pmap_pde(pmap, va);
+ if (!pde ||
+ !(*pde & PTE_VALID_MASK(is_ept)) ||
+ (*pde & PTE_PS)) {
+ goto done;
+ }
- for (; spte < epte; spte++) {
- if (pte_to_pa(*spte) != 0) {
- result++;
- }
- }
+ pte = pmap_pte(pmap, va);
+ if (pte == PT_ENTRY_NULL) {
+ goto done;
+ }
+ pa = pte_to_pa(*pte);
+ if (pa == 0) {
+ if (PTE_IS_COMPRESSED(*pte)) {
+ disp |= PMAP_QUERY_PAGE_COMPRESSED;
+ if (*pte & PTE_COMPRESSED_ALT) {
+ disp |= PMAP_QUERY_PAGE_COMPRESSED_ALTACCT;
}
}
- s64 = l64;
-
- if (s64 < e64 && rdtsc64() >= deadline) {
- PMAP_UNLOCK(pmap);
- PMAP_LOCK(pmap);
- deadline = rdtsc64() + max_preemption_latency_tsc;
+ } else {
+ disp |= PMAP_QUERY_PAGE_PRESENT;
+ pai = pa_index(pa);
+ if (!IS_MANAGED_PAGE(pai)) {
+ } else if (pmap_pv_is_altacct(pmap, va, pai)) {
+ assert(IS_INTERNAL_PAGE(pai));
+ disp |= PMAP_QUERY_PAGE_INTERNAL;
+ disp |= PMAP_QUERY_PAGE_ALTACCT;
+ } else if (IS_REUSABLE_PAGE(pai)) {
+ disp |= PMAP_QUERY_PAGE_REUSABLE;
+ } else if (IS_INTERNAL_PAGE(pai)) {
+ disp |= PMAP_QUERY_PAGE_INTERNAL;
}
}
+done:
PMAP_UNLOCK(pmap);
+ *disp_p = disp;
+ return KERN_SUCCESS;
+}
- PMAP_TRACE(PMAP_CODE(PMAP__QUERY_RESIDENT) | DBG_FUNC_END,
- pmap, 0, 0, 0, 0);
+#if DEBUG || DEVELOPMENT
+void
+kernel_pmap_lock(void)
+{
+ PMAP_LOCK(kernel_pmap);
+}
- return result;
+void
+kernel_pmap_unlock(void)
+{
+ PMAP_UNLOCK(kernel_pmap);
}
+#endif /* DEBUG || DEVELOPMENT */
projects / apple / xnu.git / blobdiff