* Copyright (c) 1991 Regents of the University of California.
* Copyright (c) 1994 John S. Dyson
* Copyright (c) 1994 David Greenman
- * Copyright (c) 2008 The DragonFly Project.
- * Copyright (c) 2008 Jordan Gordeev.
+ * Copyright (c) 2003 Peter Wemm
+ * Copyright (c) 2005-2008 Alan L. Cox <alc@cs.rice.edu>
+ * Copyright (c) 2008, 2009 The DragonFly Project.
+ * Copyright (c) 2008, 2009 Jordan Gordeev.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
#include <machine/pmap.h>
#include <machine/pmap_inval.h>
+#include <ddb/ddb.h>
+
#define PMAP_KEEP_PDIRS
#ifndef PMAP_SHPGPERPROC
#define PMAP_SHPGPERPROC 200
#define PMAP_INLINE
#endif
+/* JGPMAP32 */
+#define PTDPTDI 0
+
+#define READY0
+#define READY1
+#define READY2
+#define READY3
+#define READY4
+#define READY5
+
/*
* Get PDEs and PTEs for user/kernel address space
*/
+#if JGPMAP32
#define pmap_pde(m, v) (&((m)->pm_pdir[(vm_offset_t)(v) >> PDRSHIFT]))
+#endif
+static pd_entry_t *pmap_pde(pmap_t pmap, vm_offset_t va);
#define pdir_pde(m, v) (m[(vm_offset_t)(v) >> PDRSHIFT])
#define pmap_pde_v(pte) ((*(pd_entry_t *)pte & PG_V) != 0)
static vm_object_t kptobj;
+static int ndmpdp;
+static vm_paddr_t dmaplimit;
static int nkpt;
vm_offset_t kernel_vm_end;
+static uint64_t KPDphys; /* phys addr of kernel level 2 */
+uint64_t KPDPphys; /* phys addr of kernel level 3 */
+uint64_t KPML4phys; /* phys addr of kernel level 4 */
+
+static uint64_t DMPDphys; /* phys addr of direct mapped level 2 */
+static uint64_t DMPDPphys; /* phys addr of direct mapped level 3 */
+
/*
* Data for the pv entry allocation mechanism
*/
#define DISABLE_PSE
static PMAP_INLINE void free_pv_entry (pv_entry_t pv);
-static pt_entry_t * get_ptbase (pmap_t pmap);
static pv_entry_t get_pv_entry (void);
static void i386_protection_init (void);
static __inline void pmap_clearbit (vm_page_t m, int bit);
static vm_page_t _pmap_allocpte (pmap_t pmap, vm_pindex_t ptepindex);
static pt_entry_t * pmap_pte_quick (pmap_t pmap, vm_offset_t va);
static vm_page_t pmap_page_lookup (vm_object_t object, vm_pindex_t pindex);
+static int pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m,
+ pmap_inval_info_t info);
static int pmap_unuse_pt (pmap_t, vm_offset_t, vm_page_t, pmap_inval_info_t);
static vm_offset_t pmap_kmem_choose(vm_offset_t addr);
*/
static vm_offset_t
pmap_kmem_choose(vm_offset_t addr)
+READY0
{
vm_offset_t newaddr = addr;
#ifndef DISABLE_PSE
}
/*
- * pmap_pte:
- *
- * Extract the page table entry associated with the given map/virtual
- * pair.
- *
- * This function may NOT be called from an interrupt.
- */
-PMAP_INLINE pt_entry_t *
-pmap_pte(pmap_t pmap, vm_offset_t va)
-{
- pd_entry_t *pdeaddr;
-
- if (pmap) {
- pdeaddr = pmap_pde(pmap, va);
- if (*pdeaddr & PG_PS)
- return pdeaddr;
- if (*pdeaddr) {
- return get_ptbase(pmap) + amd64_btop(va);
- }
- }
- return (0);
-}
-
-/*
* pmap_pte_quick:
*
* Super fast pmap_pte routine best used when scanning the pv lists.
*
* Should only be called while in a critical section.
*/
+static __inline pt_entry_t *pmap_pte(pmap_t pmap, vm_offset_t va);
+
static pt_entry_t *
pmap_pte_quick(pmap_t pmap, vm_offset_t va)
+READY0
{
- struct mdglobaldata *gd = mdcpu;
- pd_entry_t pde, newpf;
-
- if ((pde = pmap->pm_pdir[va >> PDRSHIFT]) != 0) {
- pd_entry_t frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME;
- vm_pindex_t index = amd64_btop(va);
- /* are we current address space or kernel? */
- if ((pmap == &kernel_pmap) ||
- (frame == (PTDpde & PG_FRAME))) {
- return (pt_entry_t *) PTmap + index;
- }
- newpf = pde & PG_FRAME;
- if ( ((* (pt_entry_t *) gd->gd_PMAP1) & PG_FRAME) != newpf) {
- * (pt_entry_t *) gd->gd_PMAP1 = newpf | PG_RW | PG_V;
- cpu_invlpg(gd->gd_PADDR1);
- }
- return gd->gd_PADDR1 + (index & (NPTEPG - 1));
- }
- return (0);
+ return pmap_pte(pmap, va);
+}
+
+/* Return a non-clipped PD index for a given VA */
+static __inline vm_pindex_t
+pmap_pde_pindex(vm_offset_t va)
+READY1
+{
+ return va >> PDRSHIFT;
+}
+
+/* Return various clipped indexes for a given VA */
+static __inline vm_pindex_t
+pmap_pte_index(vm_offset_t va)
+READY1
+{
+
+ return ((va >> PAGE_SHIFT) & ((1ul << NPTEPGSHIFT) - 1));
+}
+
+static __inline vm_pindex_t
+pmap_pde_index(vm_offset_t va)
+READY1
+{
+
+ return ((va >> PDRSHIFT) & ((1ul << NPDEPGSHIFT) - 1));
+}
+
+static __inline vm_pindex_t
+pmap_pdpe_index(vm_offset_t va)
+READY1
+{
+
+ return ((va >> PDPSHIFT) & ((1ul << NPDPEPGSHIFT) - 1));
+}
+
+static __inline vm_pindex_t
+pmap_pml4e_index(vm_offset_t va)
+READY1
+{
+
+ return ((va >> PML4SHIFT) & ((1ul << NPML4EPGSHIFT) - 1));
+}
+
+/* Return a pointer to the PML4 slot that corresponds to a VA */
+static __inline pml4_entry_t *
+pmap_pml4e(pmap_t pmap, vm_offset_t va)
+READY1
+{
+
+ return (&pmap->pm_pml4[pmap_pml4e_index(va)]);
+}
+
+/* Return a pointer to the PDP slot that corresponds to a VA */
+static __inline pdp_entry_t *
+pmap_pml4e_to_pdpe(pml4_entry_t *pml4e, vm_offset_t va)
+READY1
+{
+ pdp_entry_t *pdpe;
+
+ pdpe = (pdp_entry_t *)PHYS_TO_DMAP(*pml4e & PG_FRAME);
+ return (&pdpe[pmap_pdpe_index(va)]);
+}
+
+/* Return a pointer to the PDP slot that corresponds to a VA */
+static __inline pdp_entry_t *
+pmap_pdpe(pmap_t pmap, vm_offset_t va)
+READY1
+{
+ pml4_entry_t *pml4e;
+
+ pml4e = pmap_pml4e(pmap, va);
+ if ((*pml4e & PG_V) == 0)
+ return NULL;
+ return (pmap_pml4e_to_pdpe(pml4e, va));
+}
+
+/* Return a pointer to the PD slot that corresponds to a VA */
+static __inline pd_entry_t *
+pmap_pdpe_to_pde(pdp_entry_t *pdpe, vm_offset_t va)
+READY1
+{
+ pd_entry_t *pde;
+
+ pde = (pd_entry_t *)PHYS_TO_DMAP(*pdpe & PG_FRAME);
+ return (&pde[pmap_pde_index(va)]);
+}
+
+/* Return a pointer to the PD slot that corresponds to a VA */
+static __inline pd_entry_t *
+pmap_pde(pmap_t pmap, vm_offset_t va)
+READY1
+{
+ pdp_entry_t *pdpe;
+
+ pdpe = pmap_pdpe(pmap, va);
+ if (pdpe == NULL || (*pdpe & PG_V) == 0)
+ return NULL;
+ return (pmap_pdpe_to_pde(pdpe, va));
+}
+
+/* Return a pointer to the PT slot that corresponds to a VA */
+static __inline pt_entry_t *
+pmap_pde_to_pte(pd_entry_t *pde, vm_offset_t va)
+READY1
+{
+ pt_entry_t *pte;
+
+ pte = (pt_entry_t *)PHYS_TO_DMAP(*pde & PG_FRAME);
+ return (&pte[pmap_pte_index(va)]);
+}
+
+/* Return a pointer to the PT slot that corresponds to a VA */
+static __inline pt_entry_t *
+pmap_pte(pmap_t pmap, vm_offset_t va)
+READY1
+{
+ pd_entry_t *pde;
+
+ pde = pmap_pde(pmap, va);
+ if (pde == NULL || (*pde & PG_V) == 0)
+ return NULL;
+ if ((*pde & PG_PS) != 0) /* compat with i386 pmap_pte() */
+ return ((pt_entry_t *)pde);
+ return (pmap_pde_to_pte(pde, va));
+}
+
+
+PMAP_INLINE pt_entry_t *
+vtopte(vm_offset_t va)
+READY1
+{
+ uint64_t mask = ((1ul << (NPTEPGSHIFT + NPDEPGSHIFT + NPDPEPGSHIFT + NPML4EPGSHIFT)) - 1);
+
+ return (PTmap + ((va >> PAGE_SHIFT) & mask));
}
+static __inline pd_entry_t *
+vtopde(vm_offset_t va)
+READY1
+{
+ uint64_t mask = ((1ul << (NPDEPGSHIFT + NPDPEPGSHIFT + NPML4EPGSHIFT)) - 1);
+
+ return (PDmap + ((va >> PDRSHIFT) & mask));
+}
-static u_int64_t
+static uint64_t
allocpages(vm_paddr_t *firstaddr, int n)
+READY1
{
- u_int64_t ret;
+ uint64_t ret;
ret = *firstaddr;
bzero((void *)ret, n * PAGE_SIZE);
void
create_pagetables(vm_paddr_t *firstaddr)
+READY0
{
int i;
int count;
/* we are running (mostly) V=P at this point */
+ /* Allocate pages */
+ KPTphys = allocpages(firstaddr, NKPT);
+ KPML4phys = allocpages(firstaddr, 1);
+ KPDPphys = allocpages(firstaddr, NKPML4E);
+ KPDphys = allocpages(firstaddr, NKPDPE);
+
+ ndmpdp = (ptoa(Maxmem) + NBPDP - 1) >> PDPSHIFT;
+ if (ndmpdp < 4) /* Minimum 4GB of dirmap */
+ ndmpdp = 4;
+ DMPDPphys = allocpages(firstaddr, NDMPML4E);
+ if ((amd_feature & AMDID_PAGE1GB) == 0)
+ DMPDphys = allocpages(firstaddr, ndmpdp);
+ dmaplimit = (vm_paddr_t)ndmpdp << PDPSHIFT;
+
+ /* Fill in the underlying page table pages */
+ /* Read-only from zero to physfree */
+ /* XXX not fully used, underneath 2M pages */
+ for (i = 0; (i << PAGE_SHIFT) < *firstaddr; i++) {
+ ((pt_entry_t *)KPTphys)[i] = i << PAGE_SHIFT;
+ ((pt_entry_t *)KPTphys)[i] |= PG_RW | PG_V | PG_G;
+ }
+
+ /* Now map the page tables at their location within PTmap */
+ for (i = 0; i < NKPT; i++) {
+ ((pd_entry_t *)KPDphys)[i] = KPTphys + (i << PAGE_SHIFT);
+ ((pd_entry_t *)KPDphys)[i] |= PG_RW | PG_V;
+ }
+
+ /* Map from zero to end of allocations under 2M pages */
+ /* This replaces some of the KPTphys entries above */
+ for (i = 0; (i << PDRSHIFT) < *firstaddr; i++) {
+ ((pd_entry_t *)KPDphys)[i] = i << PDRSHIFT;
+ ((pd_entry_t *)KPDphys)[i] |= PG_RW | PG_V | PG_PS | PG_G;
+ }
+
+ /* And connect up the PD to the PDP */
+ for (i = 0; i < NKPDPE; i++) {
+ ((pdp_entry_t *)KPDPphys)[i + KPDPI] = KPDphys +
+ (i << PAGE_SHIFT);
+ ((pdp_entry_t *)KPDPphys)[i + KPDPI] |= PG_RW | PG_V | PG_U;
+ }
+
+ /* Now set up the direct map space using either 2MB or 1GB pages */
+ /* Preset PG_M and PG_A because demotion expects it */
+ if ((amd_feature & AMDID_PAGE1GB) == 0) {
+ for (i = 0; i < NPDEPG * ndmpdp; i++) {
+ ((pd_entry_t *)DMPDphys)[i] = (vm_paddr_t)i << PDRSHIFT;
+ ((pd_entry_t *)DMPDphys)[i] |= PG_RW | PG_V | PG_PS |
+ PG_G | PG_M | PG_A;
+ }
+ /* And the direct map space's PDP */
+ for (i = 0; i < ndmpdp; i++) {
+ ((pdp_entry_t *)DMPDPphys)[i] = DMPDphys +
+ (i << PAGE_SHIFT);
+ ((pdp_entry_t *)DMPDPphys)[i] |= PG_RW | PG_V | PG_U;
+ }
+ } else {
+ for (i = 0; i < ndmpdp; i++) {
+ ((pdp_entry_t *)DMPDPphys)[i] =
+ (vm_paddr_t)i << PDPSHIFT;
+ ((pdp_entry_t *)DMPDPphys)[i] |= PG_RW | PG_V | PG_PS |
+ PG_G | PG_M | PG_A;
+ }
+ }
+
+ /* And recursively map PML4 to itself in order to get PTmap */
+ ((pdp_entry_t *)KPML4phys)[PML4PML4I] = KPML4phys;
+ ((pdp_entry_t *)KPML4phys)[PML4PML4I] |= PG_RW | PG_V | PG_U;
+
+ /* Connect the Direct Map slot up to the PML4 */
+ ((pdp_entry_t *)KPML4phys)[DMPML4I] = DMPDPphys;
+ ((pdp_entry_t *)KPML4phys)[DMPML4I] |= PG_RW | PG_V | PG_U;
+
+ /* Connect the KVA slot up to the PML4 */
+ ((pdp_entry_t *)KPML4phys)[KPML4I] = KPDPphys;
+ ((pdp_entry_t *)KPML4phys)[KPML4I] |= PG_RW | PG_V | PG_U;
+#if JGPMAP32
common_lvl4_phys = allocpages(firstaddr, 1); /* 512 512G mappings */
common_lvl3_phys = allocpages(firstaddr, 1); /* 512 1G mappings */
KPTphys = allocpages(firstaddr, NKPT); /* kernel page table */
* Matt: location of user page directory entry (representing 1G)
*/
link_pdpe = &((pdp_entry_t *)common_lvl3_phys)[LINKPDPI];
+#endif /* JGPMAP32 */
}
+READY0
void
init_paging(vm_paddr_t *firstaddr) {
create_pagetables(firstaddr);
+#if JGPMAP32
/* switch to the newly created page table */
*link_pdpe = IdlePTD | PG_RW | PG_V | PG_U;
load_cr3(common_lvl4_phys);
KvaStart = (vm_offset_t)VADDR(PTDPTDI, 0);
KvaEnd = (vm_offset_t)VADDR(APTDPTDI, 0);
KvaSize = KvaEnd - KvaStart;
+#endif
}
/*
* (physical) address starting relative to 0]
*/
void
-pmap_bootstrap(vm_paddr_t *firstaddr, vm_paddr_t loadaddr)
+pmap_bootstrap(vm_paddr_t *firstaddr)
+READY0
{
vm_offset_t va;
pt_entry_t *pte;
int i;
int pg;
+ KvaStart = VM_MIN_KERNEL_ADDRESS;
+ KvaEnd = VM_MAX_KERNEL_ADDRESS;
+ KvaSize = KvaEnd - KvaStart;
+
avail_start = *firstaddr;
/*
- * XXX The calculation of virtual_start is wrong. It's NKPT*PAGE_SIZE
- * too large. It should instead be correctly calculated in locore.s and
- * not based on 'first' (which is a physical address, not a virtual
- * address, for the start of unused physical memory). The kernel
- * page tables are NOT double mapped and thus should not be included
- * in this calculation.
+ * Create an initial set of page tables to run the kernel in.
*/
+ create_pagetables(firstaddr);
+
virtual_start = (vm_offset_t) PTOV_OFFSET + *firstaddr;
virtual_start = pmap_kmem_choose(virtual_start);
- virtual_end = VADDR(KPTDI+NKPDE-1, NPTEPG-1);
+
+ virtual_end = VM_MAX_KERNEL_ADDRESS;
+
+ /* XXX do %cr0 as well */
+ load_cr4(rcr4() | CR4_PGE | CR4_PSE);
+ load_cr3(KPML4phys);
/*
* Initialize protection array.
* pmap_create, which is unlikely to work correctly at this part of
* the boot sequence (XXX and which no longer exists).
*/
+#if JGPMAP32
kernel_pmap.pm_pdir = (pd_entry_t *)(PTOV_OFFSET + (uint64_t)IdlePTD);
+#endif
+ kernel_pmap.pm_pml4 = (pdp_entry_t *) (PTOV_OFFSET + KPML4phys);
kernel_pmap.pm_count = 1;
kernel_pmap.pm_active = (cpumask_t)-1; /* don't allow deactivation */
TAILQ_INIT(&kernel_pmap.pm_pvlist);
v = (c)va; va += ((n)*PAGE_SIZE); p = pte; pte += (n);
va = virtual_start;
+#ifdef JG
pte = (pt_entry_t *) pmap_pte(&kernel_pmap, va);
+#else
+ pte = vtopte(va);
+#endif
/*
* CMAP1/CMAP2 are used for zeroing and copying pages.
virtual_start = va;
*CMAP1 = 0;
+#if JGPMAP32
for (i = 0; i < NKPT; i++)
PTD[i] = 0;
+#endif
/*
* PG_G is terribly broken on SMP because we IPI invltlb's in some
* PSE will be enabled as soon as all APs are up.
*/
PTD[KPTDI] = (pd_entry_t)ptditmp;
+#if JGPMAP32
kernel_pmap.pm_pdir[KPTDI] = (pd_entry_t)ptditmp;
+#endif
cpu_invltlb();
#endif
}
*/
void
pmap_set_opt(void)
+READY0
{
if (pseflag && (cpu_feature & CPUID_PSE)) {
load_cr4(rcr4() | CR4_PSE);
if (pdir4mb && mycpu->gd_cpuid == 0) { /* only on BSP */
+#if JGPMAP32
kernel_pmap.pm_pdir[KPTDI] =
PTD[KPTDI] = (pd_entry_t)pdir4mb;
+#endif
cpu_invltlb();
}
}
*/
void
pmap_init(void)
+READY0
{
int i;
int initial_pvs;
/*
* object for kernel page table pages
*/
- kptobj = vm_object_allocate(OBJT_DEFAULT, NKPDE);
+ /* JG I think the number can be arbitrary */
+ kptobj = vm_object_allocate(OBJT_DEFAULT, 5);
/*
* Allocate memory for random pmap data structures. Includes the
*/
void
pmap_init2(void)
+READY0
{
int shpgperproc = PMAP_SHPGPERPROC;
* This should be an invalid condition.
*/
static int
-pmap_nw_modified(pt_entry_t ptea)
+pmap_nw_modified(pt_entry_t pte)
+READY1
{
- int pte;
-
- pte = (int) ptea;
-
if ((pte & (PG_M|PG_RW)) == PG_M)
return 1;
else
*/
static PMAP_INLINE int
pmap_track_modified(vm_offset_t va)
+READY0
{
if ((va < clean_sva) || (va >= clean_eva))
return 1;
return 0;
}
-static pt_entry_t *
-get_ptbase(pmap_t pmap)
-{
- pd_entry_t frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME;
- struct globaldata *gd = mycpu;
-
- /* are we current address space or kernel? */
- if (pmap == &kernel_pmap || frame == (PTDpde & PG_FRAME)) {
- return (pt_entry_t *) PTmap;
- }
-
- /* otherwise, we are alternate address space */
- KKASSERT(gd->gd_intr_nesting_level == 0 &&
- (gd->gd_curthread->td_flags & TDF_INTTHREAD) == 0);
-
- if (frame != (((pd_entry_t) APTDpde) & PG_FRAME)) {
- APTDpde = (pd_entry_t)(frame | PG_RW | PG_V);
- /* The page directory is not shared between CPUs */
- cpu_invltlb();
- }
- return (pt_entry_t *) APTmap;
-}
-
/*
* pmap_extract:
*
*/
vm_paddr_t
pmap_extract(pmap_t pmap, vm_offset_t va)
+READY1
{
- vm_offset_t rtval;
- vm_offset_t pdirindex;
+ vm_paddr_t rtval;
+ pt_entry_t *pte;
+ pd_entry_t pde, *pdep;
- pdirindex = va >> PDRSHIFT;
- if (pmap && (rtval = pmap->pm_pdir[pdirindex])) {
- pt_entry_t *pte;
- if ((rtval & PG_PS) != 0) {
- rtval &= ~(NBPDR - 1);
- rtval |= va & (NBPDR - 1);
- return rtval;
+ rtval = 0;
+ pdep = pmap_pde(pmap, va);
+ if (pdep != NULL) {
+ pde = *pdep;
+ if (pde) {
+ if ((pde & PG_PS) != 0) {
+ rtval = (pde & PG_PS_FRAME) | (va & PDRMASK);
+ } else {
+ pte = pmap_pde_to_pte(pdep, va);
+ rtval = (*pte & PG_FRAME) | (va & PAGE_MASK);
+ }
}
- pte = get_ptbase(pmap) + amd64_btop(va);
- rtval = ((*pte & PG_FRAME) | (va & PAGE_MASK));
- return rtval;
}
- return 0;
+ return rtval;
+}
+
+/*
+ * Routine: pmap_kextract
+ * Function:
+ * Extract the physical page address associated
+ * kernel virtual address.
+ */
+vm_paddr_t
+pmap_kextract(vm_offset_t va)
+READY1
+{
+ pd_entry_t pde;
+ vm_paddr_t pa;
+
+ if (va >= DMAP_MIN_ADDRESS && va < DMAP_MAX_ADDRESS) {
+ pa = DMAP_TO_PHYS(va);
+ } else {
+ pde = *vtopde(va);
+ if (pde & PG_PS) {
+ pa = (pde & PG_PS_FRAME) | (va & PDRMASK);
+ } else {
+ /*
+ * Beware of a concurrent promotion that changes the
+ * PDE at this point! For example, vtopte() must not
+ * be used to access the PTE because it would use the
+ * new PDE. It is, however, safe to use the old PDE
+ * because the page table page is preserved by the
+ * promotion.
+ */
+ pa = *pmap_pde_to_pte(&pde, va);
+ pa = (pa & PG_FRAME) | (va & PAGE_MASK);
+ }
+ }
+ return pa;
}
/***************************************************
*/
void
pmap_kenter(vm_offset_t va, vm_paddr_t pa)
+READY1
{
pt_entry_t *pte;
pt_entry_t npte;
*/
void
pmap_kenter_quick(vm_offset_t va, vm_paddr_t pa)
+READY1
{
pt_entry_t *pte;
pt_entry_t npte;
void
pmap_kenter_sync(vm_offset_t va)
+READY1
{
pmap_inval_info info;
void
pmap_kenter_sync_quick(vm_offset_t va)
+READY1
{
cpu_invlpg((void *)va);
}
*/
void
pmap_kremove(vm_offset_t va)
+READY1
{
pt_entry_t *pte;
pmap_inval_info info;
void
pmap_kremove_quick(vm_offset_t va)
+READY1
{
pt_entry_t *pte;
pte = vtopte(va);
*/
void
pmap_kmodify_rw(vm_offset_t va)
+READY1
{
*vtopte(va) |= PG_RW;
cpu_invlpg((void *)va);
void
pmap_kmodify_nc(vm_offset_t va)
+READY1
{
*vtopte(va) |= PG_N;
cpu_invlpg((void *)va);
*/
vm_offset_t
pmap_map(vm_offset_t virt, vm_paddr_t start, vm_paddr_t end, int prot)
+READY1
{
+ /*
+ * JG Are callers prepared to get an address in the DMAP,
+ * instead of the passed-in virt?
+ */
while (start < end) {
pmap_kenter(virt, start);
virt += PAGE_SIZE;
*/
void
pmap_qenter(vm_offset_t va, vm_page_t *m, int count)
+READY1
{
vm_offset_t end_va;
void
pmap_qenter2(vm_offset_t va, vm_page_t *m, int count, cpumask_t *mask)
+READY1
{
vm_offset_t end_va;
cpumask_t cmask = mycpu->gd_cpumask;
*/
void
pmap_qremove(vm_offset_t va, int count)
+READY1
{
vm_offset_t end_va;
- end_va = va + count*PAGE_SIZE;
+ end_va = va + count * PAGE_SIZE;
while (va < end_va) {
pt_entry_t *pte;
*/
static vm_page_t
pmap_page_lookup(vm_object_t object, vm_pindex_t pindex)
+READY1
{
vm_page_t m;
*/
void
pmap_init_thread(thread_t td)
+READY1
{
/* enforce pcb placement */
td->td_pcb = (struct pcb *)(td->td_kstack + td->td_kstack_size) - 1;
td->td_savefpu = &td->td_pcb->pcb_save;
- td->td_sp = (char *)td->td_pcb - 16;
+ td->td_sp = (char *)td->td_pcb - 16; /* JG is -16 needed on amd64? */
}
/*
*/
void
pmap_init_proc(struct proc *p)
+READY1
{
}
*/
void
pmap_dispose_proc(struct proc *p)
+READY1
{
KASSERT(p->p_lock == 0, ("attempt to dispose referenced proc! %p", p));
}
* drops to zero, then it decrements the wire count.
*/
static int
-_pmap_unwire_pte_hold(pmap_t pmap, vm_page_t m, pmap_inval_info_t info)
+_pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m, pmap_inval_info_t info)
+READY1
{
/*
* Wait until we can busy the page ourselves. We cannot have
*/
vm_page_busy(m);
pmap_inval_add(info, pmap, -1);
- pmap->pm_pdir[m->pindex] = 0;
+
+ if (m->pindex >= (NUPDE + NUPDPE)) {
+ /* PDP page */
+ pml4_entry_t *pml4;
+ pml4 = pmap_pml4e(pmap, va);
+ *pml4 = 0;
+ } else if (m->pindex >= NUPDE) {
+ /* PD page */
+ pdp_entry_t *pdp;
+ pdp = pmap_pdpe(pmap, va);
+ *pdp = 0;
+ } else {
+ /* PTE page */
+ pd_entry_t *pd;
+ pd = pmap_pde(pmap, va);
+ *pd = 0;
+ }
KKASSERT(pmap->pm_stats.resident_count > 0);
--pmap->pm_stats.resident_count;
if (pmap->pm_ptphint == m)
pmap->pm_ptphint = NULL;
+#if JG
+ if (m->pindex < NUPDE) {
+ /* We just released a PT, unhold the matching PD */
+ vm_page_t pdpg;
+
+ pdpg = PHYS_TO_VM_PAGE(*pmap_pdpe(pmap, va) & PG_FRAME);
+ pmap_unwire_pte_hold(pmap, va, pdpg, info);
+ }
+ if (m->pindex >= NUPDE && m->pindex < (NUPDE + NUPDPE)) {
+ /* We just released a PD, unhold the matching PDP */
+ vm_page_t pdppg;
+
+ pdppg = PHYS_TO_VM_PAGE(*pmap_pml4e(pmap, va) & PG_FRAME);
+ pmap_unwire_pte_hold(pmap, va, pdppg, info);
+ }
+#endif
+
/*
* This was our last hold, the page had better be unwired
* after we decrement wire_count.
}
static PMAP_INLINE int
-pmap_unwire_pte_hold(pmap_t pmap, vm_page_t m, pmap_inval_info_t info)
+pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m, pmap_inval_info_t info)
+READY1
{
KKASSERT(m->hold_count > 0);
if (m->hold_count > 1) {
vm_page_unhold(m);
return 0;
} else {
- return _pmap_unwire_pte_hold(pmap, m, info);
+ return _pmap_unwire_pte_hold(pmap, va, m, info);
}
}
static int
pmap_unuse_pt(pmap_t pmap, vm_offset_t va, vm_page_t mpte,
pmap_inval_info_t info)
+READY1
{
+ /* JG Use FreeBSD/amd64 or FreeBSD/i386 ptepde approaches? */
vm_pindex_t ptepindex;
- if (va >= UPT_MIN_ADDRESS)
+ if (va >= VM_MAX_USER_ADDRESS)
return 0;
if (mpte == NULL) {
- ptepindex = (va >> PDRSHIFT);
+ ptepindex = pmap_pde_pindex(va);
+#if JGHINT
if (pmap->pm_ptphint &&
(pmap->pm_ptphint->pindex == ptepindex)) {
mpte = pmap->pm_ptphint;
} else {
+#endif
pmap_inval_flush(info);
- mpte = pmap_page_lookup( pmap->pm_pteobj, ptepindex);
+ mpte = pmap_page_lookup(pmap->pm_pteobj, ptepindex);
pmap->pm_ptphint = mpte;
+#if JGHINT
}
+#endif
}
- return pmap_unwire_pte_hold(pmap, mpte, info);
+ return pmap_unwire_pte_hold(pmap, va, mpte, info);
}
/*
*/
void
pmap_pinit0(struct pmap *pmap)
+READY1
{
+#if JGPMAP32
pmap->pm_pdir =
(pd_entry_t *)kmem_alloc_pageable(&kernel_map, PAGE_SIZE);
pmap_kenter((vm_offset_t)pmap->pm_pdir, (vm_offset_t) IdlePTD);
+#endif
+ pmap->pm_pml4 = (pml4_entry_t *)(PTOV_OFFSET + KPML4phys);
pmap->pm_count = 1;
pmap->pm_active = 0;
pmap->pm_ptphint = NULL;
*/
void
pmap_pinit(struct pmap *pmap)
+READY1
{
vm_page_t ptdpg;
* No need to allocate page table space yet but we do need a valid
* page directory table.
*/
- if (pmap->pm_pdir == NULL) {
- pmap->pm_pdir =
- (pd_entry_t *)kmem_alloc_pageable(&kernel_map, PAGE_SIZE);
+ if (pmap->pm_pml4 == NULL) {
+ pmap->pm_pml4 =
+ (pml4_entry_t *)kmem_alloc_pageable(&kernel_map, PAGE_SIZE);
}
/*
* Allocate an object for the ptes
*/
if (pmap->pm_pteobj == NULL)
- pmap->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PTDPTDI + 1);
+ pmap->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PML4PML4I + 1);
/*
* Allocate the page directory page, unless we already have
* already be set appropriately.
*/
if ((ptdpg = pmap->pm_pdirm) == NULL) {
- ptdpg = vm_page_grab(pmap->pm_pteobj, PTDPTDI,
+ ptdpg = vm_page_grab(pmap->pm_pteobj, PML4PML4I,
VM_ALLOC_NORMAL | VM_ALLOC_RETRY);
pmap->pm_pdirm = ptdpg;
vm_page_flag_clear(ptdpg, PG_MAPPED | PG_BUSY);
ptdpg->valid = VM_PAGE_BITS_ALL;
ptdpg->wire_count = 1;
++vmstats.v_wire_count;
- pmap_kenter((vm_offset_t)pmap->pm_pdir, VM_PAGE_TO_PHYS(ptdpg));
+ pmap_kenter((vm_offset_t)pmap->pm_pml4, VM_PAGE_TO_PHYS(ptdpg));
}
if ((ptdpg->flags & PG_ZERO) == 0)
- bzero(pmap->pm_pdir, PAGE_SIZE);
+ bzero(pmap->pm_pml4, PAGE_SIZE);
- pmap->pm_pdir[MPPTDI] = PTD[MPPTDI];
+ pmap->pm_pml4[KPML4I] = KPDPphys | PG_RW | PG_V | PG_U;
+ pmap->pm_pml4[DMPML4I] = DMPDPphys | PG_RW | PG_V | PG_U;
/* install self-referential address mapping entry */
- *(pd_entry_t *) (pmap->pm_pdir + PTDPTDI) =
- VM_PAGE_TO_PHYS(ptdpg) | PG_V | PG_RW | PG_A | PG_M;
+ pmap->pm_pml4[PML4PML4I] = VM_PAGE_TO_PHYS(ptdpg) | PG_V | PG_RW | PG_A | PG_M;
pmap->pm_count = 1;
pmap->pm_active = 0;
*/
void
pmap_puninit(pmap_t pmap)
+READY1
{
vm_page_t p;
KKASSERT(pmap->pm_active == 0);
if ((p = pmap->pm_pdirm) != NULL) {
- KKASSERT(pmap->pm_pdir != NULL);
- pmap_kremove((vm_offset_t)pmap->pm_pdir);
+ KKASSERT(pmap->pm_pml4 != NULL);
+ KKASSERT(pmap->pm_pml4 != (PTOV_OFFSET + KPML4phys));
+ pmap_kremove((vm_offset_t)pmap->pm_pml4);
p->wire_count--;
vmstats.v_wire_count--;
KKASSERT((p->flags & PG_BUSY) == 0);
vm_page_free_zero(p);
pmap->pm_pdirm = NULL;
}
- if (pmap->pm_pdir) {
- kmem_free(&kernel_map, (vm_offset_t)pmap->pm_pdir, PAGE_SIZE);
- pmap->pm_pdir = NULL;
+ if (pmap->pm_pml4) {
+ KKASSERT(pmap->pm_pml4 != (PTOV_OFFSET + KPML4phys));
+ kmem_free(&kernel_map, (vm_offset_t)pmap->pm_pml4, PAGE_SIZE);
+ pmap->pm_pml4 = NULL;
}
if (pmap->pm_pteobj) {
vm_object_deallocate(pmap->pm_pteobj);
*/
void
pmap_pinit2(struct pmap *pmap)
+READY0
{
crit_enter();
TAILQ_INSERT_TAIL(&pmap_list, pmap, pm_pmnode);
/* XXX copies current process, does not fill in MPPTDI */
+#if JGPMAP32
bcopy(PTD + KPTDI, pmap->pm_pdir + KPTDI, nkpt * PTESIZE);
+#endif
crit_exit();
}
*/
static int
pmap_release_free_page(struct pmap *pmap, vm_page_t p)
+READY1
{
- pd_entry_t *pde = (pd_entry_t *) pmap->pm_pdir;
+ pml4_entry_t *pml4 = pmap->pm_pml4;
/*
* This code optimizes the case of freeing non-busy
* page-table pages. Those pages are zero now, and
/*
* Remove the page table page from the processes address space.
*/
+ /* JG XXX we need to turn 'pindex' into a page table level
+ * (PML4, PDP, PD, PT) and index within the page table page
+ */
+#if JGPMAP32
pde[p->pindex] = 0;
+#endif
KKASSERT(pmap->pm_stats.resident_count > 0);
--pmap->pm_stats.resident_count;
if (pmap->pm_ptphint && (pmap->pm_ptphint->pindex == p->pindex))
pmap->pm_ptphint = NULL;
- /*
- * We leave the page directory page cached, wired, and mapped in
- * the pmap until the dtor function (pmap_puninit()) gets called.
- * However, still clean it up so we can set PG_ZERO.
- */
- if (p->pindex == PTDPTDI) {
- bzero(pde + KPTDI, nkpt * PTESIZE);
- pde[MPPTDI] = 0;
- pde[APTDPTDI] = 0;
- vm_page_flag_set(p, PG_ZERO);
- vm_page_wakeup(p);
- } else {
- p->wire_count--;
- vmstats.v_wire_count--;
- vm_page_free_zero(p);
- }
+ p->wire_count--;
+ vmstats.v_wire_count--;
+ vm_page_free_zero(p);
return 1;
}
*/
static vm_page_t
_pmap_allocpte(pmap_t pmap, vm_pindex_t ptepindex)
+READY1
{
- vm_offset_t pteva, ptepa;
- vm_page_t m;
+ vm_page_t m, pdppg, pdpg;
/*
* Find or fabricate a new pagetable page
m = vm_page_grab(pmap->pm_pteobj, ptepindex,
VM_ALLOC_NORMAL | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
+
+ if ((m->flags & PG_ZERO) == 0) {
+ pmap_zero_page(VM_PAGE_TO_PHYS(m));
+ }
+
KASSERT(m->queue == PQ_NONE,
("_pmap_allocpte: %p->queue != PQ_NONE", m));
* directory page while we were blocked, if so just unbusy and
* return the held page.
*/
+#if JGPMAP32
if ((ptepa = pmap->pm_pdir[ptepindex]) != 0) {
KKASSERT((ptepa & PG_FRAME) == VM_PAGE_TO_PHYS(m));
vm_page_wakeup(m);
return(m);
}
+#endif
if (m->wire_count == 0)
vmstats.v_wire_count++;
++pmap->pm_stats.resident_count;
+#if JGPMAP32
ptepa = VM_PAGE_TO_PHYS(m);
pmap->pm_pdir[ptepindex] =
(pd_entry_t) (ptepa | PG_U | PG_RW | PG_V | PG_A | PG_M);
+#endif
+ if (ptepindex >= (NUPDE + NUPDPE)) {
+ pml4_entry_t *pml4;
+ vm_pindex_t pml4index;
+
+ /* Wire up a new PDPE page */
+ pml4index = ptepindex - (NUPDE + NUPDPE);
+ pml4 = &pmap->pm_pml4[pml4index];
+ *pml4 = VM_PAGE_TO_PHYS(m) | PG_U | PG_RW | PG_V | PG_A | PG_M;
+
+ } else if (ptepindex >= NUPDE) {
+ vm_pindex_t pml4index;
+ vm_pindex_t pdpindex;
+ pml4_entry_t *pml4;
+ pdp_entry_t *pdp;
+
+ /* Wire up a new PDE page */
+ pdpindex = ptepindex - NUPDE;
+ pml4index = pdpindex >> NPML4EPGSHIFT;
+
+ pml4 = &pmap->pm_pml4[pml4index];
+ if ((*pml4 & PG_V) == 0) {
+ /* Have to allocate a new pdp, recurse */
+ if (_pmap_allocpte(pmap, NUPDE + NUPDPE + pml4index)
+ == NULL) {
+ --m->wire_count;
+ vm_page_free(m);
+ return (NULL);
+ }
+ } else {
+ /* Add reference to pdp page */
+ pdppg = PHYS_TO_VM_PAGE(*pml4 & PG_FRAME);
+ pdppg->wire_count++;
+ }
+ pdp = (pdp_entry_t *)PHYS_TO_DMAP(*pml4 & PG_FRAME);
- /*
- * Set the page table hint
- */
- pmap->pm_ptphint = m;
+ /* Now find the pdp page */
+ pdp = &pdp[pdpindex & ((1ul << NPDPEPGSHIFT) - 1)];
+ *pdp = VM_PAGE_TO_PHYS(m) | PG_U | PG_RW | PG_V | PG_A | PG_M;
- /*
- * Try to use the new mapping, but if we cannot, then
- * do it with the routine that maps the page explicitly.
- */
- if ((m->flags & PG_ZERO) == 0) {
- if ((pmap->pm_pdir[PTDPTDI] & PG_FRAME) ==
- (((pd_entry_t) PTDpde) & PG_FRAME)) {
- pteva = UPT_MIN_ADDRESS + amd64_ptob(ptepindex);
- bzero((caddr_t) pteva, PAGE_SIZE);
+ } else {
+ vm_pindex_t pml4index;
+ vm_pindex_t pdpindex;
+ pml4_entry_t *pml4;
+ pdp_entry_t *pdp;
+ pd_entry_t *pd;
+
+ /* Wire up a new PTE page */
+ pdpindex = ptepindex >> NPDPEPGSHIFT;
+ pml4index = pdpindex >> NPML4EPGSHIFT;
+
+ /* First, find the pdp and check that its valid. */
+ pml4 = &pmap->pm_pml4[pml4index];
+ if ((*pml4 & PG_V) == 0) {
+ /* Have to allocate a new pd, recurse */
+ if (_pmap_allocpte(pmap, NUPDE + pdpindex)
+ == NULL) {
+ --m->wire_count;
+ vm_page_free(m);
+ return (NULL);
+ }
+ pdp = (pdp_entry_t *)PHYS_TO_DMAP(*pml4 & PG_FRAME);
+ pdp = &pdp[pdpindex & ((1ul << NPDPEPGSHIFT) - 1)];
} else {
- pmap_zero_page(ptepa);
+ pdp = (pdp_entry_t *)PHYS_TO_DMAP(*pml4 & PG_FRAME);
+ pdp = &pdp[pdpindex & ((1ul << NPDPEPGSHIFT) - 1)];
+ if ((*pdp & PG_V) == 0) {
+ /* Have to allocate a new pd, recurse */
+ if (_pmap_allocpte(pmap, NUPDE + pdpindex)
+ == NULL) {
+ --m->wire_count;
+ vm_page_free(m);
+ return (NULL);
+ }
+ } else {
+ /* Add reference to the pd page */
+ pdpg = PHYS_TO_VM_PAGE(*pdp & PG_FRAME);
+ pdpg->wire_count++;
+ }
}
+ pd = (pd_entry_t *)PHYS_TO_DMAP(*pdp & PG_FRAME);
+
+ /* Now we know where the page directory page is */
+ pd = &pd[ptepindex & ((1ul << NPDEPGSHIFT) - 1)];
+ *pd = VM_PAGE_TO_PHYS(m) | PG_U | PG_RW | PG_V | PG_A | PG_M;
}
+
+ /*
+ * Set the page table hint
+ */
+ pmap->pm_ptphint = m;
+
m->valid = VM_PAGE_BITS_ALL;
vm_page_flag_clear(m, PG_ZERO);
vm_page_flag_set(m, PG_MAPPED);
static vm_page_t
pmap_allocpte(pmap_t pmap, vm_offset_t va)
+READY1
{
vm_pindex_t ptepindex;
- vm_offset_t ptepa;
+ pd_entry_t *pd;
vm_page_t m;
/*
* Calculate pagetable page index
*/
- ptepindex = va >> PDRSHIFT;
+ ptepindex = pmap_pde_pindex(va);
/*
* Get the page directory entry
*/
- ptepa = (vm_offset_t) pmap->pm_pdir[ptepindex];
+ pd = pmap_pde(pmap, va);
/*
- * This supports switching from a 4MB page to a
+ * This supports switching from a 2MB page to a
* normal 4K page.
*/
- if (ptepa & PG_PS) {
- pmap->pm_pdir[ptepindex] = 0;
- ptepa = 0;
+ if (pd != NULL && (*pd & (PG_PS | PG_V)) == (PG_PS | PG_V)) {
+ *pd = 0;
+ pd = NULL;
cpu_invltlb();
smp_invltlb();
}
* If the page table page is mapped, we just increment the
* hold count, and activate it.
*/
- if (ptepa) {
- /*
- * In order to get the page table page, try the
- * hint first.
- */
- if (pmap->pm_ptphint &&
- (pmap->pm_ptphint->pindex == ptepindex)) {
- m = pmap->pm_ptphint;
- } else {
- m = pmap_page_lookup( pmap->pm_pteobj, ptepindex);
- pmap->pm_ptphint = m;
- }
+ if (pd != NULL && (*pd & PG_V) != 0) {
+ /* YYY hint is used here on i386 */
+ m = pmap_page_lookup( pmap->pm_pteobj, ptepindex);
+ pmap->pm_ptphint = m;
m->hold_count++;
return m;
}
void
pmap_release(struct pmap *pmap)
+READY1
{
vm_object_t object = pmap->pm_pteobj;
struct rb_vm_page_scan_info info;
static int
pmap_release_callback(struct vm_page *p, void *data)
+READY1
{
struct rb_vm_page_scan_info *info = data;
- if (p->pindex == PTDPTDI) {
+ if (p->pindex == PML4PML4I) {
info->mpte = p;
return(0);
}
void
pmap_growkernel(vm_offset_t addr)
+READY1
{
+ vm_paddr_t paddr;
struct pmap *pmap;
vm_offset_t ptppaddr;
vm_page_t nkpg;
- pd_entry_t newpdir;
+ pd_entry_t *pde, newpdir;
+ pdp_entry_t newpdp;
crit_enter();
if (kernel_vm_end == 0) {
kernel_vm_end = KERNBASE;
nkpt = 0;
- while (pdir_pde(PTD, kernel_vm_end)) {
+ while ((*pmap_pde(&kernel_pmap, kernel_vm_end) & PG_V) != 0) {
kernel_vm_end = (kernel_vm_end + PAGE_SIZE * NPTEPG) & ~(PAGE_SIZE * NPTEPG - 1);
nkpt++;
+ if (kernel_vm_end - 1 >= kernel_map.max_offset) {
+ kernel_vm_end = kernel_map.max_offset;
+ break;
+ }
}
}
- addr = (addr + PAGE_SIZE * NPTEPG) & ~(PAGE_SIZE * NPTEPG - 1);
+ addr = roundup2(addr, PAGE_SIZE * NPTEPG);
+ if (addr - 1 >= kernel_map.max_offset)
+ addr = kernel_map.max_offset;
while (kernel_vm_end < addr) {
- if (pdir_pde(PTD, kernel_vm_end)) {
+ pde = pmap_pde(&kernel_pmap, kernel_vm_end);
+ if (pde == NULL) {
+ /* We need a new PDP entry */
+ nkpg = vm_page_alloc(kptobj, nkpt,
+ VM_ALLOC_NORMAL | VM_ALLOC_SYSTEM
+ | VM_ALLOC_INTERRUPT);
+ if (nkpg == NULL)
+ panic("pmap_growkernel: no memory to grow kernel");
+ if ((nkpg->flags & PG_ZERO) == 0)
+ pmap_zero_page(nkpg);
+ paddr = VM_PAGE_TO_PHYS(nkpg);
+ newpdp = (pdp_entry_t)
+ (paddr | PG_V | PG_RW | PG_A | PG_M);
+ *pmap_pdpe(&kernel_pmap, kernel_vm_end) = newpdp;
+ continue; /* try again */
+ }
+ if ((*pde & PG_V) != 0) {
kernel_vm_end = (kernel_vm_end + PAGE_SIZE * NPTEPG) & ~(PAGE_SIZE * NPTEPG - 1);
+ if (kernel_vm_end - 1 >= kernel_map.max_offset) {
+ kernel_vm_end = kernel_map.max_offset;
+ break;
+ }
continue;
}
/*
* This index is bogus, but out of the way
*/
- nkpg = vm_page_alloc(kptobj, nkpt,
+ nkpg = vm_page_alloc(kptobj, nkpt,
VM_ALLOC_NORMAL | VM_ALLOC_SYSTEM | VM_ALLOC_INTERRUPT);
if (nkpg == NULL)
panic("pmap_growkernel: no memory to grow kernel");
ptppaddr = VM_PAGE_TO_PHYS(nkpg);
pmap_zero_page(ptppaddr);
newpdir = (pd_entry_t) (ptppaddr | PG_V | PG_RW | PG_A | PG_M);
- pdir_pde(PTD, kernel_vm_end) = newpdir;
*pmap_pde(&kernel_pmap, kernel_vm_end) = newpdir;
nkpt++;
- /*
- * This update must be interlocked with pmap_pinit2.
- */
- TAILQ_FOREACH(pmap, &pmap_list, pm_pmnode) {
- *pmap_pde(pmap, kernel_vm_end) = newpdir;
+ kernel_vm_end = (kernel_vm_end + PAGE_SIZE * NPTEPG) & ~(PAGE_SIZE * NPTEPG - 1);
+ if (kernel_vm_end - 1 >= kernel_map.max_offset) {
+ kernel_vm_end = kernel_map.max_offset;
+ break;
}
- kernel_vm_end = (kernel_vm_end + PAGE_SIZE * NPTEPG) &
- ~(PAGE_SIZE * NPTEPG - 1);
}
crit_exit();
}
*/
void
pmap_destroy(pmap_t pmap)
+READY0
{
int count;
*/
void
pmap_reference(pmap_t pmap)
+READY2
{
if (pmap != NULL) {
pmap->pm_count++;
*/
static PMAP_INLINE void
free_pv_entry(pv_entry_t pv)
+READY2
{
pv_entry_count--;
+ KKASSERT(pv_entry_count >= 0);
zfree(pvzone, pv);
}
*/
static pv_entry_t
get_pv_entry(void)
+READY2
{
pv_entry_count++;
if (pv_entry_high_water &&
- (pv_entry_count > pv_entry_high_water) &&
- (pmap_pagedaemon_waken == 0)) {
+ (pv_entry_count > pv_entry_high_water) &&
+ (pmap_pagedaemon_waken == 0)) {
pmap_pagedaemon_waken = 1;
- wakeup (&vm_pages_needed);
+ wakeup(&vm_pages_needed);
}
return zalloc(pvzone);
}
*/
void
pmap_collect(void)
+READY0
{
int i;
vm_page_t m;
if (pmap_pagedaemon_waken == 0)
return;
- pmap_pagedaemon_waken = 0;
if (warningdone < 5) {
kprintf("pmap_collect: collecting pv entries -- suggest increasing PMAP_SHPGPERPROC\n");
continue;
pmap_remove_all(m);
}
+ pmap_pagedaemon_waken = 0;
}
static int
pmap_remove_entry(struct pmap *pmap, vm_page_t m,
vm_offset_t va, pmap_inval_info_t info)
+READY1
{
pv_entry_t pv;
int rtval;
}
rtval = 0;
+ /* JGXXX When can 'pv' be NULL? */
if (pv) {
TAILQ_REMOVE(&m->md.pv_list, pv, pv_list);
m->md.pv_list_count--;
+ KKASSERT(m->md.pv_list_count >= 0);
if (TAILQ_EMPTY(&m->md.pv_list))
vm_page_flag_clear(m, PG_MAPPED | PG_WRITEABLE);
TAILQ_REMOVE(&pmap->pm_pvlist, pv, pv_plist);
*/
static void
pmap_insert_entry(pmap_t pmap, vm_offset_t va, vm_page_t mpte, vm_page_t m)
+READY1
{
pv_entry_t pv;
static int
pmap_remove_pte(struct pmap *pmap, pt_entry_t *ptq, vm_offset_t va,
pmap_inval_info_t info)
+READY1
{
pt_entry_t oldpte;
vm_page_t m;
#if defined(PMAP_DIAGNOSTIC)
if (pmap_nw_modified((pt_entry_t) oldpte)) {
kprintf(
- "pmap_remove: modified page not writable: va: 0x%x, pte: 0x%x\n",
+ "pmap_remove: modified page not writable: va: 0x%lx, pte: 0x%lx\n",
va, oldpte);
}
#endif
*/
static void
pmap_remove_page(struct pmap *pmap, vm_offset_t va, pmap_inval_info_t info)
+READY1
{
- pt_entry_t *ptq;
+ pt_entry_t *pte;
- /*
- * if there is no pte for this address, just skip it!!! Otherwise
- * get a local va for mappings for this pmap and remove the entry.
- */
- if (*pmap_pde(pmap, va) != 0) {
- ptq = get_ptbase(pmap) + amd64_btop(va);
- if (*ptq) {
- pmap_remove_pte(pmap, ptq, va, info);
- }
- }
+ pte = pmap_pte(pmap, va);
+ if (pte == NULL)
+ return;
+ if ((*pte & PG_V) == 0)
+ return;
+ pmap_remove_pte(pmap, pte, va, info);
}
/*
*/
void
pmap_remove(struct pmap *pmap, vm_offset_t sva, vm_offset_t eva)
+READY1
{
- pt_entry_t *ptbase;
- vm_offset_t pdnxt;
- vm_offset_t ptpaddr;
- vm_offset_t sindex, eindex;
+ vm_offset_t va_next;
+ pml4_entry_t *pml4e;
+ pdp_entry_t *pdpe;
+ pd_entry_t ptpaddr, *pde;
+ pt_entry_t *pte;
struct pmap_inval_info info;
if (pmap == NULL)
* common operation and easy to short circuit some
* code.
*/
- if (((sva + PAGE_SIZE) == eva) &&
- ((pmap->pm_pdir[(sva >> PDRSHIFT)] & PG_PS) == 0)) {
- pmap_remove_page(pmap, sva, &info);
- pmap_inval_flush(&info);
- return;
+ if (sva + PAGE_SIZE == eva) {
+ pde = pmap_pde(pmap, sva);
+ if (pde && (*pde & PG_PS) == 0) {
+ pmap_remove_page(pmap, sva, &info);
+ pmap_inval_flush(&info);
+ return;
+ }
}
- /*
- * Get a local virtual address for the mappings that are being
- * worked with.
- */
- sindex = amd64_btop(sva);
- eindex = amd64_btop(eva);
+ for (; sva < eva; sva = va_next) {
+ pml4e = pmap_pml4e(pmap, sva);
+ if ((*pml4e & PG_V) == 0) {
+ va_next = (sva + NBPML4) & ~PML4MASK;
+ if (va_next < sva)
+ va_next = eva;
+ continue;
+ }
- for (; sindex < eindex; sindex = pdnxt) {
- vm_pindex_t pdirindex;
+ pdpe = pmap_pml4e_to_pdpe(pml4e, sva);
+ if ((*pdpe & PG_V) == 0) {
+ va_next = (sva + NBPDP) & ~PDPMASK;
+ if (va_next < sva)
+ va_next = eva;
+ continue;
+ }
/*
* Calculate index for next page table.
*/
- pdnxt = ((sindex + NPTEPG) & ~(NPTEPG - 1));
- if (pmap->pm_stats.resident_count == 0)
- break;
+ va_next = (sva + NBPDR) & ~PDRMASK;
+ if (va_next < sva)
+ va_next = eva;
- pdirindex = sindex / NPDEPG;
- if (((ptpaddr = pmap->pm_pdir[pdirindex]) & PG_PS) != 0) {
- pmap_inval_add(&info, pmap, -1);
- pmap->pm_pdir[pdirindex] = 0;
- pmap->pm_stats.resident_count -= NBPDR / PAGE_SIZE;
- continue;
- }
+ pde = pmap_pdpe_to_pde(pdpe, sva);
+ ptpaddr = *pde;
/*
- * Weed out invalid mappings. Note: we assume that the page
- * directory table is always allocated, and in kernel virtual.
+ * Weed out invalid mappings.
*/
if (ptpaddr == 0)
continue;
/*
+ * Check for large page.
+ */
+ if ((ptpaddr & PG_PS) != 0) {
+ /* JG FreeBSD has more complex treatment here */
+ pmap_inval_add(&info, pmap, -1);
+ *pde = 0;
+ pmap->pm_stats.resident_count -= NBPDR / PAGE_SIZE;
+ continue;
+ }
+
+ /*
* Limit our scan to either the end of the va represented
* by the current page table page, or to the end of the
* range being removed.
*/
- if (pdnxt > eindex) {
- pdnxt = eindex;
- }
+ if (va_next > eva)
+ va_next = eva;
/*
* NOTE: pmap_remove_pte() can block.
*/
- for (; sindex != pdnxt; sindex++) {
- vm_offset_t va;
-
- ptbase = get_ptbase(pmap);
- if (ptbase[sindex] == 0)
+ for (pte = pmap_pde_to_pte(pde, sva); sva != va_next; pte++,
+ sva += PAGE_SIZE) {
+ if (*pte == 0)
continue;
- va = amd64_ptob(sindex);
- if (pmap_remove_pte(pmap, ptbase + sindex, va, &info))
+ if (pmap_remove_pte(pmap, pte, sva, &info))
break;
}
}
static void
pmap_remove_all(vm_page_t m)
+READY1
{
struct pmap_inval_info info;
pt_entry_t *pte, tpte;
*/
if (tpte & PG_M) {
#if defined(PMAP_DIAGNOSTIC)
- if (pmap_nw_modified((pt_entry_t) tpte)) {
+ if (pmap_nw_modified(tpte)) {
kprintf(
- "pmap_remove_all: modified page not writable: va: 0x%x, pte: 0x%x\n",
+ "pmap_remove_all: modified page not writable: va: 0x%lx, pte: 0x%lx\n",
pv->pv_va, tpte);
}
#endif
TAILQ_REMOVE(&pv->pv_pmap->pm_pvlist, pv, pv_plist);
++pv->pv_pmap->pm_generation;
m->md.pv_list_count--;
+ KKASSERT(m->md.pv_list_count >= 0);
if (TAILQ_EMPTY(&m->md.pv_list))
vm_page_flag_clear(m, PG_MAPPED | PG_WRITEABLE);
pmap_unuse_pt(pv->pv_pmap, pv->pv_va, pv->pv_ptem, &info);
*/
void
pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
+READY1
{
- pt_entry_t *ptbase;
- vm_offset_t pdnxt, ptpaddr;
- vm_pindex_t sindex, eindex;
+ vm_offset_t va_next;
+ pml4_entry_t *pml4e;
+ pdp_entry_t *pdpe;
+ pd_entry_t ptpaddr, *pde;
+ pt_entry_t *pte;
pmap_inval_info info;
+ /* JG review for NX */
+
if (pmap == NULL)
return;
pmap_inval_init(&info);
- ptbase = get_ptbase(pmap);
+ for (; sva < eva; sva = va_next) {
- sindex = amd64_btop(sva);
- eindex = amd64_btop(eva);
+ pml4e = pmap_pml4e(pmap, sva);
+ if ((*pml4e & PG_V) == 0) {
+ va_next = (sva + NBPML4) & ~PML4MASK;
+ if (va_next < sva)
+ va_next = eva;
+ continue;
+ }
- for (; sindex < eindex; sindex = pdnxt) {
+ pdpe = pmap_pml4e_to_pdpe(pml4e, sva);
+ if ((*pdpe & PG_V) == 0) {
+ va_next = (sva + NBPDP) & ~PDPMASK;
+ if (va_next < sva)
+ va_next = eva;
+ continue;
+ }
- vm_pindex_t pdirindex;
+ va_next = (sva + NBPDR) & ~PDRMASK;
+ if (va_next < sva)
+ va_next = eva;
- pdnxt = ((sindex + NPTEPG) & ~(NPTEPG - 1));
+ pde = pmap_pdpe_to_pde(pdpe, sva);
+ ptpaddr = *pde;
- pdirindex = sindex / NPDEPG;
- if (((ptpaddr = pmap->pm_pdir[pdirindex]) & PG_PS) != 0) {
+ /*
+ * Check for large page.
+ */
+ if ((ptpaddr & PG_PS) != 0) {
pmap_inval_add(&info, pmap, -1);
- pmap->pm_pdir[pdirindex] &= ~(PG_M|PG_RW);
+ *pde &= ~(PG_M|PG_RW);
pmap->pm_stats.resident_count -= NBPDR / PAGE_SIZE;
continue;
}
if (ptpaddr == 0)
continue;
- if (pdnxt > eindex) {
- pdnxt = eindex;
- }
+ if (va_next > eva)
+ va_next = eva;
- for (; sindex != pdnxt; sindex++) {
-
- pt_entry_t pbits;
+ for (pte = pmap_pde_to_pte(pde, sva); sva != va_next; pte++,
+ sva += PAGE_SIZE) {
+ pt_entry_t obits, pbits;
vm_page_t m;
/*
* ptbase[sindex] (or otherwise we have to do another
* pmap_inval_add() call).
*/
- pmap_inval_add(&info, pmap, amd64_ptob(sindex));
- pbits = ptbase[sindex];
-
+ pmap_inval_add(&info, pmap, sva);
+ obits = pbits = *pte;
+ if ((pbits & PG_V) == 0)
+ continue;
if (pbits & PG_MANAGED) {
m = NULL;
if (pbits & PG_A) {
- m = PHYS_TO_VM_PAGE(pbits);
+ m = PHYS_TO_VM_PAGE(pbits & PG_FRAME);
vm_page_flag_set(m, PG_REFERENCED);
pbits &= ~PG_A;
}
if (pbits & PG_M) {
- if (pmap_track_modified(amd64_ptob(sindex))) {
+ if (pmap_track_modified(sva)) {
if (m == NULL)
+ KKASSERT(pbits == (pbits & PG_FRAME));
m = PHYS_TO_VM_PAGE(pbits);
vm_page_dirty(m);
pbits &= ~PG_M;
pbits &= ~PG_RW;
- if (pbits != ptbase[sindex]) {
- ptbase[sindex] = pbits;
+ if (pbits != obits) {
+ *pte = pbits;
}
}
}
void
pmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot,
boolean_t wired)
+READY1
{
vm_paddr_t pa;
+ pd_entry_t *pde;
pt_entry_t *pte;
vm_paddr_t opa;
- vm_offset_t origpte, newpte;
+ pt_entry_t origpte, newpte;
vm_page_t mpte;
pmap_inval_info info;
if (pmap == NULL)
return;
- va &= PG_FRAME;
+ va = trunc_page(va);
#ifdef PMAP_DIAGNOSTIC
if (va >= KvaEnd)
panic("pmap_enter: toobig");
if ((va >= UPT_MIN_ADDRESS) && (va < UPT_MAX_ADDRESS))
- panic("pmap_enter: invalid to pmap_enter page table pages (va: 0x%x)", va);
+ panic("pmap_enter: invalid to pmap_enter page table pages (va: 0x%lx)", va);
#endif
if (va < UPT_MAX_ADDRESS && pmap == &kernel_pmap) {
kprintf("Warning: pmap_enter called on UVA with kernel_pmap\n");
- print_backtrace();
+#ifdef DDB
+ db_print_backtrace();
+#endif
}
if (va >= UPT_MAX_ADDRESS && pmap != &kernel_pmap) {
kprintf("Warning: pmap_enter called on KVA without kernel_pmap\n");
- print_backtrace();
+#ifdef DDB
+ db_print_backtrace();
+#endif
}
/*
* In the case that a page table page is not
* resident, we are creating it here.
*/
- if (va < UPT_MIN_ADDRESS)
+ if (va < VM_MAX_USER_ADDRESS)
mpte = pmap_allocpte(pmap, va);
else
mpte = NULL;
pmap_inval_init(&info);
- pte = pmap_pte(pmap, va);
-
- /*
- * Page Directory table entry not valid, we need a new PT page
- */
- if (pte == NULL) {
- panic("pmap_enter: invalid page directory pdir=%x, va=0x%x\n",
- pmap->pm_pdir[PTDPTDI], va);
- }
-
- pa = VM_PAGE_TO_PHYS(m) & PG_FRAME;
- origpte = *(vm_offset_t *)pte;
+ pde = pmap_pde(pmap, va);
+ if (pde != NULL && (*pde & PG_V) != 0) {
+ if ((*pde & PG_PS) != 0)
+ panic("pmap_enter: attempted pmap_enter on 2MB page");
+ pte = pmap_pde_to_pte(pde, va);
+ } else
+ panic("pmap_enter: invalid page directory va=%#lx", va);
+
+ KKASSERT(pte != NULL);
+ pa = VM_PAGE_TO_PHYS(m);
+ KKASSERT(pa == (pa & PG_FRAME));
+ origpte = *pte;
opa = origpte & PG_FRAME;
- if (origpte & PG_PS)
- panic("pmap_enter: attempted pmap_enter on 4MB page");
-
/*
* Mapping has not changed, must be protection or wiring change.
*/
pmap->pm_stats.wired_count--;
#if defined(PMAP_DIAGNOSTIC)
- if (pmap_nw_modified((pt_entry_t) origpte)) {
+ if (pmap_nw_modified(origpte)) {
kprintf(
- "pmap_enter: modified page not writable: va: 0x%x, pte: 0x%x\n",
+ "pmap_enter: modified page not writable: va: 0x%lx, pte: 0x%lx\n",
va, origpte);
}
#endif
int err;
err = pmap_remove_pte(pmap, pte, va, &info);
if (err)
- panic("pmap_enter: pte vanished, va: 0x%x", va);
+ panic("pmap_enter: pte vanished, va: 0x%lx", va);
}
/*
/*
* Now validate mapping with desired protection/wiring.
*/
- newpte = (vm_offset_t) (pa | pte_prot(pmap, prot) | PG_V);
+ newpte = (pt_entry_t) (pa | pte_prot(pmap, prot) | PG_V);
if (wired)
newpte |= PG_W;
- if (va < UPT_MIN_ADDRESS)
+ if (va < VM_MAX_USER_ADDRESS)
newpte |= PG_U;
if (pmap == &kernel_pmap)
newpte |= pgeflag;
*/
static void
pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m)
+READY1
{
pt_entry_t *pte;
vm_paddr_t pa;
vm_page_t mpte;
vm_pindex_t ptepindex;
- vm_offset_t ptepa;
+ pd_entry_t *ptepa;
pmap_inval_info info;
pmap_inval_init(&info);
if (va < UPT_MAX_ADDRESS && pmap == &kernel_pmap) {
kprintf("Warning: pmap_enter_quick called on UVA with kernel_pmap\n");
- print_backtrace();
+#ifdef DDB
+ db_print_backtrace();
+#endif
}
if (va >= UPT_MAX_ADDRESS && pmap != &kernel_pmap) {
kprintf("Warning: pmap_enter_quick called on KVA without kernel_pmap\n");
- print_backtrace();
+#ifdef DDB
+ db_print_backtrace();
+#endif
}
KKASSERT(va < UPT_MIN_ADDRESS); /* assert used on user pmaps only */
* A held page table page (mpte), or NULL, is passed onto the
* section following.
*/
- if (va < UPT_MIN_ADDRESS) {
+ if (va < VM_MAX_USER_ADDRESS) {
/*
* Calculate pagetable page index
*/
- ptepindex = va >> PDRSHIFT;
+ ptepindex = pmap_pde_pindex(va);
do {
/*
* Get the page directory entry
*/
- ptepa = (vm_offset_t) pmap->pm_pdir[ptepindex];
+ ptepa = pmap_pde(pmap, va);
/*
* If the page table page is mapped, we just increment
* the hold count, and activate it.
*/
- if (ptepa) {
- if (ptepa & PG_PS)
- panic("pmap_enter_quick: unexpected mapping into 4MB page");
- if (pmap->pm_ptphint &&
- (pmap->pm_ptphint->pindex == ptepindex)) {
- mpte = pmap->pm_ptphint;
- } else {
+ if (ptepa && (*ptepa & PG_V) != 0) {
+ if (*ptepa & PG_PS)
+ panic("pmap_enter_quick: unexpected mapping into 2MB page");
+// if (pmap->pm_ptphint &&
+// (pmap->pm_ptphint->pindex == ptepindex)) {
+// mpte = pmap->pm_ptphint;
+// } else {
mpte = pmap_page_lookup( pmap->pm_pteobj, ptepindex);
pmap->pm_ptphint = mpte;
- }
+// }
if (mpte)
mpte->hold_count++;
} else {
pte = vtopte(va);
if (*pte & PG_V) {
if (mpte)
- pmap_unwire_pte_hold(pmap, mpte, &info);
+ pmap_unwire_pte_hold(pmap, va, mpte, &info);
pa = VM_PAGE_TO_PHYS(m);
KKASSERT(((*pte ^ pa) & PG_FRAME) == 0);
return;
* Make a temporary mapping for a physical address. This is only intended
* to be used for panic dumps.
*/
+/* JG Needed on amd64? */
void *
pmap_kenter_temporary(vm_paddr_t pa, int i)
+READY2
{
pmap_kenter((vm_offset_t)crashdumpmap + (i * PAGE_SIZE), pa);
return ((void *)crashdumpmap);
pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_prot_t prot,
vm_object_t object, vm_pindex_t pindex,
vm_size_t size, int limit)
+READY1
{
struct rb_vm_page_scan_info info;
struct lwp *lp;
- int psize;
+ vm_size_t psize;
/*
* We can't preinit if read access isn't set or there is no pmap
static
int
pmap_object_init_pt_callback(vm_page_t p, void *data)
+READY1
{
struct rb_vm_page_scan_info *info = data;
vm_pindex_t rel_index;
void
pmap_prefault(pmap_t pmap, vm_offset_t addra, vm_map_entry_t entry)
+READY0
{
int i;
vm_offset_t starta;
*/
void
pmap_change_wiring(pmap_t pmap, vm_offset_t va, boolean_t wired)
+READY0
{
pt_entry_t *pte;
void
pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
vm_size_t len, vm_offset_t src_addr)
+READY0
{
pmap_inval_info info;
vm_offset_t addr;
*/
return;
+#if JGPMAP32
src_frame = src_pmap->pm_pdir[PTDPTDI] & PG_FRAME;
if (src_frame != (PTDpde & PG_FRAME)) {
return;
/* The page directory is not shared between CPUs */
cpu_invltlb();
}
+#endif
pmap_inval_init(&info);
pmap_inval_add(&info, dst_pmap, -1);
pmap_inval_add(&info, src_pmap, -1);
pdnxt = ((addr + PAGE_SIZE*NPTEPG) & ~(PAGE_SIZE*NPTEPG - 1));
ptepindex = addr >> PDRSHIFT;
+#if JGPMAP32
srcptepaddr = (vm_offset_t) src_pmap->pm_pdir[ptepindex];
+#endif
if (srcptepaddr == 0)
continue;
if (srcptepaddr & PG_PS) {
+#if JGPMAP32
if (dst_pmap->pm_pdir[ptepindex] == 0) {
dst_pmap->pm_pdir[ptepindex] = (pd_entry_t) srcptepaddr;
dst_pmap->pm_stats.resident_count += NBPDR / PAGE_SIZE;
}
+#endif
continue;
}
pdnxt = end_addr;
src_pte = vtopte(addr);
+#if JGPMAP32
dst_pte = avtopte(addr);
+#endif
while (addr < pdnxt) {
pt_entry_t ptetemp;
*/
dstmpte = pmap_allocpte(dst_pmap, addr);
+#if JGPMAP32
if (src_frame != (PTDpde & PG_FRAME) ||
dst_frame != (APTDpde & PG_FRAME)
) {
pmap_unwire_pte_hold(dst_pmap, dstmpte, &info);
goto failed;
}
+#endif
if (dstmpte->hold_count >= srcmpte->hold_count)
break;
}
/*
* pmap_zero_page:
*
- * Zero the specified PA by mapping the page into KVM and clearing its
- * contents.
+ * Zero the specified physical page.
*
* This function may be called from an interrupt and no locking is
* required.
*/
void
pmap_zero_page(vm_paddr_t phys)
+READY1
{
- struct mdglobaldata *gd = mdcpu;
+ vm_offset_t va = PHYS_TO_DMAP(phys);
- crit_enter();
- if (*gd->gd_CMAP3)
- panic("pmap_zero_page: CMAP3 busy");
- *gd->gd_CMAP3 =
- PG_V | PG_RW | (phys & PG_FRAME) | PG_A | PG_M;
- cpu_invlpg(gd->gd_CADDR3);
-
-#if defined(I686_CPU)
- if (cpu_class == CPUCLASS_686)
- i686_pagezero(gd->gd_CADDR3);
- else
-#endif
- bzero(gd->gd_CADDR3, PAGE_SIZE);
- *gd->gd_CMAP3 = 0;
- crit_exit();
+ pagezero((void *)va);
}
/*
*/
void
pmap_page_assertzero(vm_paddr_t phys)
+READY1
{
struct mdglobaldata *gd = mdcpu;
int i;
crit_enter();
- if (*gd->gd_CMAP3)
- panic("pmap_zero_page: CMAP3 busy");
- *gd->gd_CMAP3 =
- PG_V | PG_RW | (phys & PG_FRAME) | PG_A | PG_M;
- cpu_invlpg(gd->gd_CADDR3);
+ vm_offset_t virt = PHYS_TO_DMAP(phys);
+
for (i = 0; i < PAGE_SIZE; i += sizeof(int)) {
- if (*(int *)((char *)gd->gd_CADDR3 + i) != 0) {
+ if (*(int *)((char *)virt + i) != 0) {
panic("pmap_page_assertzero() @ %p not zero!\n",
- (void *)gd->gd_CADDR3);
+ (void *)virt);
}
}
- *gd->gd_CMAP3 = 0;
crit_exit();
}
*/
void
pmap_zero_page_area(vm_paddr_t phys, int off, int size)
+READY1
{
struct mdglobaldata *gd = mdcpu;
crit_enter();
- if (*gd->gd_CMAP3)
- panic("pmap_zero_page: CMAP3 busy");
- *gd->gd_CMAP3 = PG_V | PG_RW | (phys & PG_FRAME) | PG_A | PG_M;
- cpu_invlpg(gd->gd_CADDR3);
-
-#if defined(I686_CPU)
- if (cpu_class == CPUCLASS_686 && off == 0 && size == PAGE_SIZE)
- i686_pagezero(gd->gd_CADDR3);
- else
-#endif
- bzero((char *)gd->gd_CADDR3 + off, size);
- *gd->gd_CMAP3 = 0;
+ vm_offset_t virt = PHYS_TO_DMAP(phys);
+ bzero((char *)virt + off, size);
crit_exit();
}
*/
void
pmap_copy_page(vm_paddr_t src, vm_paddr_t dst)
+READY1
{
- struct mdglobaldata *gd = mdcpu;
+ vm_offset_t src_virt, dst_virt;
crit_enter();
- if (*gd->gd_CMAP1)
- panic("pmap_copy_page: CMAP1 busy");
- if (*gd->gd_CMAP2)
- panic("pmap_copy_page: CMAP2 busy");
-
- *gd->gd_CMAP1 = PG_V | (src & PG_FRAME) | PG_A;
- *gd->gd_CMAP2 = PG_V | PG_RW | (dst & PG_FRAME) | PG_A | PG_M;
-
- cpu_invlpg(gd->gd_CADDR1);
- cpu_invlpg(gd->gd_CADDR2);
-
- bcopy(gd->gd_CADDR1, gd->gd_CADDR2, PAGE_SIZE);
-
- *gd->gd_CMAP1 = 0;
- *gd->gd_CMAP2 = 0;
+ src_virt = PHYS_TO_DMAP(src);
+ dst_virt = PHYS_TO_DMAP(dst);
+ bcopy(src_virt, dst_virt, PAGE_SIZE);
crit_exit();
}
*/
void
pmap_copy_page_frag(vm_paddr_t src, vm_paddr_t dst, size_t bytes)
+READY1
{
- struct mdglobaldata *gd = mdcpu;
+ vm_offset_t src_virt, dst_virt;
crit_enter();
- if (*gd->gd_CMAP1)
- panic("pmap_copy_page: CMAP1 busy");
- if (*gd->gd_CMAP2)
- panic("pmap_copy_page: CMAP2 busy");
-
- *gd->gd_CMAP1 = PG_V | (src & PG_FRAME) | PG_A;
- *gd->gd_CMAP2 = PG_V | PG_RW | (dst & PG_FRAME) | PG_A | PG_M;
-
- cpu_invlpg(gd->gd_CADDR1);
- cpu_invlpg(gd->gd_CADDR2);
-
- bcopy((char *)gd->gd_CADDR1 + (src & PAGE_MASK),
- (char *)gd->gd_CADDR2 + (dst & PAGE_MASK),
+ src_virt = PHYS_TO_DMAP(src);
+ dst_virt = PHYS_TO_DMAP(dst);
+ bcopy((char *)src_virt + (src & PAGE_MASK),
+ (char *)dst_virt + (dst & PAGE_MASK),
bytes);
-
- *gd->gd_CMAP1 = 0;
- *gd->gd_CMAP2 = 0;
crit_exit();
}
*/
boolean_t
pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
+READY2
{
pv_entry_t pv;
int loops = 0;
*/
void
pmap_remove_pages(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
+READY1
{
struct lwp *lp;
pt_entry_t *pte, tpte;
vm_page_t m;
pmap_inval_info info;
int iscurrentpmap;
- int32_t save_generation;
+ int save_generation;
lp = curthread->td_lwp;
if (lp && pmap == vmspace_pmap(lp->lwp_vmspace))
}
tpte = pte_load_clear(pte);
- m = PHYS_TO_VM_PAGE(tpte);
+ m = PHYS_TO_VM_PAGE(tpte & PG_FRAME);
KASSERT(m < &vm_page_array[vm_page_array_size],
- ("pmap_remove_pages: bad tpte %x", tpte));
+ ("pmap_remove_pages: bad tpte %lx", tpte));
KKASSERT(pmap->pm_stats.resident_count > 0);
--pmap->pm_stats.resident_count;
*/
static boolean_t
pmap_testbit(vm_page_t m, int bit)
+READY1
{
pv_entry_t pv;
pt_entry_t *pte;
}
#if defined(PMAP_DIAGNOSTIC)
- if (!pv->pv_pmap) {
- kprintf("Null pmap (tb) at va: 0x%x\n", pv->pv_va);
+ if (pv->pv_pmap == NULL) {
+ kprintf("Null pmap (tb) at va: 0x%lx\n", pv->pv_va);
continue;
}
#endif
*/
static __inline void
pmap_clearbit(vm_page_t m, int bit)
+READY1
{
struct pmap_inval_info info;
pv_entry_t pv;
}
#if defined(PMAP_DIAGNOSTIC)
- if (!pv->pv_pmap) {
- kprintf("Null pmap (cb) at va: 0x%x\n", pv->pv_va);
+ if (pv->pv_pmap == NULL) {
+ kprintf("Null pmap (cb) at va: 0x%lx\n", pv->pv_va);
continue;
}
#endif
if (bit == PG_RW) {
if (pbits & PG_M) {
vm_page_dirty(m);
- atomic_clear_int(pte, PG_M|PG_RW);
+ atomic_clear_long(pte, PG_M|PG_RW);
} else {
/*
* The cpu may be trying to set PG_M
* simultaniously with our clearing
* of PG_RW.
*/
- if (!atomic_cmpset_int(pte, pbits,
+ if (!atomic_cmpset_long(pte, pbits,
pbits & ~PG_RW))
goto again;
}
* when they clear the VPTE_M bit in their
* virtual page tables.
*/
- atomic_clear_int(pte, PG_M);
+ atomic_clear_long(pte, PG_M);
} else {
- atomic_clear_int(pte, bit);
+ atomic_clear_long(pte, bit);
}
}
}
*/
void
pmap_page_protect(vm_page_t m, vm_prot_t prot)
+READY1
{
+ /* JG NX support? */
if ((prot & VM_PROT_WRITE) == 0) {
if (prot & (VM_PROT_READ | VM_PROT_EXECUTE)) {
pmap_clearbit(m, PG_RW);
vm_paddr_t
pmap_phys_address(vm_pindex_t ppn)
+READY2
{
return (amd64_ptob(ppn));
}
*/
int
pmap_ts_referenced(vm_page_t m)
+READY1
{
pv_entry_t pv, pvf, pvn;
pt_entry_t *pte;
if (pte && (*pte & PG_A)) {
#ifdef SMP
- atomic_clear_int(pte, PG_A);
+ atomic_clear_long(pte, PG_A);
#else
- atomic_clear_int_nonlocked(pte, PG_A);
+ atomic_clear_long_nonlocked(pte, PG_A);
#endif
rtval++;
if (rtval > 4) {
*/
boolean_t
pmap_is_modified(vm_page_t m)
+READY2
{
return pmap_testbit(m, PG_M);
}
*/
void
pmap_clear_modify(vm_page_t m)
+READY2
{
pmap_clearbit(m, PG_M);
}
*/
void
pmap_clear_reference(vm_page_t m)
+READY2
{
pmap_clearbit(m, PG_A);
}
static void
i386_protection_init(void)
+READY0
{
int *kp, prot;
+ /* JG NX support may go here; No VM_PROT_EXECUTE ==> set NX bit */
kp = protection_codes;
for (prot = 0; prot < 8; prot++) {
switch (prot) {
*/
void *
pmap_mapdev(vm_paddr_t pa, vm_size_t size)
+READY1
{
vm_offset_t va, tmpva, offset;
pt_entry_t *pte;
size = roundup(offset + size, PAGE_SIZE);
va = kmem_alloc_nofault(&kernel_map, size);
- if (!va)
+ if (va == 0)
panic("pmap_mapdev: Couldn't alloc kernel virtual memory");
- pa = pa & PG_FRAME;
+ pa = pa & ~PAGE_MASK;
for (tmpva = va; size > 0;) {
pte = vtopte(tmpva);
*pte = pa | PG_RW | PG_V; /* | pgeflag; */
void
pmap_unmapdev(vm_offset_t va, vm_size_t size)
+READY1
{
vm_offset_t base, offset;
- base = va & PG_FRAME;
+ base = va & ~PAGE_MASK;
offset = va & PAGE_MASK;
size = roundup(offset + size, PAGE_SIZE);
pmap_qremove(va, size >> PAGE_SHIFT);
*/
int
pmap_mincore(pmap_t pmap, vm_offset_t addr)
+READY0
{
pt_entry_t *ptep, pte;
vm_page_t m;
*/
void
pmap_replacevm(struct proc *p, struct vmspace *newvm, int adjrefs)
+READY2
{
struct vmspace *oldvm;
struct lwp *lp;
*/
void
pmap_setlwpvm(struct lwp *lp, struct vmspace *newvm)
+READY1
{
struct vmspace *oldvm;
struct pmap *pmap;
#if defined(SWTCH_OPTIM_STATS)
tlb_flush_count++;
#endif
- curthread->td_pcb->pcb_cr3 = vtophys(pmap->pm_pdir);
- curthread->td_pcb->pcb_cr3 |= PG_RW | PG_U | PG_V;
- *link_pdpe = curthread->td_pcb->pcb_cr3 | PG_RW | PG_U | PG_V;
- load_cr3(common_lvl4_phys);
+ curthread->td_pcb->pcb_cr3 = vtophys(pmap->pm_pml4);
+ load_cr3(curthread->td_pcb->pcb_cr3);
pmap = vmspace_pmap(oldvm);
#if defined(SMP)
atomic_clear_int(&pmap->pm_active,
vm_offset_t
pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size)
+READY0
{
if ((obj == NULL) || (size < NBPDR) || (obj->type != OBJT_DEVICE)) {
/* print address space of pmap*/
static void
pads(pmap_t pm)
+READY0
{
vm_offset_t va;
unsigned i, j;
return;
crit_enter();
for (i = 0; i < NPDEPG; i++) {
+#if JGPMAP32
if (pm->pm_pdir[i]) {
for (j = 0; j < NPTEPG; j++) {
va = (i << PDRSHIFT) + (j << PAGE_SHIFT);
kprintf("%lx:%lx ", va, *ptep);
};
}
+#endif
}
crit_exit();
void
pmap_pvdump(vm_paddr_t pa)
+READY0
{
pv_entry_t pv;
vm_page_t m;
projects / dragonfly.git / commitdiff