-
/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <kern/kern_types.h>
#include <kern/thread.h>
#include <kern/lock.h>
+#include <mach/branch_predicates.h>
#include <i386/mp.h>
#include <i386/proc_reg.h>
+#include <i386/pal_routines.h>
+
/*
* Define the generic in terms of the specific
*/
#endif /* ASSEMBLER */
-#define NPGPTD 4
-#define PDESHIFT 21
-#define PTEMASK 0x1ff
-#define PTEINDX 3
+#define NPGPTD 4ULL
+#define PDESHIFT 21ULL
+#define PTEMASK 0x1ffULL
+#define PTEINDX 3ULL
+
+#define PTESHIFT 12ULL
+
+#ifdef __i386__
+#define INITPT_SEG_BASE 0x100000
+#endif
-#define PTESHIFT 12
+#ifdef __x86_64__
+#define LOW_4GB_MASK ((vm_offset_t)0x00000000FFFFFFFFUL)
+#endif
#define PDESIZE sizeof(pd_entry_t) /* for assembly files */
#define PTESIZE sizeof(pt_entry_t) /* for assembly files */
#define INTEL_OFFMASK (I386_PGBYTES - 1)
+#define INTEL_LOFFMASK (I386_LPGBYTES - 1)
#define PG_FRAME 0x000FFFFFFFFFF000ULL
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
#define NPTDPG (PAGE_SIZE/(sizeof (pd_entry_t)))
#define NBPTD (NPGPTD << PAGE_SHIFT)
#define NPDEPTD (NBPTD / (sizeof (pd_entry_t)))
#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
-#define NBPDE (1 << PDESHIFT)
+#define NBPDE (1ULL << PDESHIFT)
#define PDEMASK (NBPDE - 1)
+#define PTE_PER_PAGE 512 /* number of PTE's per page on any level */
+
/* cleanly define parameters for all the page table levels */
typedef uint64_t pml4_entry_t;
#define NPML4PG (PAGE_SIZE/(sizeof (pml4_entry_t)))
#define NPDPTPG (PAGE_SIZE/(sizeof (pdpt_entry_t)))
#define PDPTSHIFT 30
#define PDPTPGSHIFT 9
-#define NBPDPT (1 << PDPTSHIFT)
+#define NBPDPT (1ULL << PDPTSHIFT)
#define PDPTMASK (NBPDPT-1)
#define PDPT_ENTRY_NULL ((pdpt_entry_t *) 0)
#define NPDPG (PAGE_SIZE/(sizeof (pd_entry_t)))
#define PDSHIFT 21
#define PDPGSHIFT 9
-#define NBPD (1 << PDSHIFT)
+#define NBPD (1ULL << PDSHIFT)
#define PDMASK (NBPD-1)
#define PD_ENTRY_NULL ((pd_entry_t *) 0)
#define NPTPG (PAGE_SIZE/(sizeof (pt_entry_t)))
#define PTSHIFT 12
#define PTPGSHIFT 9
-#define NBPT (1 << PTSHIFT)
+#define NBPT (1ULL << PTSHIFT)
#define PTMASK (NBPT-1)
#define PT_ENTRY_NULL ((pt_entry_t *) 0)
typedef uint64_t pmap_paddr_t;
+#if DEBUG
+#define PMAP_ASSERT 1
+#endif
+#if PMAP_ASSERT
+#define pmap_assert(ex) ((ex) ? (void)0 : Assert(__FILE__, __LINE__, # ex))
+
+#define pmap_assert2(ex, fmt, args...) \
+ do { \
+ if (!(ex)) { \
+ kprintf("Assertion %s failed (%s:%d, caller %p) " fmt , #ex, __FILE__, __LINE__, __builtin_return_address(0), ##args); \
+ panic("Assertion %s failed (%s:%d, caller %p) " fmt , #ex, __FILE__, __LINE__, __builtin_return_address(0), ##args); \
+ } \
+ } while(0)
+#else
+#define pmap_assert(ex)
+#define pmap_assert2(ex, fmt, args...)
+#endif
+
+/* superpages */
+#ifdef __x86_64__
+#define SUPERPAGE_NBASEPAGES 512
+#else
+#define SUPERPAGE_NBASEPAGES 1 /* we don't support superpages on i386 */
+#endif
+
/*
* Atomic 64-bit store of a page table entry.
*/
static inline void
pmap_store_pte(pt_entry_t *entryp, pt_entry_t value)
{
+#ifdef __i386__
/*
* Load the new value into %ecx:%ebx
* Load the old value into %edx:%eax
* If the compare succeeds, the new value will have been stored.
* Otherwise, the old value changed and reloaded, so try again.
*/
- asm volatile(
+ __asm__ volatile(
" movl (%0), %%eax \n\t"
" movl 4(%0), %%edx \n\t"
"1: \n\t"
"b" ((uint32_t)value),
"c" ((uint32_t)(value >> 32))
: "eax", "edx", "memory");
+#else
+ /*
+ * In the 32-bit kernel a compare-and-exchange loop was
+ * required to provide atomicity. For K64, life is easier:
+ */
+ *entryp = value;
+#endif
}
/* in 64 bit spaces, the number of each type of page in the page tables */
#define NPDEPGS (NPDPTPGS * (PAGE_SIZE/(sizeof (pd_entry_t))))
#define NPTEPGS (NPDEPGS * (PAGE_SIZE/(sizeof (pt_entry_t))))
+#ifdef __i386__
/*
* The 64-bit kernel is remapped in uber-space which is at the base
* the highest 4th-level directory (KERNEL_UBER_PML4_INDEX). That is,
#define KERNEL_UBER_PML4_INDEX 511
#define KERNEL_UBER_BASE (0ULL - NBPML4)
#define KERNEL_UBER_BASE_HI32 ((uint32_t)(KERNEL_UBER_BASE >> 32))
+#else
+#define KERNEL_PML4_INDEX 511
+#define KERNEL_KEXTS_INDEX 510 /* Home of KEXTs - the basement */
+#define KERNEL_PHYSMAP_PML4_INDEX 509 /* virtual to physical map */
+#define KERNEL_BASE (0ULL - NBPML4)
+#define KERNEL_BASEMENT (KERNEL_BASE - NBPML4)
+#endif
#define VM_WIMG_COPYBACK VM_MEM_COHERENT
+#define VM_WIMG_COPYBACKLW VM_WIMG_COPYBACK
#define VM_WIMG_DEFAULT VM_MEM_COHERENT
/* ?? intel ?? */
#define VM_WIMG_IO (VM_MEM_COHERENT | \
#define VM_WIMG_WTHRU (VM_MEM_WRITE_THROUGH | VM_MEM_COHERENT | VM_MEM_GUARDED)
/* write combining mode, aka store gather */
#define VM_WIMG_WCOMB (VM_MEM_NOT_CACHEABLE | VM_MEM_COHERENT)
-
+#define VM_WIMG_INNERWBACK VM_MEM_COHERENT
/*
* Pte related macros
*/
+#ifdef __i386__
#define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PDESHIFT)|((pti)<<PTESHIFT)))
#define VADDR64(pmi, pdi, pti) ((vm_offset_t)(((pmi)<<PLM4SHIFT))((pdi)<<PDESHIFT)|((pti)<<PTESHIFT))
+#else
+#define KVADDR(pmi, pdpi, pdi, pti) \
+ ((vm_offset_t) \
+ ((uint64_t) -1 << 47) | \
+ ((uint64_t)(pmi) << PML4SHIFT) | \
+ ((uint64_t)(pdpi) << PDPTSHIFT) | \
+ ((uint64_t)(pdi) << PDESHIFT) | \
+ ((uint64_t)(pti) << PTESHIFT))
+#endif
/*
* Size of Kernel address space. This is the number of page table pages
#endif
+#ifdef __i386__
enum high_cpu_types {
HIGH_CPU_ISS0,
HIGH_CPU_ISS1,
#define HIGH_MEM_BASE ((uint32_t)( -NBPDE) ) /* shared gdt etc seg addr */ /* XXX64 ?? */
#define pmap_index_to_virt(x) (HIGH_MEM_BASE | ((unsigned)(x) << PAGE_SHIFT))
+#endif
/*
* Convert address offset to page descriptor index
*/
-#define pdenum(pmap, a) (((vm_offset_t)(a) >> PDESHIFT) & PDEMASK)
+#define pdptnum(pmap, a) (((vm_offset_t)(a) >> PDPTSHIFT) & PDPTMASK)
+#define pdenum(pmap, a) (((vm_offset_t)(a) >> PDESHIFT) & PDEMASK)
+#define PMAP_INVALID_PDPTNUM (~0ULL)
#define pdeidx(pmap, a) (((a) >> PDSHIFT) & ((1ULL<<(48 - PDSHIFT)) -1))
#define pdptidx(pmap, a) (((a) >> PDPTSHIFT) & ((1ULL<<(48 - PDPTSHIFT)) -1))
#define pml4idx(pmap, a) (((a) >> PML4SHIFT) & ((1ULL<<(48 - PML4SHIFT)) -1))
+
/*
* Convert page descriptor index to user virtual address
*/
* without using the bit fields).
*/
-#define INTEL_PTE_VALID 0x00000001
-#define INTEL_PTE_WRITE 0x00000002
-#define INTEL_PTE_RW 0x00000002
-#define INTEL_PTE_USER 0x00000004
-#define INTEL_PTE_WTHRU 0x00000008
-#define INTEL_PTE_NCACHE 0x00000010
-#define INTEL_PTE_REF 0x00000020
-#define INTEL_PTE_MOD 0x00000040
-#define INTEL_PTE_PS 0x00000080
-#define INTEL_PTE_GLOBAL 0x00000100
-#define INTEL_PTE_WIRED 0x00000200
+#define INTEL_PTE_VALID 0x00000001ULL
+#define INTEL_PTE_WRITE 0x00000002ULL
+#define INTEL_PTE_RW 0x00000002ULL
+#define INTEL_PTE_USER 0x00000004ULL
+#define INTEL_PTE_WTHRU 0x00000008ULL
+#define INTEL_PTE_NCACHE 0x00000010ULL
+#define INTEL_PTE_REF 0x00000020ULL
+#define INTEL_PTE_MOD 0x00000040ULL
+#define INTEL_PTE_PS 0x00000080ULL
+#define INTEL_PTE_PTA 0x00000080ULL
+#define INTEL_PTE_GLOBAL 0x00000100ULL
+#define INTEL_PTE_WIRED 0x00000200ULL
+#define INTEL_PDPTE_NESTED 0x00000400ULL
#define INTEL_PTE_PFN PG_FRAME
-#define INTEL_PTE_PTA 0x00000080
#define INTEL_PTE_NX (1ULL << 63)
#define INTEL_PTE_INVALID 0
+/* This is conservative, but suffices */
+#define INTEL_PTE_RSVD ((1ULL << 10) | (1ULL << 11) | (0x1FFULL << 54))
#define pa_to_pte(a) ((a) & INTEL_PTE_PFN) /* XXX */
#define pte_to_pa(p) ((p) & INTEL_PTE_PFN) /* XXX */
* and directories.
*/
-extern pt_entry_t PTmap[], APTmap[], Upte;
-extern pd_entry_t PTD[], APTD[], PTDpde[], APTDpde[], Upde;
-
-extern pd_entry_t *IdlePTD; /* physical address of "Idle" state directory */
-extern pdpt_entry_t *IdlePDPT;
-
-extern pmap_paddr_t lo_kernel_cr3;
+#ifdef __i386__
+extern pt_entry_t PTmap[], APTmap[], Upte;
+extern pd_entry_t PTD[], APTD[], PTDpde[], APTDpde[], Upde;
+extern pmap_paddr_t lo_kernel_cr3;
+extern pdpt_entry_t *IdlePDPT64;
+extern pdpt_entry_t IdlePDPT[];
+extern pml4_entry_t IdlePML4[];
+#else
+extern pt_entry_t *PTmap;
+extern pdpt_entry_t *IdlePDPT;
+extern pml4_entry_t *IdlePML4;
+#endif
+extern boolean_t no_shared_cr3;
+extern addr64_t kernel64_cr3;
+extern pd_entry_t *IdlePTD; /* physical addr of "Idle" state PTD */
-extern pml4_entry_t *IdlePML4;
-extern pdpt_entry_t *IdlePDPT64;
-extern addr64_t kernel64_cr3;
-extern boolean_t no_shared_cr3;
+extern uint64_t pmap_pv_hashlist_walks;
+extern uint64_t pmap_pv_hashlist_cnts;
+extern uint32_t pmap_pv_hashlist_max;
+extern uint32_t pmap_kernel_text_ps;
+#ifdef __i386__
/*
+ * ** i386 **
* virtual address to page table entry and
* to physical address. Likewise for alternate address space.
* Note: these work recursively, thus vtopte of a pte will give
* the corresponding pde that in turn maps it.
*/
+
#define vtopte(va) (PTmap + i386_btop((vm_offset_t)va))
+#endif
+
+
+#ifdef __x86_64__
+#define ID_MAP_VTOP(x) ((void *)(((uint64_t)(x)) & LOW_4GB_MASK))
+extern uint64_t physmap_base, physmap_max;
+
+#define NPHYSMAP (MAX(K64_MAXMEM/GB + 4, 4))
+
+static inline boolean_t physmap_enclosed(addr64_t a) {
+ return (a < (NPHYSMAP * GB));
+}
+
+static inline void * PHYSMAP_PTOV_check(void *paddr) {
+ uint64_t pvaddr = (uint64_t)paddr + physmap_base;
+
+ if (__improbable(pvaddr >= physmap_max))
+ panic("PHYSMAP_PTOV bounds exceeded, 0x%qx, 0x%qx, 0x%qx",
+ pvaddr, physmap_base, physmap_max);
+
+ return (void *)pvaddr;
+}
+
+#define PHYSMAP_PTOV(x) (PHYSMAP_PTOV_check((void*) (x)))
+
+/*
+ * For KASLR, we alias the master processor's IDT and GDT at fixed
+ * virtual addresses to defeat SIDT/SGDT address leakage.
+ */
+#define MASTER_IDT_ALIAS (VM_MIN_KERNEL_ADDRESS + 0x0000)
+#define MASTER_GDT_ALIAS (VM_MIN_KERNEL_ADDRESS + 0x1000)
+
+/*
+ * The low global vector page is mapped at a fixed alias also.
+ */
+#define LOWGLOBAL_ALIAS (VM_MIN_KERNEL_ADDRESS + 0x2000)
+
+#endif /*__x86_64__ */
typedef volatile long cpu_set; /* set of CPUs - must be <= 32 */
/* changed by other processors */
-struct md_page {
- int pv_list_count;
- TAILQ_HEAD(,pv_entry) pv_list;
-};
-
#include <vm/vm_page.h>
/*
*/
struct pmap {
+ decl_simple_lock_data(,lock) /* lock on map */
+ pmap_paddr_t pm_cr3; /* physical addr */
+ boolean_t pm_shared;
pd_entry_t *dirbase; /* page directory pointer */
+#ifdef __i386__
pmap_paddr_t pdirbase; /* phys. address of dirbase */
- vm_object_t pm_obj; /* object to hold pde's */
- int ref_count; /* reference count */
- int nx_enabled;
- boolean_t pm_64bit;
- boolean_t pm_kernel_cr3;
- boolean_t pm_shared;
- decl_simple_lock_data(,lock) /* lock on map */
- struct pmap_statistics stats; /* map statistics */
vm_offset_t pm_hold; /* true pdpt zalloc addr */
- pmap_paddr_t pm_cr3; /* physical addr */
+#endif
+ vm_object_t pm_obj; /* object to hold pde's */
+ task_map_t pm_task_map;
pdpt_entry_t *pm_pdpt; /* KVA of 3rd level page */
pml4_entry_t *pm_pml4; /* VKA of top level */
vm_object_t pm_obj_pdpt; /* holds pdpt pages */
vm_object_t pm_obj_pml4; /* holds pml4 pages */
- vm_object_t pm_obj_top; /* holds single top level page */
+#define PMAP_PCID_MAX_CPUS (48) /* Must be a multiple of 8 */
+ pcid_t pmap_pcid_cpus[PMAP_PCID_MAX_CPUS];
+ volatile uint8_t pmap_pcid_coherency_vector[PMAP_PCID_MAX_CPUS];
+ struct pmap_statistics stats; /* map statistics */
+ int ref_count; /* reference count */
+ int nx_enabled;
+ ledger_t ledger; /* ledger tracking phys mappings */
};
+#if NCOPY_WINDOWS > 0
#define PMAP_PDPT_FIRST_WINDOW 0
#define PMAP_PDPT_NWINDOWS 4
#define PMAP_PDE_FIRST_WINDOW (PMAP_PDPT_NWINDOWS)
extern mapwindow_t *pmap_get_mapwindow(pt_entry_t pentry);
+extern void pmap_put_mapwindow(mapwindow_t *map);
+#endif
typedef struct pmap_memory_regions {
- ppnum_t base;
- ppnum_t end;
- ppnum_t alloc;
- uint32_t type;
+ ppnum_t base;
+ ppnum_t end;
+ ppnum_t alloc;
+ uint32_t type;
+ uint64_t attribute;
} pmap_memory_region_t;
-unsigned pmap_memory_region_count;
-unsigned pmap_memory_region_current;
+extern unsigned pmap_memory_region_count;
+extern unsigned pmap_memory_region_current;
#define PMAP_MEMORY_REGIONS_SIZE 128
extern pmap_memory_region_t pmap_memory_regions[];
+#include <i386/pmap_pcid.h>
-static inline void set_dirbase(pmap_t tpmap, __unused int tcpu) {
- current_cpu_datap()->cpu_task_cr3 = (pmap_paddr_t)((tpmap)->pm_cr3);
- current_cpu_datap()->cpu_task_map = tpmap->pm_64bit ? TASK_MAP_64BIT : TASK_MAP_32BIT;
+static inline void
+set_dirbase(pmap_t tpmap, __unused thread_t thread) {
+ int ccpu = cpu_number();
+ cpu_datap(ccpu)->cpu_task_cr3 = tpmap->pm_cr3;
+ cpu_datap(ccpu)->cpu_task_map = tpmap->pm_task_map;
+#ifndef __i386__
+ /*
+ * Switch cr3 if necessary
+ * - unless running with no_shared_cr3 debugging mode
+ * and we're not on the kernel's cr3 (after pre-empted copyio)
+ */
+ if (__probable(!no_shared_cr3)) {
+ if (get_cr3_base() != tpmap->pm_cr3) {
+ if (pmap_pcid_ncpus) {
+ pmap_pcid_activate(tpmap, ccpu);
+ }
+ else
+ set_cr3_raw(tpmap->pm_cr3);
+ }
+ } else {
+ if (get_cr3_base() != cpu_datap(ccpu)->cpu_kernel_cr3)
+ set_cr3_raw(cpu_datap(ccpu)->cpu_kernel_cr3);
+ }
+#endif
}
/*
extern addr64_t (kvtophys)(
vm_offset_t addr);
+extern kern_return_t pmap_expand(
+ pmap_t pmap,
+ vm_map_offset_t addr,
+ unsigned int options);
+#if !defined(__x86_64__)
extern pt_entry_t *pmap_pte(
struct pmap *pmap,
vm_map_offset_t addr);
extern pdpt_entry_t *pmap64_pdpt(
struct pmap *pmap,
vm_map_offset_t addr);
-
+#endif
extern vm_offset_t pmap_map(
vm_offset_t virt,
vm_map_offset_t start,
struct pmap *pmap,
vm_offset_t *listp,
int space);
-
+extern void x86_filter_TLB_coherency_interrupts(boolean_t);
+#ifdef __i386__
extern void pmap_commpage32_init(
vm_offset_t kernel,
vm_offset_t user,
vm_map_offset_t user,
int count);
+#endif
+/*
+ * Get cache attributes (as pagetable bits) for the specified phys page
+ */
+extern unsigned pmap_get_cache_attributes(ppnum_t);
+#if NCOPY_WINDOWS > 0
extern struct cpu_pmap *pmap_cpu_alloc(
boolean_t is_boot_cpu);
extern void pmap_cpu_free(
struct cpu_pmap *cp);
+#endif
extern void pmap_map_block(
pmap_t pmap,
extern void invalidate_icache(vm_offset_t addr, unsigned cnt, int phys);
extern void flush_dcache(vm_offset_t addr, unsigned count, int phys);
extern ppnum_t pmap_find_phys(pmap_t map, addr64_t va);
-extern void pmap_sync_page_data_phys(ppnum_t pa);
-extern void pmap_sync_page_attributes_phys(ppnum_t pa);
-extern kern_return_t pmap_nest(pmap_t grand, pmap_t subord, addr64_t vstart, addr64_t nstart, uint64_t size);
-extern kern_return_t pmap_unnest(pmap_t grand, addr64_t vaddr);
-extern void pmap_map_sharedpage(task_t task, pmap_t pmap);
-extern void pmap_unmap_sharedpage(pmap_t pmap);
+extern void pmap_cpu_init(void);
extern void pmap_disable_NX(pmap_t pmap);
+#ifdef __i386__
extern void pmap_set_4GB_pagezero(pmap_t pmap);
extern void pmap_clear_4GB_pagezero(pmap_t pmap);
extern void pmap_load_kernel_cr3(void);
extern vm_offset_t pmap_high_map(pt_entry_t, enum high_cpu_types);
extern vm_offset_t pmap_cpu_high_shared_remap(int, enum high_cpu_types, vm_offset_t, int);
extern vm_offset_t pmap_high_shared_remap(enum high_fixed_addresses, vm_offset_t, int);
+#endif
-extern void pt_fake_zone_info(int *, vm_size_t *, vm_size_t *, vm_size_t *, vm_size_t *, int *, int *);
-
-
+extern void pt_fake_zone_init(int);
+extern void pt_fake_zone_info(int *, vm_size_t *, vm_size_t *, vm_size_t *, vm_size_t *,
+ uint64_t *, int *, int *, int *);
+extern void pmap_pagetable_corruption_msg_log(int (*)(const char * fmt, ...)__printflike(1,2));
/*
* Macros for speed.
#include <kern/spl.h>
-#if defined(PMAP_ACTIVATE_KERNEL)
-#undef PMAP_ACTIVATE_KERNEL
-#undef PMAP_DEACTIVATE_KERNEL
-#undef PMAP_ACTIVATE_USER
-#undef PMAP_DEACTIVATE_USER
-#endif
-
-
-#define PMAP_ACTIVATE_KERNEL(my_cpu) { \
- spl_t spl; \
- \
- spl = splhigh(); \
- if (current_cpu_datap()->cpu_tlb_invalid) \
- process_pmap_updates(); \
- splx(spl); \
-}
-
-#define PMAP_DEACTIVATE_KERNEL(my_cpu) { \
- spl_t spl; \
- \
- spl = splhigh(); \
- process_pmap_updates(); \
- splx(spl); \
-}
-
-
-#define PMAP_ACTIVATE_MAP(map, my_cpu) { \
+
+#define PMAP_ACTIVATE_MAP(map, thread) { \
register pmap_t tpmap; \
\
tpmap = vm_map_pmap(map); \
- set_dirbase(tpmap, my_cpu); \
-}
-
-#define PMAP_DEACTIVATE_MAP(map, my_cpu) \
- if (current_cpu_datap()->cpu_task_map == TASK_MAP_64BIT_SHARED) \
- pmap_load_kernel_cr3();
-
-#define PMAP_ACTIVATE_USER(th, my_cpu) { \
- spl_t spl; \
- \
- spl = splhigh(); \
- PMAP_ACTIVATE_MAP(th->map, my_cpu) \
- splx(spl); \
+ set_dirbase(tpmap, thread); \
}
-#define PMAP_DEACTIVATE_USER(th, my_cpu)
+#ifdef __i386__
+#define PMAP_DEACTIVATE_MAP(map, thread) \
+ if (vm_map_pmap(map)->pm_task_map == TASK_MAP_64BIT_SHARED) \
+ pmap_load_kernel_cr3();
+#elif defined(__x86_64__)
+#define PMAP_DEACTIVATE_MAP(map, thread) \
+ pmap_assert(pmap_pcid_ncpus ? (pcid_for_pmap_cpu_tuple(map->pmap, cpu_number()) == (get_cr3_raw() & 0xFFF)) : TRUE);
+#else
+#define PMAP_DEACTIVATE_MAP(map, thread)
+#endif
+#if defined(__i386__)
#define PMAP_SWITCH_CONTEXT(old_th, new_th, my_cpu) { \
spl_t spl; \
\
need_flush = 0; \
spl = splhigh(); \
- if (old_th->map != new_th->map) { \
- PMAP_DEACTIVATE_MAP(old_th->map, my_cpu); \
- PMAP_ACTIVATE_MAP(new_th->map, my_cpu); \
+ if ((old_th->map != new_th->map) || (new_th->task != old_th->task)) { \
+ PMAP_DEACTIVATE_MAP(old_th->map, old_th); \
+ PMAP_ACTIVATE_MAP(new_th->map, new_th); \
} \
kpdp = current_cpu_datap()->cpu_copywindow_pdp; \
for (i = 0; i < NCOPY_WINDOWS; i++) { \
if (new_th->machine.copy_window[i].user_base != (user_addr_t)-1) { \
updp = pmap_pde(new_th->map->pmap, \
new_th->machine.copy_window[i].user_base);\
- pmap_store_pte(kpdp, updp ? *updp : 0); \
+ pmap_store_pte(kpdp, updp ? *updp : 0); \
} \
kpdp++; \
} \
else \
new_th->machine.copyio_state = WINDOWS_DIRTY; \
if (new_th->machine.physwindow_pte) { \
- pmap_store_pte((current_cpu_datap()->cpu_physwindow_ptep), \
- new_th->machine.physwindow_pte); \
+ pmap_store_pte((current_cpu_datap()->cpu_physwindow_ptep), \
+ new_th->machine.physwindow_pte); \
if (need_flush == 0) \
invlpg((uintptr_t)current_cpu_datap()->cpu_physwindow_base);\
} \
flush_tlb(); \
}
+#else /* __x86_64__ */
+#define PMAP_SWITCH_CONTEXT(old_th, new_th, my_cpu) { \
+ \
+ pmap_assert(ml_get_interrupts_enabled() == FALSE); \
+ if (old_th->map != new_th->map) { \
+ PMAP_DEACTIVATE_MAP(old_th->map, old_th); \
+ PMAP_ACTIVATE_MAP(new_th->map, new_th); \
+ } \
+}
+#endif /* __i386__ */
+
+#if NCOPY_WINDOWS > 0
#define PMAP_SWITCH_USER(th, new_map, my_cpu) { \
spl_t spl; \
\
spl = splhigh(); \
- PMAP_DEACTIVATE_MAP(th->map, my_cpu); \
+ PMAP_DEACTIVATE_MAP(th->map, th); \
th->map = new_map; \
- PMAP_ACTIVATE_MAP(th->map, my_cpu); \
+ PMAP_ACTIVATE_MAP(th->map, th); \
splx(spl); \
- inval_copy_windows(th); \
+ inval_copy_windows(th); \
}
+#else
+#define PMAP_SWITCH_USER(th, new_map, my_cpu) { \
+ spl_t spl; \
+ \
+ spl = splhigh(); \
+ PMAP_DEACTIVATE_MAP(th->map, th); \
+ th->map = new_map; \
+ PMAP_ACTIVATE_MAP(th->map, th); \
+ splx(spl); \
+}
+#endif
/*
* Marking the current cpu's cr3 inactive is achieved by setting its lsb.
* Marking the current cpu's cr3 active once more involves clearng this bit.
* Note that valid page tables are page-aligned and so the bottom 12 bits
- * are noramlly zero.
+ * are normally zero, modulo PCID.
* We can only mark the current cpu active/inactive but we can test any cpu.
*/
#define CPU_CR3_MARK_INACTIVE() \
#define CPU_CR3_IS_ACTIVE(cpu) \
((cpu_datap(cpu)->cpu_active_cr3 & 1) == 0)
-#define CPU_GET_ACTIVE_CR3(cpu) \
- (cpu_datap(cpu)->cpu_active_cr3 & ~1)
+#define CPU_GET_ACTIVE_CR3(cpu) \
+ (cpu_datap(cpu)->cpu_active_cr3 & ~1)
+
+#define CPU_GET_TASK_CR3(cpu) \
+ (cpu_datap(cpu)->cpu_task_cr3)
+/*
+ * Mark this cpu idle, and remove it from the active set,
+ * since it is not actively using any pmap. Signal_cpus
+ * will notice that it is idle, and avoid signaling it,
+ * but will queue the update request for when the cpu
+ * becomes active.
+ */
+#if defined(__x86_64__)
+#define MARK_CPU_IDLE(my_cpu) { \
+ assert(ml_get_interrupts_enabled() == FALSE); \
+ CPU_CR3_MARK_INACTIVE(); \
+ __asm__ volatile("mfence"); \
+}
+#else /* __i386__ native */
#define MARK_CPU_IDLE(my_cpu) { \
+ assert(ml_get_interrupts_enabled() == FALSE); \
/* \
* Mark this cpu idle, and remove it from the active set, \
* since it is not actively using any pmap. Signal_cpus \
* but will queue the update request for when the cpu \
* becomes active. \
*/ \
- int s = splhigh(); \
if (!cpu_mode_is64bit() || no_shared_cr3) \
process_pmap_updates(); \
else \
pmap_load_kernel_cr3(); \
CPU_CR3_MARK_INACTIVE(); \
__asm__ volatile("mfence"); \
- splx(s); \
}
+#endif /* __i386__ */
#define MARK_CPU_ACTIVE(my_cpu) { \
- \
- int s = splhigh(); \
+ assert(ml_get_interrupts_enabled() == FALSE); \
/* \
* If a kernel_pmap update was requested while this cpu \
* was idle, process it as if we got the interrupt. \
\
if (current_cpu_datap()->cpu_tlb_invalid) \
process_pmap_updates(); \
- splx(s); \
}
#define PMAP_CONTEXT(pmap, thread)
#define pmap_resident_count(pmap) ((pmap)->stats.resident_count)
+#define pmap_resident_max(pmap) ((pmap)->stats.resident_max)
#define pmap_copy(dst_pmap,src_pmap,dst_addr,len,src_addr)
#define pmap_attribute(pmap,addr,size,attr,value) \
(KERN_INVALID_ADDRESS)
#define pmap_attribute_cache_sync(addr,size,attr,value) \
(KERN_INVALID_ADDRESS)
+#define MACHINE_PMAP_IS_EMPTY 1
+extern boolean_t pmap_is_empty(pmap_t pmap,
+ vm_map_offset_t start,
+ vm_map_offset_t end);
+
+#define MACHINE_BOOTSTRAPPTD 1 /* Static bootstrap page-tables */
+
+kern_return_t
+pmap_permissions_verify(pmap_t, vm_map_t, vm_offset_t, vm_offset_t);
+
#endif /* ASSEMBLER */
projects / apple / xnu.git / blobdiff