xnu-1699.22.73.tar.gz

[apple/xnu.git] / osfmk / i386 / commpage / commpage.c

diff --git a/osfmk/i386/commpage/commpage.c b/osfmk/i386/commpage/commpage.c
index b2bd5af50c07347ce031452dd3b3ed610e18096b..cc52576c5bf3ebfc0a5452ad05f324065f5802c2 100644 (file)
--- a/osfmk/i386/commpage/commpage.c
+++ b/osfmk/i386/commpage/commpage.c
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2010 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -48,46 +48,53 @@
 #include <mach/mach_types.h>
 #include <mach/machine.h>
 #include <mach/vm_map.h>
 #include <mach/mach_types.h>
 #include <mach/machine.h>
 #include <mach/vm_map.h>

-#include <i386/machine_routines.h>
-#include <i386/misc_protos.h>
+#include <mach/mach_vm.h>
+#include <mach/machine.h>
+#include <i386/cpuid.h>

 #include <i386/tsc.h>
 #include <i386/tsc.h>

+#include <i386/rtclock_protos.h>

 #include <i386/cpu_data.h>
 #include <i386/cpu_data.h>

+#include <i386/machine_routines.h>
+#include <i386/misc_protos.h>
+#include <i386/cpuid.h>

 #include <machine/cpu_capabilities.h>
 #include <machine/commpage.h>
 #include <machine/pmap.h>
 #include <vm/vm_kern.h>
 #include <vm/vm_map.h>
 #include <machine/cpu_capabilities.h>
 #include <machine/commpage.h>
 #include <machine/pmap.h>
 #include <vm/vm_kern.h>
 #include <vm/vm_map.h>

+

 #include <ipc/ipc_port.h>
 
 #include <kern/page_decrypt.h>
 #include <ipc/ipc_port.h>
 
 #include <kern/page_decrypt.h>

+#include <kern/processor.h>

 
 /* the lists of commpage routines are in commpage_asm.s  */
 extern commpage_descriptor*    commpage_32_routines[];
 extern commpage_descriptor*    commpage_64_routines[];
 
 
 /* the lists of commpage routines are in commpage_asm.s  */
 extern commpage_descriptor*    commpage_32_routines[];
 extern commpage_descriptor*    commpage_64_routines[];
 

-/* translated commpage descriptors from commpage_sigs.c  */
-extern commpage_descriptor sigdata_descriptor;
-extern commpage_descriptor *ba_descriptors[];
-

 extern vm_map_t        commpage32_map; // the shared submap, set up in vm init
 extern vm_map_t        commpage64_map; // the shared submap, set up in vm init
 
 char   *commPagePtr32 = NULL;          // virtual addr in kernel map of 32-bit commpage
 char   *commPagePtr64 = NULL;          // ...and of 64-bit commpage
 extern vm_map_t        commpage32_map; // the shared submap, set up in vm init
 extern vm_map_t        commpage64_map; // the shared submap, set up in vm init
 
 char   *commPagePtr32 = NULL;          // virtual addr in kernel map of 32-bit commpage
 char   *commPagePtr64 = NULL;          // ...and of 64-bit commpage

-int     _cpu_capabilities = 0;          // define the capability vector
+uint32_t     _cpu_capabilities = 0;          // define the capability vector

 
 int    noVMX = 0;              /* if true, do not set kHasAltivec in ppc _cpu_capabilities */
 
 
 int    noVMX = 0;              /* if true, do not set kHasAltivec in ppc _cpu_capabilities */
 

-static uintptr_t next;                 // next available byte in comm page
-static int             cur_routine;            // comm page address of "current" routine
-static int             matched;                // true if we've found a match for "current" routine
+typedef uint32_t commpage_address_t;
+
+static commpage_address_t      next;                   // next available address in comm page
+static commpage_address_t      cur_routine;            // comm page address of "current" routine
+static boolean_t               matched;                // true if we've found a match for "current" routine

 
 static char    *commPagePtr;           // virtual addr in kernel map of commpage we are working on
 
 static char    *commPagePtr;           // virtual addr in kernel map of commpage we are working on

-static size_t  commPageBaseOffset;     // add to 32-bit runtime address to get offset in commpage
+static commpage_address_t      commPageBaseOffset; // subtract from 32-bit runtime address to get offset in virtual commpage in kernel map

 
 static commpage_time_data      *time_data32 = NULL;
 static commpage_time_data      *time_data64 = NULL;
 
 
 static commpage_time_data      *time_data32 = NULL;
 static commpage_time_data      *time_data64 = NULL;
 

+decl_simple_lock_data(static,commpage_active_cpus_lock);
+

 /* Allocate the commpage and add to the shared submap created by vm:
  *     1. allocate a page in the kernel map (RW)
  *     2. wire it down
 /* Allocate the commpage and add to the shared submap created by vm:
  *     1. allocate a page in the kernel map (RW)
  *     2. wire it down


@@ -149,17 +156,24 @@ commpage_allocate(
                panic("cannot map commpage");
 
        ipc_port_release(handle);
                panic("cannot map commpage");
 
        ipc_port_release(handle);

-
-       return (void*) kernel_addr;                     // return address in kernel map
+       
+       // Initialize the text section of the commpage with INT3
+       char *commpage_ptr = (char*)(intptr_t)kernel_addr;
+       vm_size_t i;
+       for( i = _COMM_PAGE_TEXT_START - _COMM_PAGE_START_ADDRESS; i < size; i++ )
+               // This is the hex for the X86 opcode INT3
+               commpage_ptr[i] = 0xCC;
+
+       return (void*)(intptr_t)kernel_addr;                     // return address in kernel map

 }
 
 /* Get address (in kernel map) of a commpage field. */
 
 static void*
 commpage_addr_of(
 }
 
 /* Get address (in kernel map) of a commpage field. */
 
 static void*
 commpage_addr_of(

-    int     addr_at_runtime )
+    commpage_address_t     addr_at_runtime )

 {
 {

-    return  (void*) ((uintptr_t)commPagePtr + addr_at_runtime - commPageBaseOffset);
+       return  (void*) ((uintptr_t)commPagePtr + (addr_at_runtime - commPageBaseOffset));

 }
 
 /* Determine number of CPUs on this system.  We cannot rely on
 }
 
 /* Determine number of CPUs on this system.  We cannot rely on


@@ -185,7 +199,7 @@ commpage_cpus( void )
 static void
 commpage_init_cpu_capabilities( void )
 {
 static void
 commpage_init_cpu_capabilities( void )
 {

-       int bits;
+       uint32_t bits;

        int cpus;
        ml_cpu_info_t cpu_info;
 
        int cpus;
        ml_cpu_info_t cpu_info;
 


@@ -193,6 +207,9 @@ commpage_init_cpu_capabilities( void )
        ml_cpu_get_info(&cpu_info);
        
        switch (cpu_info.vector_unit) {
        ml_cpu_get_info(&cpu_info);
        
        switch (cpu_info.vector_unit) {

+               case 9:
+                       bits |= kHasAVX1_0;
+                       /* fall thru */

                case 8:
                        bits |= kHasSSE4_2;
                        /* fall thru */
                case 8:
                        bits |= kHasSSE4_2;
                        /* fall thru */


@@ -244,6 +261,9 @@ commpage_init_cpu_capabilities( void )
        if (tscFreq <= SLOW_TSC_THRESHOLD)      /* is TSC too slow for _commpage_nanotime?  */
                bits |= kSlow;
 
        if (tscFreq <= SLOW_TSC_THRESHOLD)      /* is TSC too slow for _commpage_nanotime?  */
                bits |= kSlow;
 

+       if (cpuid_features() & CPUID_FEATURE_AES)
+               bits |= kHasAES;
+

        _cpu_capabilities = bits;               // set kernel version for use by drivers etc
 }
 
        _cpu_capabilities = bits;               // set kernel version for use by drivers etc
 }
 


@@ -257,53 +277,18 @@ _get_cpu_capabilities(void)
 
 static void
 commpage_stuff(
 
 static void
 commpage_stuff(

-    int        address,
+    commpage_address_t         address,

     const void         *source,
     int        length  )
 {    
     void       *dest = commpage_addr_of(address);
     
     const void         *source,
     int        length  )
 {    
     void       *dest = commpage_addr_of(address);
     

-    if ((uintptr_t)dest < next)
-        panic("commpage overlap at address 0x%x, %p < 0x%lx", address, dest, next);
+    if (address < next)
+       panic("commpage overlap at address 0x%p, 0x%x < 0x%x", dest, address, next);

     
     bcopy(source,dest,length);
     
     
     bcopy(source,dest,length);
     

-    next = ((uintptr_t)dest + length);
-}
-
-static void
-commpage_stuff_swap(
-       int     address,
-       void    *source,
-       int     length,
-       int     legacy )
-{
-       if ( legacy ) {
-               void *dest = commpage_addr_of(address);
-               dest = (void *)((uintptr_t) dest + _COMM_PAGE_SIGS_OFFSET);
-               switch (length) {
-                       case 2:
-                               OSWriteSwapInt16(dest, 0, *(uint16_t *)source);
-                               break;
-                       case 4:
-                               OSWriteSwapInt32(dest, 0, *(uint32_t *)source);
-                               break;
-                       case 8:
-                               OSWriteSwapInt64(dest, 0, *(uint64_t *)source);
-                               break;
-               }
-       }
-}
-
-static void
-commpage_stuff2(
-       int     address,
-       void    *source,
-       int     length,
-       int     legacy )
-{
-       commpage_stuff_swap(address, source, length, legacy);
-       commpage_stuff(address, source, length);
+    next = address + length;

 }
 
 /* Copy a routine into comm page if it matches running machine.
 }
 
 /* Copy a routine into comm page if it matches running machine.


@@ -312,11 +297,11 @@ static void
 commpage_stuff_routine(
     commpage_descriptor        *rd     )
 {
 commpage_stuff_routine(
     commpage_descriptor        *rd     )
 {

-    int                must,cant;
+    uint32_t           must,cant;

     
     if (rd->commpage_address != cur_routine) {
         if ((cur_routine!=0) && (matched==0))
     
     if (rd->commpage_address != cur_routine) {
         if ((cur_routine!=0) && (matched==0))

-            panic("commpage no match for last, next address %08lx", rd->commpage_address);
+            panic("commpage no match for last, next address %08x", rd->commpage_address);

         cur_routine = rd->commpage_address;
         matched = 0;
     }
         cur_routine = rd->commpage_address;
         matched = 0;
     }


@@ -326,7 +311,7 @@ commpage_stuff_routine(
     
     if ((must == rd->musthave) && (cant == 0)) {
         if (matched)
     
     if ((must == rd->musthave) && (cant == 0)) {
         if (matched)

-            panic("commpage multiple matches for address %08lx", rd->commpage_address);
+            panic("commpage multiple matches for address %08x", rd->commpage_address);

         matched = 1;
         
         commpage_stuff(rd->commpage_address,rd->code_address,rd->code_length);
         matched = 1;
         
         commpage_stuff(rd->commpage_address,rd->code_address,rd->code_length);


@@ -334,8 +319,6 @@ commpage_stuff_routine(
 }
 
 /* Fill in the 32- or 64-bit commpage.  Called once for each.
 }
 
 /* Fill in the 32- or 64-bit commpage.  Called once for each.

- * The 32-bit ("legacy") commpage has a bunch of stuff added to it
- * for translated processes, some of which is byte-swapped.

  */
 
 static void
  */
 
 static void


@@ -343,59 +326,55 @@ commpage_populate_one(
        vm_map_t        submap,         // commpage32_map or compage64_map
        char **         kernAddressPtr, // &commPagePtr32 or &commPagePtr64
        size_t          area_used,      // _COMM_PAGE32_AREA_USED or _COMM_PAGE64_AREA_USED
        vm_map_t        submap,         // commpage32_map or compage64_map
        char **         kernAddressPtr, // &commPagePtr32 or &commPagePtr64
        size_t          area_used,      // _COMM_PAGE32_AREA_USED or _COMM_PAGE64_AREA_USED

-       size_t          base_offset,    // will become commPageBaseOffset
+       commpage_address_t base_offset, // will become commPageBaseOffset

        commpage_descriptor** commpage_routines, // list of routine ptrs for this commpage
        commpage_descriptor** commpage_routines, // list of routine ptrs for this commpage

-       boolean_t       legacy,         // true if 32-bit commpage

        commpage_time_data** time_data, // &time_data32 or &time_data64
        const char*     signature )     // "commpage 32-bit" or "commpage 64-bit"
 {
        commpage_time_data** time_data, // &time_data32 or &time_data64
        const char*     signature )     // "commpage 32-bit" or "commpage 64-bit"
 {

+       uint8_t c1;

        short   c2;
        short   c2;

-       static double   two52 = 1048576.0 * 1048576.0 * 4096.0; // 2**52
-       static double   ten6 = 1000000.0;                       // 10**6
+       int         c4;
+       uint64_t c8;
+       uint32_t        cfamily;

        commpage_descriptor **rd;
        short   version = _COMM_PAGE_THIS_VERSION;
        commpage_descriptor **rd;
        short   version = _COMM_PAGE_THIS_VERSION;

-       int             swapcaps;

 
 

-       next = (uintptr_t) NULL;
+       next = 0;

        cur_routine = 0;
        commPagePtr = (char *)commpage_allocate( submap, (vm_size_t) area_used );
        *kernAddressPtr = commPagePtr;                          // save address either in commPagePtr32 or 64
        commPageBaseOffset = base_offset;
        cur_routine = 0;
        commPagePtr = (char *)commpage_allocate( submap, (vm_size_t) area_used );
        *kernAddressPtr = commPagePtr;                          // save address either in commPagePtr32 or 64
        commPageBaseOffset = base_offset;

-       
+

        *time_data = commpage_addr_of( _COMM_PAGE_TIME_DATA_START );
 
        /* Stuff in the constants.  We move things into the comm page in strictly
        * ascending order, so we can check for overlap and panic if so.
        */
        *time_data = commpage_addr_of( _COMM_PAGE_TIME_DATA_START );
 
        /* Stuff in the constants.  We move things into the comm page in strictly
        * ascending order, so we can check for overlap and panic if so.
        */

-       commpage_stuff(_COMM_PAGE_SIGNATURE,signature,strlen(signature));
-       commpage_stuff2(_COMM_PAGE_VERSION,&version,sizeof(short),legacy);
+       commpage_stuff(_COMM_PAGE_SIGNATURE,signature,(int)strlen(signature));
+       commpage_stuff(_COMM_PAGE_VERSION,&version,sizeof(short));

        commpage_stuff(_COMM_PAGE_CPU_CAPABILITIES,&_cpu_capabilities,sizeof(int));
 
        commpage_stuff(_COMM_PAGE_CPU_CAPABILITIES,&_cpu_capabilities,sizeof(int));
 

-       /* excuse our magic constants, we cannot include ppc/cpu_capabilities.h */
-       /* always set kCache32 and kDcbaAvailable */
-       swapcaps =  0x44;
-       if ( _cpu_capabilities & kUP )
-               swapcaps |= (kUP + (1 << kNumCPUsShift));
-       else
-               swapcaps |= 2 << kNumCPUsShift; /* limit #cpus to 2 */
-       if ( ! noVMX )          /* if rosetta will be emulating altivec... */
-               swapcaps |= 0x101;      /* ...then set kHasAltivec and kDataStreamsAvailable too */
-       commpage_stuff_swap(_COMM_PAGE_CPU_CAPABILITIES, &swapcaps, sizeof(int), legacy);
-       c2 = 32;
-       commpage_stuff_swap(_COMM_PAGE_CACHE_LINESIZE,&c2,2,legacy);
-
-       if (_cpu_capabilities & kCache32)
-               c2 = 32;
-       else if (_cpu_capabilities & kCache64)
+       c2 = 32;  // default
+       if (_cpu_capabilities & kCache64)

                c2 = 64;
        else if (_cpu_capabilities & kCache128)
                c2 = 128;
        commpage_stuff(_COMM_PAGE_CACHE_LINESIZE,&c2,2);
                c2 = 64;
        else if (_cpu_capabilities & kCache128)
                c2 = 128;
        commpage_stuff(_COMM_PAGE_CACHE_LINESIZE,&c2,2);

+       
+       c4 = MP_SPIN_TRIES;
+       commpage_stuff(_COMM_PAGE_SPIN_COUNT,&c4,4);

 
 

-       if ( legacy ) {
-               commpage_stuff2(_COMM_PAGE_2_TO_52,&two52,8,legacy);
-               commpage_stuff2(_COMM_PAGE_10_TO_6,&ten6,8,legacy);
-       }
+       /* machine_info valid after ml_get_max_cpus() */
+       c1 = machine_info.physical_cpu_max;
+       commpage_stuff(_COMM_PAGE_PHYSICAL_CPUS,&c1,1);
+       c1 = machine_info.logical_cpu_max;
+       commpage_stuff(_COMM_PAGE_LOGICAL_CPUS,&c1,1);
+
+       c8 = ml_cpu_cache_size(0);
+       commpage_stuff(_COMM_PAGE_MEMORY_SIZE, &c8, 8);
+
+       cfamily = cpuid_info()->cpuid_cpufamily;
+       commpage_stuff(_COMM_PAGE_CPUFAMILY, &cfamily, 4);

 
        for( rd = commpage_routines; *rd != NULL ; rd++ )
                commpage_stuff_routine(*rd);
 
        for( rd = commpage_routines; *rd != NULL ; rd++ )
                commpage_stuff_routine(*rd);


@@ -403,17 +382,9 @@ commpage_populate_one(
        if (!matched)
                panic("commpage no match on last routine");
 
        if (!matched)
                panic("commpage no match on last routine");
 

-       if (next > (uintptr_t)_COMM_PAGE_END)
-               panic("commpage overflow: next = 0x%08lx, commPagePtr = 0x%08lx", next, (uintptr_t)commPagePtr);
-
-       if ( legacy ) {
-               next = (uintptr_t) NULL;
-               for( rd = ba_descriptors; *rd != NULL ; rd++ )
-                       commpage_stuff_routine(*rd);
+       if (next > _COMM_PAGE_END)
+               panic("commpage overflow: next = 0x%08x, commPagePtr = 0x%p", next, commPagePtr);

 
 

-               next = (uintptr_t) NULL;
-               commpage_stuff_routine(&sigdata_descriptor);
-       }       

 }
 
 
 }
 
 


@@ -434,27 +405,31 @@ commpage_populate( void )
                                _COMM_PAGE32_AREA_USED,
                                _COMM_PAGE32_BASE_ADDRESS,
                                commpage_32_routines, 
                                _COMM_PAGE32_AREA_USED,
                                _COMM_PAGE32_BASE_ADDRESS,
                                commpage_32_routines, 

-                               TRUE,                   /* legacy (32-bit) commpage */

                                &time_data32,
                                "commpage 32-bit");
                                &time_data32,
                                "commpage 32-bit");

+#ifndef __LP64__

        pmap_commpage32_init((vm_offset_t) commPagePtr32, _COMM_PAGE32_BASE_ADDRESS, 
                           _COMM_PAGE32_AREA_USED/INTEL_PGBYTES);
        pmap_commpage32_init((vm_offset_t) commPagePtr32, _COMM_PAGE32_BASE_ADDRESS, 
                           _COMM_PAGE32_AREA_USED/INTEL_PGBYTES);

-                          
+#endif                    

        time_data64 = time_data32;                      /* if no 64-bit commpage, point to 32-bit */
 
        if (_cpu_capabilities & k64Bit) {
                commpage_populate_one(  commpage64_map, 
                                        &commPagePtr64,
                                        _COMM_PAGE64_AREA_USED,
        time_data64 = time_data32;                      /* if no 64-bit commpage, point to 32-bit */
 
        if (_cpu_capabilities & k64Bit) {
                commpage_populate_one(  commpage64_map, 
                                        &commPagePtr64,
                                        _COMM_PAGE64_AREA_USED,

-                                       _COMM_PAGE32_START_ADDRESS, /* because kernel is built 32-bit */
+                                       _COMM_PAGE32_START_ADDRESS, /* commpage address are relative to 32-bit commpage placement */

                                        commpage_64_routines, 
                                        commpage_64_routines, 

-                                       FALSE,          /* not a legacy commpage */

                                        &time_data64,
                                        "commpage 64-bit");
                                        &time_data64,
                                        "commpage 64-bit");

+#ifndef __LP64__

                pmap_commpage64_init((vm_offset_t) commPagePtr64, _COMM_PAGE64_BASE_ADDRESS, 
                                   _COMM_PAGE64_AREA_USED/INTEL_PGBYTES);
                pmap_commpage64_init((vm_offset_t) commPagePtr64, _COMM_PAGE64_BASE_ADDRESS, 
                                   _COMM_PAGE64_AREA_USED/INTEL_PGBYTES);

+#endif

        }
 
        }
 

+       simple_lock_init(&commpage_active_cpus_lock, 0);
+
+       commpage_update_active_cpus();

        rtc_nanotime_init_commpage();
 }
 
        rtc_nanotime_init_commpage();
 }
 


@@ -555,3 +530,111 @@ commpage_disable_timestamp( void )
        p32->gtod_generation = next_gen;        /* mark data as valid */
        p64->gtod_generation = next_gen;
 }
        p32->gtod_generation = next_gen;        /* mark data as valid */
        p64->gtod_generation = next_gen;
 }

+
+
+/* Update _COMM_PAGE_MEMORY_PRESSURE.  Called periodically from vm's compute_memory_pressure()  */
+
+void
+commpage_set_memory_pressure(
+       unsigned int    pressure )
+{
+       char        *cp;
+       uint32_t    *ip;
+       
+       cp = commPagePtr32;
+       if ( cp ) {
+               cp += (_COMM_PAGE_MEMORY_PRESSURE - _COMM_PAGE32_BASE_ADDRESS);
+               ip = (uint32_t*) cp;
+               *ip = (uint32_t) pressure;
+       }
+       
+       cp = commPagePtr64;
+       if ( cp ) {
+               cp += (_COMM_PAGE_MEMORY_PRESSURE - _COMM_PAGE32_START_ADDRESS);
+               ip = (uint32_t*) cp;
+               *ip = (uint32_t) pressure;
+       }
+
+}
+
+
+/* Update _COMM_PAGE_SPIN_COUNT.  We might want to reduce when running on a battery, etc. */
+
+void
+commpage_set_spin_count(
+       unsigned int    count )
+{
+       char        *cp;
+       uint32_t    *ip;
+       
+       if (count == 0)     /* we test for 0 after decrement, not before */
+           count = 1;
+           
+       cp = commPagePtr32;
+       if ( cp ) {
+               cp += (_COMM_PAGE_SPIN_COUNT - _COMM_PAGE32_BASE_ADDRESS);
+               ip = (uint32_t*) cp;
+               *ip = (uint32_t) count;
+       }
+       
+       cp = commPagePtr64;
+       if ( cp ) {
+               cp += (_COMM_PAGE_SPIN_COUNT - _COMM_PAGE32_START_ADDRESS);
+               ip = (uint32_t*) cp;
+               *ip = (uint32_t) count;
+       }
+
+}
+
+/* Updated every time a logical CPU goes offline/online */
+void
+commpage_update_active_cpus(void)
+{
+       char        *cp;
+       volatile uint8_t    *ip;
+       
+       /* At least 32-bit commpage must be initialized */
+       if (!commPagePtr32)
+               return;
+
+       simple_lock(&commpage_active_cpus_lock);
+
+       cp = commPagePtr32;
+       cp += (_COMM_PAGE_ACTIVE_CPUS - _COMM_PAGE32_BASE_ADDRESS);
+       ip = (volatile uint8_t*) cp;
+       *ip = (uint8_t) processor_avail_count;
+       
+       cp = commPagePtr64;
+       if ( cp ) {
+               cp += (_COMM_PAGE_ACTIVE_CPUS - _COMM_PAGE32_START_ADDRESS);
+               ip = (volatile uint8_t*) cp;
+               *ip = (uint8_t) processor_avail_count;
+       }
+
+       simple_unlock(&commpage_active_cpus_lock);
+}
+
+
+/* Check to see if a given address is in the Preemption Free Zone (PFZ) */
+
+uint32_t
+commpage_is_in_pfz32(uint32_t addr32)
+{
+       if ( (addr32 >= _COMM_PAGE_PFZ_START) && (addr32 < _COMM_PAGE_PFZ_END)) {
+               return 1;
+       }
+       else
+               return 0;
+}
+
+uint32_t
+commpage_is_in_pfz64(addr64_t addr64)
+{
+       if ( (addr64 >= _COMM_PAGE_32_TO_64(_COMM_PAGE_PFZ_START))
+            && (addr64 <  _COMM_PAGE_32_TO_64(_COMM_PAGE_PFZ_END))) {
+               return 1;
+       }
+       else
+               return 0;
+}
+