/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
*/
#include <sys/errno.h>
-#include <kern/host.h>
+
#include <mach/mach_types.h>
-#include <vm/vm_map.h>
-#include <vm/vm_kern.h>
-#include <vm/vm_pageout.h>
+#include <mach/mach_traps.h>
+#include <mach/host_priv.h>
#include <mach/kern_return.h>
+#include <mach/memory_object_control.h>
#include <mach/memory_object_types.h>
#include <mach/port.h>
#include <mach/policy.h>
-#include <ipc/ipc_port.h>
-#include <ipc/ipc_space.h>
+#include <mach/upl.h>
+#include <mach/thread_act.h>
+
+#include <kern/host.h>
#include <kern/thread.h>
-#include <vm/memory_object.h>
-#include <vm/vm_pageout.h>
-#include <libkern/OSAtomic.h>
+#include <ipc/ipc_port.h>
+#include <ipc/ipc_space.h>
#include <default_pager/default_pager_types.h>
+#include <default_pager/default_pager_object_server.h>
+
+#include <vm/vm_map.h>
+#include <vm/vm_kern.h>
+#include <vm/vm_pageout.h>
+#include <vm/memory_object.h>
+#include <vm/vm_pageout.h>
+#include <vm/vm_protos.h>
/* BSD VM COMPONENT INTERFACES */
int
return(map->hdr.nentries);
}
+mach_vm_offset_t
+mach_get_vm_start(vm_map_t map)
+{
+ return( vm_map_first_entry(map)->vme_start);
+}
+
+mach_vm_offset_t
+mach_get_vm_end(vm_map_t map)
+{
+ return( vm_map_last_entry(map)->vme_end);
+}
+
/*
- *
+ * Legacy routines to get the start and end for a vm_map_t. They
+ * return them in the vm_offset_t format. So, they should only be
+ * called on maps that are the same size as the kernel map for
+ * accurate results.
*/
vm_offset_t
-get_map_start(
+get_vm_start(
vm_map_t map)
{
- return(vm_map_first_entry(map)->vme_start);
+ return(CAST_DOWN(vm_offset_t, vm_map_first_entry(map)->vme_start));
}
-/*
- *
- */
vm_offset_t
-get_map_end(
+get_vm_end(
vm_map_t map)
{
- return(vm_map_last_entry(map)->vme_end);
+ return(CAST_DOWN(vm_offset_t, vm_map_last_entry(map)->vme_end));
}
/*
/* until component support available */
int vnode_pager_workaround;
-typedef int vnode_port_t;
-
typedef struct vnode_pager {
int *pager; /* pager workaround pointer */
unsigned int pager_ikot; /* JMM: fake ip_kotype() */
unsigned int ref_count; /* reference count */
memory_object_control_t control_handle; /* mem object control handle */
- vnode_port_t vnode_handle; /* vnode handle */
+ struct vnode *vnode_handle; /* vnode handle */
} *vnode_pager_t;
ipc_port_t
-trigger_name_to_port(
+trigger_name_to_port( /* forward */
mach_port_t);
-void
-vnode_pager_bootstrap(
- void);
-
-void
-vnode_pager_alloc_map(
- void);
-
-memory_object_t
-vnode_pager_setup(
- vnode_port_t,
- memory_object_t);
-
-
-kern_return_t
-vnode_pager_init(
- memory_object_t,
- memory_object_control_t,
- vm_size_t);
-
kern_return_t
-vnode_pager_get_object_size(
- memory_object_t,
- memory_object_offset_t *);
-
-kern_return_t
-vnode_pager_data_request(
- memory_object_t,
- memory_object_offset_t,
- vm_size_t,
- vm_prot_t);
-
-kern_return_t
-vnode_pager_data_return(
- memory_object_t,
- memory_object_offset_t,
- vm_size_t,
- boolean_t,
- boolean_t);
-
-kern_return_t
-vnode_pager_data_initialize(
- memory_object_t,
- memory_object_offset_t,
- vm_size_t);
-
-void
-vnode_pager_deallocate(
- memory_object_t);
-
-kern_return_t
-vnode_pager_terminate(
- memory_object_t);
-
-kern_return_t
-vnode_pager_cluster_read(
+vnode_pager_cluster_read( /* forward */
vnode_pager_t,
vm_object_offset_t,
vm_size_t);
void
-vnode_pager_cluster_write(
+vnode_pager_cluster_write( /* forward */
vnode_pager_t,
vm_object_offset_t,
- vm_size_t);
-
-
-int
-vnode_pagein(
- vnode_port_t,
- upl_t,
- vm_offset_t,
- vm_object_offset_t,
- int,
- int,
- int *);
-int
-vnode_pageout(
- vnode_port_t,
- upl_t,
- vm_offset_t,
- vm_object_offset_t,
- int,
- int,
- int *);
+ vm_size_t,
+ vm_object_offset_t *,
+ int *,
+ int);
-vm_object_offset_t
-vnode_pager_get_filesize(
- vnode_port_t);
vnode_pager_t
-vnode_object_create(
- vnode_port_t vp);
+vnode_object_create( /* forward */
+ struct vnode *);
vnode_pager_t
-vnode_pager_lookup(
+vnode_pager_lookup( /* forward */
memory_object_t);
-void
-vnode_pager_release_from_cache(
- int *cnt);
-
zone_t vnode_pager_zone;
*/
int
macx_triggers(
- int hi_water,
- int low_water,
- int flags,
- mach_port_t trigger_name)
+ struct macx_triggers_args *args)
{
+ int hi_water = args->hi_water;
+ int low_water = args->low_water;
+ int flags = args->flags;
+ mach_port_t trigger_name = args->alert_port;
kern_return_t kr;
memory_object_default_t default_pager;
ipc_port_t trigger_port;
if(kr != KERN_SUCCESS) {
return EINVAL;
}
+
+ if ((flags & SWAP_ENCRYPT_ON) &&
+ (flags & SWAP_ENCRYPT_OFF)) {
+ /* can't have it both ways */
+ return EINVAL;
+ }
+
+ if (flags & SWAP_ENCRYPT_ON) {
+ /* ENCRYPTED SWAP: tell default_pager to encrypt */
+ default_pager_triggers(default_pager,
+ 0, 0,
+ SWAP_ENCRYPT_ON,
+ IP_NULL);
+ } else if (flags & SWAP_ENCRYPT_OFF) {
+ /* ENCRYPTED SWAP: tell default_pager not to encrypt */
+ default_pager_triggers(default_pager,
+ 0, 0,
+ SWAP_ENCRYPT_OFF,
+ IP_NULL);
+ }
+
if (flags & HI_WAT_ALERT) {
trigger_port = trigger_name_to_port(trigger_name);
if(trigger_port == NULL) {
/*
* Set thread scheduling priority and policy for the current thread
* it is assumed for the time being that the thread setting the alert
- * is the same one which will be servicing it.
+ * is the same one which will be servicing it.
+ *
+ * XXX This does not belong in the kernel XXX
*/
{
- struct policy_timeshare_base fifo_base;
- struct policy_timeshare_limit fifo_limit;
- policy_base_t base;
- processor_set_t pset;
- policy_limit_t limit;
-
- pset = (current_thread())->processor_set;
- base = (policy_base_t) &fifo_base;
- limit = (policy_limit_t) &fifo_limit;
- fifo_limit.max_priority = fifo_base.base_priority = MAXPRI_STANDARD;
- thread_set_policy((current_thread())->top_act, pset, POLICY_FIFO, base, POLICY_TIMESHARE_BASE_COUNT, limit, POLICY_TIMESHARE_LIMIT_COUNT);
+ thread_precedence_policy_data_t pre;
+ thread_extended_policy_data_t ext;
+
+ ext.timeshare = FALSE;
+ pre.importance = INT32_MAX;
+
+ thread_policy_set(current_thread(),
+ THREAD_EXTENDED_POLICY,
+ (thread_policy_t)&ext,
+ THREAD_EXTENDED_POLICY_COUNT);
+
+ thread_policy_set(current_thread(),
+ THREAD_PRECEDENCE_POLICY,
+ (thread_policy_t)&pre,
+ THREAD_PRECEDENCE_POLICY_COUNT);
}
- current_thread()->vm_privilege = TRUE;
+ current_thread()->options |= TH_OPT_VMPRIV;
+
+ return 0;
}
/*
return trigger_port;
}
+
+extern int uiomove64(addr64_t, int, void *);
+#define MAX_RUN 32
+
+int
+memory_object_control_uiomove(
+ memory_object_control_t control,
+ memory_object_offset_t offset,
+ void * uio,
+ int start_offset,
+ int io_requested,
+ int mark_dirty)
+{
+ vm_object_t object;
+ vm_page_t dst_page;
+ int xsize;
+ int retval = 0;
+ int cur_run;
+ int cur_needed;
+ int i;
+ vm_page_t page_run[MAX_RUN];
+
+
+ object = memory_object_control_to_vm_object(control);
+ if (object == VM_OBJECT_NULL) {
+ return (0);
+ }
+ assert(!object->internal);
+
+ vm_object_lock(object);
+
+ if (mark_dirty && object->copy != VM_OBJECT_NULL) {
+ /*
+ * We can't modify the pages without honoring
+ * copy-on-write obligations first, so fall off
+ * this optimized path and fall back to the regular
+ * path.
+ */
+ vm_object_unlock(object);
+ return 0;
+ }
+
+ while (io_requested && retval == 0) {
+
+ cur_needed = (start_offset + io_requested + (PAGE_SIZE - 1)) / PAGE_SIZE;
+
+ if (cur_needed > MAX_RUN)
+ cur_needed = MAX_RUN;
+
+ for (cur_run = 0; cur_run < cur_needed; ) {
+
+ if ((dst_page = vm_page_lookup(object, offset)) == VM_PAGE_NULL)
+ break;
+ /*
+ * Sync up on getting the busy bit
+ */
+ if ((dst_page->busy || dst_page->cleaning)) {
+ /*
+ * someone else is playing with the page... if we've
+ * already collected pages into this run, go ahead
+ * and process now, we can't block on this
+ * page while holding other pages in the BUSY state
+ * otherwise we will wait
+ */
+ if (cur_run)
+ break;
+ PAGE_SLEEP(object, dst_page, THREAD_UNINT);
+ continue;
+ }
+ /*
+ * this routine is only called when copying
+ * to/from real files... no need to consider
+ * encrypted swap pages
+ */
+ assert(!dst_page->encrypted);
+
+ if (mark_dirty)
+ dst_page->dirty = TRUE;
+ dst_page->busy = TRUE;
+
+ page_run[cur_run++] = dst_page;
+
+ offset += PAGE_SIZE_64;
+ }
+ if (cur_run == 0)
+ /*
+ * we hit a 'hole' in the cache
+ * we bail at this point
+ * we'll unlock the object below
+ */
+ break;
+ vm_object_unlock(object);
+
+ for (i = 0; i < cur_run; i++) {
+
+ dst_page = page_run[i];
+
+ if ((xsize = PAGE_SIZE - start_offset) > io_requested)
+ xsize = io_requested;
+
+ if ( (retval = uiomove64((addr64_t)(((addr64_t)(dst_page->phys_page) << 12) + start_offset), xsize, uio)) )
+ break;
+
+ io_requested -= xsize;
+ start_offset = 0;
+ }
+ vm_object_lock(object);
+
+ for (i = 0; i < cur_run; i++) {
+ dst_page = page_run[i];
+
+ PAGE_WAKEUP_DONE(dst_page);
+ }
+ }
+ vm_object_unlock(object);
+
+ return (retval);
+}
+
+
/*
*
*/
*/
memory_object_t
vnode_pager_setup(
- vnode_port_t vp,
- memory_object_t pager)
+ struct vnode *vp,
+ __unused memory_object_t pager)
{
vnode_pager_t vnode_object;
kern_return_t
vnode_pager_init(memory_object_t mem_obj,
memory_object_control_t control,
- vm_size_t pg_size)
+#if !DEBUG
+ __unused
+#endif
+ vm_size_t pg_size)
{
vnode_pager_t vnode_object;
kern_return_t kr;
memory_object_attr_info_data_t attributes;
- PAGER_DEBUG(PAGER_ALL, ("vnode_pager_init: %x, %x, %x\n", pager, pager_request, pg_size));
+ PAGER_DEBUG(PAGER_ALL, ("vnode_pager_init: %p, %p, %x\n", mem_obj, control, pg_size));
if (control == MEMORY_OBJECT_CONTROL_NULL)
return KERN_INVALID_ARGUMENT;
vnode_object = vnode_pager_lookup(mem_obj);
memory_object_control_reference(control);
+
vnode_object->control_handle = control;
attributes.copy_strategy = MEMORY_OBJECT_COPY_DELAY;
memory_object_t mem_obj,
memory_object_offset_t offset,
vm_size_t data_cnt,
- boolean_t dirty,
- boolean_t kernel_copy)
+ memory_object_offset_t *resid_offset,
+ int *io_error,
+ __unused boolean_t dirty,
+ __unused boolean_t kernel_copy,
+ int upl_flags)
{
register vnode_pager_t vnode_object;
vnode_object = vnode_pager_lookup(mem_obj);
- vnode_pager_cluster_write(vnode_object, offset, data_cnt);
+ vnode_pager_cluster_write(vnode_object, offset, data_cnt, resid_offset, io_error, upl_flags);
return KERN_SUCCESS;
}
kern_return_t
vnode_pager_data_initialize(
- memory_object_t mem_obj,
- memory_object_offset_t offset,
- vm_size_t data_cnt)
+ __unused memory_object_t mem_obj,
+ __unused memory_object_offset_t offset,
+ __unused vm_size_t data_cnt)
{
+ panic("vnode_pager_data_initialize");
return KERN_FAILURE;
}
kern_return_t
vnode_pager_data_unlock(
- memory_object_t mem_obj,
- memory_object_offset_t offset,
- vm_size_t size,
- vm_prot_t desired_access)
+ __unused memory_object_t mem_obj,
+ __unused memory_object_offset_t offset,
+ __unused vm_size_t size,
+ __unused vm_prot_t desired_access)
{
return KERN_FAILURE;
}
memory_object_t mem_obj,
memory_object_offset_t offset,
vm_size_t length,
- vm_prot_t protection_required)
+#if !DEBUG
+ __unused
+#endif
+vm_prot_t protection_required)
{
register vnode_pager_t vnode_object;
PAGER_DEBUG(PAGER_PAGEIN, ("vnode_pager_data_request: %x, %x, %x, %x, vnode_object %x\n", mem_obj, offset, length, protection_required, vnode_object));
- vnode_pager_cluster_read(vnode_object, offset, length);
-
- return KERN_SUCCESS;
+ return vnode_pager_cluster_read(vnode_object, offset, length);
}
/*
memory_object_t mem_obj)
{
register vnode_pager_t vnode_object;
- unsigned int prev_ref_count;
+ unsigned int new_ref_count;
vnode_object = vnode_pager_lookup(mem_obj);
- prev_ref_count = OSIncrementAtomic((UInt32 *)&vnode_object->ref_count);
- assert(prev_ref_count > 0);
+ new_ref_count = hw_atomic_add(&vnode_object->ref_count, 1);
+ assert(new_ref_count > 1);
}
/*
vnode_object = vnode_pager_lookup(mem_obj);
- if (OSDecrementAtomic((UInt32 *)&vnode_object->ref_count) == 1) {
- if (vnode_object->vnode_handle != (vnode_port_t) NULL) {
+ if (hw_atomic_sub(&vnode_object->ref_count, 1) == 0) {
+ if (vnode_object->vnode_handle != NULL) {
vnode_pager_vrele(vnode_object->vnode_handle);
}
- zfree(vnode_pager_zone, (vm_offset_t) vnode_object);
+ zfree(vnode_pager_zone, vnode_object);
}
return;
}
*/
kern_return_t
vnode_pager_terminate(
+#if !DEBUG
+ __unused
+#endif
memory_object_t mem_obj)
{
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_terminate: %x\n", mem_obj));
memory_object_t mem_obj,
memory_object_offset_t offset,
vm_size_t length,
- vm_sync_t sync_flags)
+ __unused vm_sync_t sync_flags)
{
register vnode_pager_t vnode_object;
vnode_pager_cluster_write(
vnode_pager_t vnode_object,
vm_object_offset_t offset,
- vm_size_t cnt)
+ vm_size_t cnt,
+ vm_object_offset_t * resid_offset,
+ int * io_error,
+ int upl_flags)
{
- int error = 0;
- int local_error = 0;
- int kret;
- int size;
+ vm_size_t size;
+ upl_t upl = NULL;
+ int request_flags;
+ int errno;
- if (cnt & PAGE_MASK) {
- panic("vs_cluster_write: cnt not a multiple of PAGE_SIZE");
- }
- size = (cnt < (PAGE_SIZE*32)) ? cnt : (PAGE_SIZE*32); /* effective min */
-
- while (cnt) {
+ if (upl_flags & UPL_MSYNC) {
- kret = vnode_pageout(vnode_object->vnode_handle,
- (upl_t )NULL, (vm_offset_t)NULL,
- offset, size, 0, &local_error);
-/*
- if(kret == PAGER_ABSENT) {
- Need to work out the defs here, 1 corresponds to
- PAGER_ABSENT defined in bsd/vm/vm_pager.h However,
- we should not be including that file here it is a
- layering violation.
-*/
- if(kret == 1) {
- int uplflags;
- upl_t upl = NULL;
- int count = 0;
- kern_return_t kr;
-
- uplflags = (UPL_NO_SYNC | UPL_CLEAN_IN_PLACE |
- UPL_SET_INTERNAL | UPL_COPYOUT_FROM);
- count = 0;
- kr = memory_object_upl_request(
- vnode_object->control_handle,
- offset, size, &upl, NULL, &count, uplflags);
- if(kr != KERN_SUCCESS) {
- panic("vnode_pager_cluster_write: upl request failed\n");
- }
- upl_abort(upl, 0);
- upl_deallocate(upl);
+ upl_flags |= UPL_VNODE_PAGER;
+
+ if ( (upl_flags & UPL_IOSYNC) && io_error)
+ upl_flags |= UPL_KEEPCACHED;
+
+ while (cnt) {
+ kern_return_t kr;
+
+ size = (cnt < (PAGE_SIZE * MAX_UPL_TRANSFER)) ? cnt : (PAGE_SIZE * MAX_UPL_TRANSFER); /* effective max */
- error = 0;
- local_error = 0;
+ request_flags = UPL_RET_ONLY_DIRTY | UPL_COPYOUT_FROM | UPL_CLEAN_IN_PLACE |
+ UPL_SET_INTERNAL | UPL_SET_LITE;
+
+ kr = memory_object_upl_request(vnode_object->control_handle,
+ offset, size, &upl, NULL, NULL, request_flags);
+ if (kr != KERN_SUCCESS)
+ panic("vnode_pager_cluster_write: upl request failed\n");
+
+ vnode_pageout(vnode_object->vnode_handle,
+ upl, (vm_offset_t)0, offset, size, upl_flags, &errno);
+
+ if ( (upl_flags & UPL_KEEPCACHED) ) {
+ if ( (*io_error = errno) )
+ break;
+ }
+ cnt -= size;
+ offset += size;
+ }
+ if (resid_offset)
+ *resid_offset = offset;
+
+ } else {
+ vm_object_offset_t vnode_size;
+ vm_object_offset_t base_offset;
+ vm_object_t object;
+ vm_page_t target_page;
+ int ticket;
+
+ /*
+ * this is the pageout path
+ */
+ vnode_size = vnode_pager_get_filesize(vnode_object->vnode_handle);
+
+ if (vnode_size > (offset + PAGE_SIZE)) {
+ /*
+ * preset the maximum size of the cluster
+ * and put us on a nice cluster boundary...
+ * and then clip the size to insure we
+ * don't request past the end of the underlying file
+ */
+ size = PAGE_SIZE * MAX_UPL_TRANSFER;
+ base_offset = offset & ~((signed)(size - 1));
+
+ if ((base_offset + size) > vnode_size)
+ size = round_page_32(((vm_size_t)(vnode_size - base_offset)));
+ } else {
+ /*
+ * we've been requested to page out a page beyond the current
+ * end of the 'file'... don't try to cluster in this case...
+ * we still need to send this page through because it might
+ * be marked precious and the underlying filesystem may need
+ * to do something with it (besides page it out)...
+ */
+ base_offset = offset;
+ size = PAGE_SIZE;
}
+ object = memory_object_control_to_vm_object(vnode_object->control_handle);
+
+ if (object == VM_OBJECT_NULL)
+ panic("vnode_pager_cluster_write: NULL vm_object in control handle\n");
+
+ request_flags = UPL_NOBLOCK | UPL_FOR_PAGEOUT | UPL_CLEAN_IN_PLACE |
+ UPL_RET_ONLY_DIRTY | UPL_COPYOUT_FROM |
+ UPL_SET_INTERNAL | UPL_SET_LITE;
+
+ vm_object_lock(object);
+
+ if ((target_page = vm_page_lookup(object, offset)) != VM_PAGE_NULL) {
+ /*
+ * only pick up pages whose ticket number matches
+ * the ticket number of the page orginally targeted
+ * for pageout
+ */
+ ticket = target_page->page_ticket;
- if (local_error != 0) {
- error = local_error;
- local_error = 0;
+ request_flags |= ((ticket << UPL_PAGE_TICKET_SHIFT) & UPL_PAGE_TICKET_MASK);
}
- cnt -= size;
- offset += size;
- size = (cnt < (PAGE_SIZE*32)) ? cnt : (PAGE_SIZE*32); /* effective min */
+ vm_object_unlock(object);
+
+ vm_object_upl_request(object, base_offset, size,
+ &upl, NULL, NULL, request_flags);
+ if (upl == NULL)
+ panic("vnode_pager_cluster_write: upl request failed\n");
+
+ vnode_pageout(vnode_object->vnode_handle,
+ upl, (vm_offset_t)0, upl->offset, upl->size, UPL_VNODE_PAGER, NULL);
}
-#if 0
- if (error != 0)
- return(KERN_FAILURE);
-
- return(KERN_SUCCESS);
-#endif /* 0 */
}
vm_object_offset_t offset,
vm_size_t cnt)
{
- int error = 0;
int local_error = 0;
int kret;
- if(cnt & PAGE_MASK) {
- panic("vs_cluster_read: cnt not a multiple of PAGE_SIZE");
- }
+ assert(! (cnt & PAGE_MASK));
- kret = vnode_pagein(vnode_object->vnode_handle, (upl_t)NULL, (vm_offset_t)NULL, offset, cnt, 2, &local_error);
+ kret = vnode_pagein(vnode_object->vnode_handle,
+ (upl_t) NULL,
+ (vm_offset_t) NULL,
+ offset,
+ cnt,
+ 0,
+ &local_error);
/*
if(kret == PAGER_ABSENT) {
Need to work out the defs here, 1 corresponds to PAGER_ABSENT
defined in bsd/vm/vm_pager.h However, we should not be including
that file here it is a layering violation.
*/
- if(kret == 1) {
- int uplflags;
- upl_t upl = NULL;
- int count = 0;
- kern_return_t kr;
-
- uplflags = (UPL_NO_SYNC |
- UPL_CLEAN_IN_PLACE | UPL_SET_INTERNAL);
- count = 0;
- kr = memory_object_upl_request(
- vnode_object->control_handle, offset, cnt,
- &upl, NULL, &count, uplflags);
- if(kr != KERN_SUCCESS) {
- panic("vnode_pager_cluster_read: upl request failed\n");
- }
+ if (kret == 1) {
+ int uplflags;
+ upl_t upl = NULL;
+ int count = 0;
+ kern_return_t kr;
+
+ uplflags = (UPL_NO_SYNC |
+ UPL_CLEAN_IN_PLACE |
+ UPL_SET_INTERNAL);
+ count = 0;
+ kr = memory_object_upl_request(vnode_object->control_handle,
+ offset, cnt,
+ &upl, NULL, &count, uplflags);
+ if (kr == KERN_SUCCESS) {
upl_abort(upl, 0);
upl_deallocate(upl);
+ } else {
+ /*
+ * We couldn't gather the page list, probably
+ * because the memory object doesn't have a link
+ * to a VM object anymore (forced unmount, for
+ * example). Just return an error to the vm_fault()
+ * path and let it handle it.
+ */
+ }
- error = 1;
+ return KERN_FAILURE;
}
- if (error != 0)
- return(KERN_FAILURE);
-
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
*/
vnode_pager_t
vnode_object_create(
- vnode_port_t vp)
+ struct vnode *vp)
{
register vnode_pager_t vnode_object;
projects / apple / xnu.git / blobdiff