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| author | Alan Cox <alc@FreeBSD.org> | 2008-05-17 16:26:34 +0000 |
|---|---|---|
| committer | Alan Cox <alc@FreeBSD.org> | 2008-05-17 16:26:34 +0000 |
| commit | e46cd4132c1882a63c179152684037306543d03e (patch) | |
| tree | 501376280d4c23bcdc75d1cdd9910608f2ec5668 /sys/vm/device_pager.c | |
| parent | bdd9aff946672bebde1fc3f24488320292a5a3e7 (diff) | |
| download | src-e46cd4132c1882a63c179152684037306543d03e.tar.gz src-e46cd4132c1882a63c179152684037306543d03e.zip | |
Preset a device object's alignment ("pg_color") based upon the
physical address of the device's memory. This enables
pmap_align_superpage() to propose a virtual address for mapping the
device memory that permits the use of superpage mappings.
Notes
Notes:
svn path=/head/; revision=179074
Diffstat (limited to 'sys/vm/device_pager.c')
| -rw-r--r-- | sys/vm/device_pager.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/vm/device_pager.c b/sys/vm/device_pager.c index 19ba75f3411e..e7719283e75e 100644 --- a/sys/vm/device_pager.c +++ b/sys/vm/device_pager.c @@ -146,10 +146,14 @@ dev_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot, vm_ooffset_t fo object = vm_pager_object_lookup(&dev_pager_object_list, handle); if (object == NULL) { /* - * Allocate object and associate it with the pager. + * Allocate object and associate it with the pager. Initialize + * the object's pg_color based upon the physical address of the + * device's memory. */ mtx_unlock(&dev_pager_mtx); object1 = vm_object_allocate(OBJT_DEVICE, pindex); + object1->flags |= OBJ_COLORED; + object1->pg_color = atop(paddr) - OFF_TO_IDX(off - PAGE_SIZE); mtx_lock(&dev_pager_mtx); object = vm_pager_object_lookup(&dev_pager_object_list, handle); if (object != NULL) { |