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| Rev 2556 | Rev 2647 | ||
|---|---|---|---|
| Line 638... | Line 638... | ||
| 638 | * or ENOMEM if there was a problem in allocating destination address space |
638 | * or ENOMEM if there was a problem in allocating destination address space |
| 639 | * area. ENOTSUP is returned if the address space area backend does not support |
639 | * area. ENOTSUP is returned if the address space area backend does not support |
| 640 | * sharing. |
640 | * sharing. |
| 641 | */ |
641 | */ |
| 642 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
642 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
| 643 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask) |
643 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask) |
| 644 | { |
644 | { |
| 645 | ipl_t ipl; |
645 | ipl_t ipl; |
| 646 | int src_flags; |
646 | int src_flags; |
| 647 | size_t src_size; |
647 | size_t src_size; |
| 648 | as_area_t *src_area, *dst_area; |
648 | as_area_t *src_area, *dst_area; |
| Line 700... | Line 700... | ||
| 700 | sh_info = (share_info_t *) malloc(sizeof(share_info_t), 0); |
700 | sh_info = (share_info_t *) malloc(sizeof(share_info_t), 0); |
| 701 | mutex_initialize(&sh_info->lock); |
701 | mutex_initialize(&sh_info->lock); |
| 702 | sh_info->refcount = 2; |
702 | sh_info->refcount = 2; |
| 703 | btree_create(&sh_info->pagemap); |
703 | btree_create(&sh_info->pagemap); |
| 704 | src_area->sh_info = sh_info; |
704 | src_area->sh_info = sh_info; |
| - | 705 | /* |
|
| - | 706 | * Call the backend to setup sharing. |
|
| - | 707 | */ |
|
| - | 708 | src_area->backend->share(src_area); |
|
| 705 | } else { |
709 | } else { |
| 706 | mutex_lock(&sh_info->lock); |
710 | mutex_lock(&sh_info->lock); |
| 707 | sh_info->refcount++; |
711 | sh_info->refcount++; |
| 708 | mutex_unlock(&sh_info->lock); |
712 | mutex_unlock(&sh_info->lock); |
| 709 | } |
713 | } |
| 710 | 714 | ||
| 711 | src_area->backend->share(src_area); |
- | |
| 712 | - | ||
| 713 | mutex_unlock(&src_area->lock); |
715 | mutex_unlock(&src_area->lock); |
| 714 | mutex_unlock(&src_as->lock); |
716 | mutex_unlock(&src_as->lock); |
| 715 | 717 | ||
| 716 | /* |
718 | /* |
| 717 | * Create copy of the source address space area. |
719 | * Create copy of the source address space area. |