| 550,12 → 550,13 |
|---|
| * @param dst_base Target base address. |
| * @param dst_flags_mask Destination address space area flags mask. |
| * |
| * @return Zero on success or ENOENT if there is no such task or |
| * if there is no such address space area, |
| * EPERM if there was a problem in accepting the area or |
| * ENOMEM if there was a problem in allocating destination |
| * address space area. ENOTSUP is returned if an attempt |
| * to share non-anonymous address space area is detected. |
| * @return Zero on success or ENOENT if there is no such task or if there is no |
| * such address space area, EPERM if there was a problem in accepting the area |
| * or ENOMEM if there was a problem in allocating destination address space |
| * area. ENOTSUP is returned if the address space area backend does not support |
| * sharing. It can be also returned if the architecture uses virtually indexed |
| * caches and the source and destination areas start at pages with different |
| * page colors. |
| */ |
| int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
| as_t *dst_as, uintptr_t dst_base, int dst_flags_mask) |
| 580,6 → 581,20 |
|---|
| return ENOENT; |
| } |
| |
| #if 0 /* disable the check for now */ |
| #ifdef CONFIG_VIRT_IDX_CACHE |
| if (PAGE_COLOR(src_area->base) != PAGE_COLOR(dst_base)) { |
| /* |
| * Refuse to create illegal address alias. |
| */ |
| mutex_unlock(&src_area->lock); |
| mutex_unlock(&src_as->lock); |
| interrupts_restore(ipl); |
| return ENOTSUP; |
| } |
| #endif /* CONFIG_VIRT_IDX_CACHE */ |
| #endif |
| |
| if (!src_area->backend || !src_area->backend->share) { |
| /* |
| * There is no backend or the backend does not |