Function rt_varea_map_page

components/mm/mm_aspace.c:1328–1363

}

int rt_varea_map_page(rt_varea_t varea, void *vaddr, void *page)
{
    int err = RT_EOK;
    void *page_pa = rt_kmem_v2p(page);

    if (!varea || !vaddr || !page)
    {
        LOG_W("%s(%p,%p,%p): invalid input", __func__, varea, vaddr, page);
        err = -RT_EINVAL;
    }
    else if (page_pa == ARCH_MAP_FAILED)
    {
        LOG_W("%s: page is not in kernel space", __func__);
        err = -RT_ERROR;
    }
    else if (_not_in_range(MMF_MAP_FIXED, vaddr, ARCH_PAGE_SIZE,
                           varea->start, varea->size))
    {
        LOG_W("%s(%p,%lx): not in range of varea(%p,%lx)", __func__,
            vaddr, ARCH_PAGE_SIZE, varea->start, varea->size);
        err = -RT_EINVAL;
    }
    else
    {
        err = _do_named_map(
            varea->aspace,
            varea,
            vaddr,
            ARCH_PAGE_SIZE,
            MM_PA_TO_OFF(page_pa),
            varea->attr
        );
    }

    return err;
}

int rt_varea_unmap_page(rt_varea_t varea, void *vaddr)
{