page = __dma_direct_alloc_pages(dev, size, gfp);
if (!page)
return NULL;
+ if (PageHighMem(page)) {
+ /*
+ * Depending on the cma= arguments and per-arch setup
+ * dma_alloc_contiguous could return highmem pages.
+ * Without remapping there is no way to return them here,
+ * so log an error and fail.
+ */
+ dev_info(dev, "Rejecting highmem page from CMA.\n");
+ goto out_free_pages;
+ }
+
ret = page_address(page);
if (force_dma_unencrypted(dev)) {
if (set_memory_decrypted((unsigned long)ret,