On Mon, Sep 15, 2025 at 06:13:40PM +0800, Chunyan Zhang wrote:
> Some platforms can customize the PTE/PMD entry uffd-wp bit making
> it unavailable even if the architecture provides the resource.
> This patch adds a macro API that allows architectures to define their
> specific implementations to check if the uffd-wp bit is available
> on which device the kernel is running.
> 
> Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn>

According to patchwork CI for riscv, this doesn't build for 32-bit
defconfigs or the no-mmu defconfigs.