On Tue, Jun 08, 2021 at 08:06:17PM +0200, Claudio Imbrenda wrote: > The recent patches to add support for hugepage vmalloc mappings added a > flag for __vmalloc_node_range to allow to request small pages. > This flag is not accessible when calling vmalloc, the only option is to > call directly __vmalloc_node_range, which is not exported. > > This means that a module can't vmalloc memory with small pages. > > Case in point: KVM on s390x needs to vmalloc a large area, and it needs > to be mapped with small pages, because of a hardware limitation. > > This patch exports __vmalloc_node_range so it can be used in modules > too. No. I spent a lot of effort to mak sure such a low-level API is not exported.
