On Fri, Jul 04, 2025 at 02:33:35PM +0100, Will Deacon wrote:

I would actually like to select VMAP_STACK unconditionally for arm64.
Historically, we were held back waiting for all the various KASAN modes
to support vmalloc properly, but I _think_ that's fixed now...

The VMAP_STACK dependency is:

	depends on !KASAN || KASAN_HW_TAGS || KASAN_VMALLOC

and in arm64 we have:

	select KASAN_VMALLOC if KASAN

so it should be fine to select it afaict.

Any reason not to do that?

Not that I am aware of.

I'm also in favour of unconditionally selecting VMAP_STACK.

Mark.