Re: [RFC PATCH 02/14] sparc64: add new fields to mmu context for shared context support

Hi Mike.

On Fri, Dec 16, 2016 at 10:35:25AM -0800, Mike Kravetz wrote:

Add new fields to the mm_context structure to support shared context.
Instead of a simple context ID, add a pointer to a structure with a
reference count.  This is needed as multiple tasks will share the
context ID.

What are the benefits with the shared_mmu_ctx struct?
It does not save any space in mm_context_t, and the CPU only
supports one extra context.
So it looks like over-engineering with all the extra administration
required to handle it with refcount, poitners etc.

what do I miss?

	Sam

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>