> It can get set to sizeof(struct fregs_state) for systems where XSAVE is > not in use. I was neglecting to mention those when I said the "~500 > byte" number. > > My point was that it can vary wildly and that any static allocation > scheme will waste lots of memory when we have small hardware-supported > buffers. Got it. Then I think we need to set the size for the kmem cache to max(fpu_kernel_xstate_size, sizeof(fxregs_state)), unless I'm missing something. I'll send out a version of the patch that does this in a bit. Thanks!
