RE: [PATCH v6 2/9] x86/resctrl: Require 64-bit x86 for resctrl support

[Luck, Tony]

> To be specific, my comment about RDT not being a "server" feature was made with Apollo
> Lake [1] in mind. That system showed up in scenarios where servers do not typically venture
> and per [1] its max memory size (8GB) is significantly less than what servers can support.

Even with just 8GB you should really use 64-bit.

I can't find a link to the original of this quote, but there are several places where other people
reference it. I've personally heard Linus say something along the same lines.

  "On the OS level, it's advantageous for the virtual address space to be larger than the physical
   address space. It needs to be bigger, by a factor of at least two, and that's quite frankly pushing it,
   and you're much better off having a factor of ten or more. Anybody who doesn't get that is a moron.
   End of discussion."  -- Linus Torvalds

-Tony