Re: [PATCH 2/2] x86/mtrr: Refactor PAT initialization code

From: Ingo Molnar
Date: Fri Mar 11 2016 - 04:01:56 EST

* Toshi Kani <toshi.kani@xxxxxxx> wrote:

> MTRR manages PAT initialization as it implements a rendezvous
> handler that initializes PAT as part of MTRR initialization.
> When CPU does not support MTRR, ex. qemu32 virtual CPU, MTRR
> simply skips PAT init, which causes PAT left enabled without
> initialization. [...]

What practical effects does this have to the user? Does the kernel crash?