Re: [patch 00/15] x86/tlb: Unexport per-CPU tlbstate

From: Sean Christopherson
Date: Tue Apr 21 2020 - 04:09:10 EST


On Mon, Apr 20, 2020 at 07:27:06PM +0200, Thomas Gleixner wrote:
> Christoph Hellwig <hch@xxxxxxxxxxxxx> writes:
> > Just looking over some exports at the end of the series (and thus
> > ignoring bisection issues):
> >
> > - Is there any good reason to keep __flush_tlb_all inline vs moving it
> > out of line and kill the flush_tlb_local and flush_tlb_global exports.
> > Also there is just a single modular users in SVM, I wonder if there is
> > any way to get rid of that one as well.
>
> I'll have a look again.

Regarding the SVM case, the only usage is for a TLB errata. At a glance,
svm_init_erratum_383() and is_erratum_383() don't use any KVM hooks, i.e. I
don't see anything that would prevent moving those to .../kernel/cpu/amd.c.