Re: [PATCH v2 3/7] KVM: arm64: Implement __kvm_tlb_flush_range_vmid_ipa()

Oliver Upton
2023-04-04T18:46:49Z

On Mon, Apr 03, 2023 at 02:08:29PM -0700, Raghavendra Rao Ananta wrote:
> On Wed, Mar 29, 2023 at 5:59 PM Oliver Upton <oliver.upton@linux.dev> wrote:
> >
> > On Mon, Feb 06, 2023 at 05:23:36PM +0000, Raghavendra Rao Ananta wrote:
> > > Define __kvm_tlb_flush_range_vmid_ipa() (for VHE and nVHE)
> >
> > bikeshed: Personally, I find that range implies it takes an address as an
> > argument already. Maybe just call it __kvm_tlb_flush_vmid_range()
> >
> Hmm, since TLBI instructions takes-in a variety of ranges, VA or IPA,
> I just thought of extending the '_ipa' to make things clear. Moreover
> it aligns with the existing __kvm_tlb_flush_vmid_ipa(). WDYT?

Like I said, just a bikeshed and it seemed trivial to eliminate a token
in the function name. FWIW, you're dealing in terms of the IPA space by
definition, as a VMID identifies an IPA address space. Range-based
invalidations by VA would instead take an ASID as the address space
identifier.

--
Thanks,
Oliver