linux-kernel - Re: [PATCH v5 0/7] KVM: arm64: Add support for FEAT

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Date:   Thu, 15 Jun 2023 07:14:26 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Oliver Upton <oliver.upton@...ux.dev>
Cc:     Raghavendra Rao Ananta <rananta@...gle.com>,
        Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v5 0/7] KVM: arm64: Add support for FEAT_TLBIRANGE

On Thu, Jun 15, 2023, Oliver Upton wrote:
> +cc Sean
> 
> On Wed, Jun 14, 2023 at 06:57:01PM -0700, Raghavendra Rao Ananta wrote:
> > On Wed, Jun 14, 2023 at 5:19 AM Oliver Upton <oliver.upton@...ux.dev> wrote:
> > >
> > > Hi Raghavendra,
> > >
> > > On Tue, Jun 06, 2023 at 07:28:51PM +0000, Raghavendra Rao Ananta wrote:
> > > > The series is based off of upstream v6.4-rc2, and applied David
> > > > Matlack's common API for TLB invalidations[1] on top.
> > >
> > > Sorry I didn't spot the dependency earlier, but this isn't helpful TBH.
> > >
> > > David's series was partially applied, and what remains no longer cleanly
> > > applies to the base you suggest. Independent of that, my *strong*
> > > preference is that you just send out a series containing your patches as
> > > well as David's. Coordinating dependent efforts is the only sane thing
> > > to do. Also, those patches are 5 months old at this point which is
> > > ancient history.
> > >
> > Would you rather prefer I detach this series from David's as I'm not
> > sure what his plans are for future versions?
> > On the other hand, the patches seem simple enough to rebase and give
> > another shot at review, but may end up delaying this series.
> > WDYT?
> 
> In cases such as this you'd typically coordinate with the other
> developer to pick up their changes as part of your series. Especially
> for this case -- David's refactoring is _pointless_ without another
> user for that code (i.e. arm64). As fun as it might be to antagonize
> Sean, that series pokes x86 and I'd like an ack from on it.
> 
> So, please post a combined series that applies cleanly to an early 6.4
> rc of your choosing, and cc all affected reviewers/maintainers.

+1