linux-kernel - Re: [PATCH] entry/kvm: Make vCPU tasks exit to userspace when a livepatch is pending

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Message-ID: <20220503173046.fv2aluc34bxhzgq3@treble>
Date:   Tue, 3 May 2022 10:30:46 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Seth Forshee <sforshee@...italocean.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Jiri Kosina <jikos@...nel.org>,
        Miroslav Benes <mbenes@...e.cz>,
        Petr Mladek <pmladek@...e.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH] entry/kvm: Make vCPU tasks exit to userspace when a
 livepatch is pending

On Tue, May 03, 2022 at 11:18:02AM -0500, Seth Forshee wrote:
> > Can the changelog and comment use terminology other than migration?  Maybe "transition"?
> > That seems to be prevelant through the livepatch code and docs.  There are already
> > too many meanings for "migration" in KVM, e.g. live migration, page migration, task/vCPU
> > migration, etc...
> 
> "Transition" is used a lot, but afaict it refers to the overall state of
> the livepatch. "Migrate" is used a lot less, but it always seems to
> refer to patching a single task, which is why I used that term. But I
> can see the opportunity for confusion, so I'll reword it.

The livepatch code does seem to be guilty of using both terms
interchangeably.  I agree "transition" is preferable.

-- 
Josh