linux-kernel - Re: [PATCH 3.16 47/47] KVM: x86/vPMU: refine kvm

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Message-ID: <3078d0a186cca2dfae741908ffff41f1bdb30eae.camel@perches.com>
Date:   Thu, 31 Oct 2019 15:53:23 -0700
From:   Joe Perches <joe@...ches.com>
To:     Ben Hutchings <ben@...adent.org.uk>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>
Cc:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        Like Xu <like.xu@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH 3.16 47/47] KVM: x86/vPMU: refine kvm_pmu err msg when
 event creation failed

On Thu, 2019-10-31 at 22:14 +0000, Ben Hutchings wrote:
> On Fri, 2019-10-25 at 12:05 -0700, Joe Perches wrote:
> > On Fri, 2019-10-25 at 19:03 +0100, Ben Hutchings wrote:
> > > 3.16.76-rc1 review patch.  If anyone has any objections, please let me know.
> > 
> > This seems more like an enhancement than a bug fix.
> > 
> > Is this really the type of patch that is appropriate
> > for stable?
> 
> Apparently so:
> 
> v4.14.135: eba797dbf352 KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
> v4.19.61: ba27a25df6df KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
> v4.4.187: 505c011f9f53 KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
> v4.9.187: 3984eae04473 KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
> v5.1.20: edadec197fbf KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
> v5.2.3: 9f062aef7356 KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed

I think not, but hey, maybe you and Greg do.

Porting enhancements, even trivial ones, imo is
not a great thing for stable branches.

My perspective is that only bug fixes should be
applied to stable branches.

cheers, Joe