linux-kernel - Re: [PATCH] KVM: x86: Add a helper to dedup reporting of unhandled VM-Exits

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Message-ID: <aQTrcgT9MMY_69wh@google.com>
Date: Fri, 31 Oct 2025 10:01:38 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Yao Yuan <yaoyuan@...ux.alibaba.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: x86: Add a helper to dedup reporting of unhandled VM-Exits

On Fri, Oct 31, 2025, Yao Yuan wrote:
> On Thu, Oct 30, 2025 at 11:50:03AM +0800, Sean Christopherson wrote:
> I like the dedup, and this brings above for tdx which not
> before. Just one small thing: Will it be better if keep the
> "vmx"/"svm" hint as before and plus the "tdx" hint yet ?

It'd be nice to have, but I honestly don't think it's worth going out of our
way to capture that information.  If someone can't disambiguate "kvm" to mean
"vmx/tdx" vs. "svm" based on the host, they've got bigger problems.

And as for "vmx" vs. "tdx", I really hope that's not meaningful information for
users, e.g. the printks are ratelimited, and users should really be gleaning
information from the VMM instance, not from dmesg.