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Message-ID: <6d85013b195373211865bbf5eff9c5d973f74a57.camel@infradead.org>
Subject: Re: [RFC PATCH 1/1] platform-msi: Add platform check for subdevice
 irq domain
From:   David Woodhouse <dwmw2@infradead.org>
To:     Bjorn Helgaas <helgaas@kernel.org>,
        Lu Baolu <baolu.lu@linux.intel.com>
Cc:     tglx@linutronix.de, ashok.raj@intel.com, kevin.tian@intel.com,
        dave.jiang@intel.com, megha.dey@intel.com,
        alex.williamson@redhat.com, bhelgaas@google.com,
        dan.j.williams@intel.com, dmaengine@vger.kernel.org,
        eric.auger@redhat.com, jacob.jun.pan@intel.com, jgg@mellanox.com,
        jing.lin@intel.com, kvm@vger.kernel.org, kwankhede@nvidia.com,
        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        maz@kernel.org, mona.hossain@intel.com, netanelg@mellanox.com,
        parav@mellanox.com, pbonzini@redhat.com, rafael@kernel.org,
        samuel.ortiz@intel.com, sanjay.k.kumar@intel.com,
        shahafs@mellanox.com, tony.luck@intel.com, vkoul@kernel.org,
        yan.y.zhao@linux.intel.com, yi.l.liu@intel.com
Date:   Thu, 10 Dec 2020 19:15:15 +0000
In-Reply-To: <20201210185738.GA49060@bjorn-Precision-5520>
References: <20201210185738.GA49060@bjorn-Precision-5520>
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On Thu, 2020-12-10 at 12:57 -0600, Bjorn Helgaas wrote:
> What is the point of a function called probably_on_bare_metal()?
> *Probably*?  The caller can't really do anything with the fact that
> we're not 100% sure this gives the correct answer.  Just call it
> "on_bare_metal()" or something and accept the fact that it might be
> wrong sometimes.

Acknowledging that it's a heuristic is OK, but we should certainly be
clear about whether it has false positives, false negatives, or both.

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