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    SubjectRe: [PATCH 1/2] PCI/DPC: Add 'nodpc' parameter
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    On Thu, 2018-08-16 at 15:19 -0600, Keith Busch wrote:
    > On Thu, Aug 16, 2018 at 01:50:42PM -0700, Derrick, Jonathan wrote:
    > > It can also be disabled with setpci, but is that any less of a
    > > hassle?
    > > Genuine question to understand your point of view.
    >
    > That is not a real solution, IMO. 'setpci' is good to inject things
    > for testing, but it changes config space without the kernel aware
    > that
    > you've done that, so it is inherently racey with other kernel threads
    > touching pci config space. And the kernel or platform may end up
    > undoing
    > what you had 'setpci' do anyway with no immediate way to be notified
    > it
    > was changed.

    It sounds like a sysfs toggle could be useful regardless of the boot
    parameter.[unhandled content-type:application/x-pkcs7-signature]
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