Messages in this thread | | | Date | Tue, 6 Nov 2018 23:00:59 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 2/4] x86/amd_nb: add support for newer PCI topologies |
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On Tue, Nov 06, 2018 at 03:42:56PM -0600, Bjorn Helgaas wrote: > This isn't some complicated new device where the programming model > changed on the new CPU. This is a thermometer that was already > supported. ACPI provides plenty of functionality that could be used > to support this generically, e.g., see drivers/acpi/thermal.c, > drivers/thermal/int340x_thermal/processor_thermal_device.c, etc.
Ok, you say ACPI but how do you envision practically doing that? I mean, this is used by old boxes too - ever since K8. So how do we go and add ACPI functionality to old boxes?
Or do you mean it should simply be converted to do pci_register_driver() with a struct pci_driver pointer which has all those PCI device IDs in a table? I'm looking at the last example drivers/thermal/int340x_thermal/processor_thermal_device.c you gave above.
> But maybe there's some real value in the nitty-gritty device-specific > code in amd_nb.c. If so, I guess you're stuck with updates like this > and negotiating with the distros to do backports and new releases.
Well, even if it is converted to a different registration scheme, you still need to add new PCI device IDs to the table, no? So *some* sort of enablement still needs to happen.
And then the argument about needing enablement for distros is moot because it still needs enablement/backporting - regardless of the registration scheme.
Or do you mean something else?
I mean, don't get me wrong, I don't mind if it gets converted to pci_register_driver() if you think it fits better this way with the drivers registering with PCI devices - I'm just trying to understand the reasoning for it.
Thx.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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