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xen-devel
[Xen-devel] Re: [PATCH] Modpost section mismatch fix
On Mon, 2011-07-04 at 04:55 +0530, Raghavendra D Prabhu wrote:
> [Sorry if duplicate, one earlier was corrupt]
>
> Hi,
> I got section mismatches reported by modpost in latest build. It got
> reported for xen_register_pirq and xen_unplug_emulated_devices
> functions.
> xen_register_pirq makes reference to
> acpi_sci_override_gsi in init.data section; marking
> xen_register_pirq with __init is not feasible since calls are made
> to it from acpi_register_gsi in non-init contexts. So marking it
> __refdata based on assumption that when acpi_sci_override_gsi is
> referenced, it is in early stages where it is alive.
I don't think this assumption holds, since xen_register_pirq can be
called at any time and basically unconditionally references
acpi_sci_override_gsi.
If we don't want to remove the __init from acpi_sci_override_gsi then
perhaps xen_setup_acpi_sci needs to stash it somewhere?
Or maybe xen_register_pirq could take an "int force_irq" which, if not
-1, would force a particular IRQ. The callsite in xen_setup_acpi_sci
(actually via xen_register_gsi so the param would need to be propagated
there) would be the only actual user?
The xen_unplug_emulated_devices change looks correct to me since
xen_unplug_emulated_devices is called from xen_arch_hvm_post_suspend.
Ian.
>
>
> --------------------------
> Raghavendra Prabhu
> GPG Id : 0xD72BE977
> Fingerprint: B93F EBCB 8E05 7039 CD3C A4B8 A616 DCA1 D72B E977
> www: wnohang.net
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--
Ian Campbell
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