Re: [Xen-devel] [PATCH v2 1/2] console: adjust IRQ initialization

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Mon, Oct 01, 2018 at 10:25:33AM -0600, Jan Beulich wrote:
> In order for a Xen internal PCI device driver to enable MSI on the
> device, we need another hook which the driver can use to create the IRQ
> (doing this in the init_preirq hook is too early, since IRQ code hasn't
> got initialized at that time yet, and doing it in init_postirq is too
> late because at least on x86 smp_intr_init() needs to know the IRQ
> number).
> 
> On x86 this additionally requires a slight ordering change to IRQ
> initialization, to facilitate calling the new hook between basic
> initialization and the call path leading to smp_intr_init().
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

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