Re: [PATCH 0/8] irqdomain/debugfs: Fix uses of irq_domain_alloc_fwnode

[Thomas Gleixner]

On Tue, 6 Aug 2019, Marc Zyngier wrote:

> I recently noticed that all irq_domain_alloc_fwnode were passing a VA
> to it, which is unfortunate as this is designed to appear in debugfs
> (and we don't like to leak VAs). Disaster was avoided thanks to our
> ____ptrval____ friend, but it remains that the whole thing is pretty
> useless if you have more than a single domain (they all have the same
> name and creation fails).
> 
> In order to sort it out, change all users of irq_domain_alloc_fwnode
> to pass the PA of the irqchip the domain will be associated with. One
> notable exception is the HyperV PCI controller driver which has no PA
> to associate with. This is solved by using a named fwnode instead,
> using the device GUID.
> 
> Finally, irq_domain_alloc_fwnode() is changed to pa a pionter to a PA,
> which can be safely advertised in debugfs.

Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>