[PATCH 12/14] arm64: kill acpi_set_mailbox_entry()
lorenzo.pieralisi at arm.com
Tue Mar 21 11:37:55 PDT 2017
On Tue, Mar 21, 2017 at 06:15:54PM +0000, Mark Rutland wrote:
> On Tue, Mar 21, 2017 at 06:00:40PM +0000, Lorenzo Pieralisi wrote:
> > On Fri, Mar 10, 2017 at 11:04:49AM +0000, Mark Rutland wrote:
> > > +static struct parking_protocol_mailbox __iomem *mailboxes[NR_CPUS];
> > Nit: If I am not mistaken it can be made a percpu pointer.
> Unfortunately, we don't set up the percpu areas until we know how many
> CPUs are possible (i.e. after we've parsed the MADT).
> The flow looks like:
> acpi_map_gic_cpu_interface() // setup cpu mailbox here
The mailbox data yes, not the pointer at which it is mapped (which
is what gets stashed in mailboxes).
> setup_per_cpu_areas() // percpu available here
> Otherwise, I completely agree that a percpu pointer would be the right
> thing to do.
Yes but the only purpose of the mailboxes array is to stash the
ioremap'ed VA after a secondary has been booted (through
cpu_ops->cpu_boot which is called to boot secondaries when per_cpu areas
are already set-up) to run checks in cpu_postboot() method, hence my
> > Other than that:
> > Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> I take it this stands, given the above?
Yes, thanks for making this change.
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