ACPI: regression: Failed to initialize GIC IRQ controller

[Lorenzo Pieralisi]

On Fri, Jul 10, 2015 at 03:28:36PM +0100, Moore, Robert wrote:
> 
> 
> > -----Original Message-----
> > From: Ming Lei [mailto:ming.lei at canonical.com]
> > Sent: Friday, July 10, 2015 12:46 AM
> > To: Moore, Robert; Zheng, Lv; Wysocki, Rafael J
> > Cc: Linux Kernel Mailing List; linux-arm-kernel; Thomas Gleixner; Jason
> > Cooper; Hanjun Guo
> > Subject: ACPI: regression: Failed to initialize GIC IRQ controller
> > 
> > Hi,
> > 
> > Commit 0cff8dc0099f6d4f(ACPICA: ACPI 6.0: Add changes for MADT table.)
> > causes the following failure on APM mustang board(arm64) when booting via
> > UEFI and ACPI:
> 
> 
> I would be interested to know just what exactly about this change broke things.

struct acpi_madt_generic_interrupt gained 4 bytes, 4 too many for ACPI
on ARM64 to boot with 5.1 tables.

From now onwards we have to test acpica changes against the arm64 kernel
tree, this must not happen again.

See below:

https://lkml.org/lkml/2015/7/6/876

Thanks,
Lorenzo

> Bob
> 
> 
> 
> > 
> > No valid GICC entries exist
> > ACPI: Failed to initialize GIC IRQ controller Kernel panic - not syncing:
> > No interrupt controller found.
> > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.2.0-rc1+ #45 Hardware name:
> > APM X-Gene Mustang board (DT) Call trace:
> > [<ffffffc000089b94>] dump_backtrace+0x0/0x12c [<ffffffc000089cd0>]
> > show_stack+0x10/0x1c [<ffffffc0005fac18>] dump_stack+0x8c/0xdc
> > [<ffffffc0005f7218>] panic+0xe4/0x220 [<ffffffc00082631c>]
> > init_IRQ+0x24/0x30 [<ffffffc00082486c>] start_kernel+0x274/0x3d8 ---[ end
> > Kernel panic - not syncing: No interrupt controller found.
> > 
> > 
> > Thanks,
> > Ming
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