linux-kernel - RE: ACPI: regression: Failed to initialize GIC IRQ controller

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Date:	Fri, 10 Jul 2015 14:28:36 +0000
From:	"Moore, Robert" <robert.moore@...el.com>
To:	Ming Lei <ming.lei@...onical.com>,
	"Zheng, Lv" <lv.zheng@...el.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Hanjun Guo <hanjun.guo@...aro.org>
Subject: RE: ACPI: regression: Failed to initialize GIC IRQ controller



> -----Original Message-----
> From: Ming Lei [mailto:ming.lei@...onical.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.
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