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From: "Moore, Robert" <robert.moore@intel.com>
To: Ming Lei <ming.lei@canonical.com>, "Zheng, Lv" <lv.zheng@intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@intel.com>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jason Cooper <jason@lakedaemon.net>,
        Hanjun Guo <hanjun.guo@linaro.org>
Subject: RE: ACPI: regression: Failed to initialize GIC IRQ controller
Thread-Topic: ACPI: regression: Failed to initialize GIC IRQ controller
Thread-Index: AQHQuuSGbkQEjEXFHUKyyD3LW1itcZ3Uw2TA
Date: Fri, 10 Jul 2015 14:28:36 +0000
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> -----Original Message-----
> From: Ming Lei [mailto:ming.lei@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.
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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