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

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Message-ID: <CACVXFVPkZYm2i+S3m8B0tixKmTx02psGndo79ehdJxLiz9T92A@mail.gmail.com>
Date:	Fri, 10 Jul 2015 15:45:52 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Bob Moore <robert.moore@...el.com>, Lv Zheng <lv.zheng@...el.com>,
	"Rafael J. Wysocki" <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: 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:

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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