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

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Message-ID: <559F8115.1060801@arm.com>
Date:	Fri, 10 Jul 2015 09:23:49 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Suman Tripathi <stripathi@....com>
CC:	Ming Lei <ming.lei@...onical.com>,
	Bob Moore <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Jason Cooper <jason@...edaemon.net>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: ACPI: regression: Failed to initialize GIC IRQ controller

On 10/07/15 09:17, Suman Tripathi wrote:
> On Fri, Jul 10, 2015 at 1:28 PM, Marc Zyngier <marc.zyngier@....com> wrote:
>>
>> On 10/07/15 08:45, Ming Lei wrote:
>>> 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.
>>
>> Isn't that addressed by [1] which Catalin has queued for -rc2?
> 
> 
> I am also seeing the same . But it fixes after I apply the parking
> protocol  patch but that is not upstreamed.

I'm more interested to find out if the patch I mentioned in my original
email fixes it or not. An additional dependency on something that is not
aimed for mainline yet doesn't really help.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...
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