linux-kernel - Re: PNP PS/2 probing racy?

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Message-ID: <20100128162248.GF14636@basil.fritz.box>
Date:	Thu, 28 Jan 2010 17:22:48 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: PNP PS/2 probing racy?

On Thu, Jan 28, 2010 at 07:57:47AM -0800, Dmitry Torokhov wrote:
>> Hi,
>>
>> I noticed that on one test system of machine when booting the same
>> kernel I get:
>>
>> PNP: No PS/2 controller found. Probing ports directly.
>> serio: i8042 KBD port at 0x60,0x64 irq 1
>> serio: i8042 AUX port at 0x60,0x64 irq 12
>>
>> and sometimes on another boot
>>
>> PNP: PS/2 Controller [PNP0303:PS2K,PNP0f03:PS2M] at 0x60,0x64 irq 1,12
>>
>> Since I presume the BIOS does not change, is it possible the Linux
>> procedure for this PNP probe is racy? I haven't checked the code so far.
>>
>
> Are you using KVM with that box by any chance?

Yes, it uses a KVM, but the console was always on it.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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