linux-kernel - Re: [x86/mm/pat, drivers/media/ivtv] WARNING: CPU: 0 PID: 1 at drivers/media/pci/ivtv/ivtvfb.c:1270 ivtvfb

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Message-ID: <20150622063647.GA24434@gmail.com>
Date:	Mon, 22 Jun 2015 08:36:47 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...e.de>
Cc:	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Fengguang Wu <fengguang.wu@...el.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	LKP <lkp@...org>
Subject: Re: [x86/mm/pat, drivers/media/ivtv]  WARNING: CPU: 0 PID: 1 at
 drivers/media/pci/ivtv/ivtvfb.c:1270 ivtvfb_init()


* Borislav Petkov <bp@...e.de> wrote:

> On Sun, Jun 21, 2015 at 10:23:48PM +0200, Luis R. Rodriguez wrote:

> > Nope, well the driver requires huge amounts of work to work with PAT, that 
> > work will likely never be done, so hence the warning. Its our compromise as 
> > only 2 drivers will live on Linux like this and they are both old and rare.
> 
> Hmm, so wasn't the possibility discussed to fail loading instead and issue a 
> single-line pr_warn() when PAT is enabled? Those big WARN() splats will only 
> confuse people...

Absolutely - they are a regression.

Thanks,

	Ingo
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