linux-kernel - Re: next-0519 on thinkpad x60: sound related? window manager crash

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Date:   Tue, 9 Jun 2020 15:16:38 +0200
From:   Jaroslav Kysela <perex@...ex.cz>
To:     Christoph Hellwig <hch@....de>, Takashi Iwai <tiwai@...e.de>
Cc:     David Rientjes <rientjes@...gle.com>,
        "Alex Xu (Hello71)" <alex_y_xu@...oo.ca>,
        alsa-devel@...a-project.org, bp@...en8.de, hch@...radead.org,
        hpa@...or.com, linux-kernel@...r.kernel.org, mingo@...hat.com,
        Pavel Machek <pavel@....cz>, tglx@...utronix.de,
        tiwai@...e.com, x86@...nel.org
Subject: Re: next-0519 on thinkpad x60: sound related? window manager crash

Dne 09. 06. 20 v 13:49 Christoph Hellwig napsal(a):
> On Tue, Jun 09, 2020 at 01:45:34PM +0200, Takashi Iwai wrote:
>> Yes, for the sound stuff, something below should make things working.
>> But it means that we'll lose the SG-buffer allocation and the
>> allocation of large buffers might fail on some machines.
> 
> We crossed lines there.  In general due to better memory compaction and
> CMA we have better chances to get larger contiguous allocations these
> days, so this might not be too much of an issue in practice.
> 

But turning off the SG DMA scheme seems like a step back. Would be possible to 
fix this kind of memory mapping?

					Jaroslav


-- 
Jaroslav Kysela <perex@...ex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.