linux-kernel - Re: [PATCH] dma-mapping: Relax warnings for per-device areas

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ac14e13b-82fb-c623-6dcb-4c944120eb24@infradead.org>
Date:   Wed, 18 Jul 2018 14:55:59 -0700
From:   Geoff Levand <geoff@...radead.org>
To:     Fredrik Noring <noring@...rew.org>, Christoph Hellwig <hch@....de>
Cc:     Robin Murphy <robin.murphy@....com>, m.szyprowski@...sung.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        JuergenUrban@....de
Subject: Re: [PATCH] dma-mapping: Relax warnings for per-device areas

Hi,

On 07/17/2018 09:33 AM, Fredrik Noring wrote:
>>> Here are three other regressions related to the coherent mask WARN_ON_ONCE:
>>
>> They are a pretty strong indication that yes, you should really set
>> the coherent mask if you ever do coherent allocations..
> 
> I'm unfortunately unfamiliar with the USB drivers for the PS3. Geoff, what
> do you think about setting a coherent mask?

I guess we need to add a dma_set_coherent_mask() call in the driver
probe routines.  I'll send out a patch.

-Geoff