linux-kernel - Re: [PATCH] dma-pool: Do not allocate pool memory from CMA

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: <20200724162709.GA15051@lst.de>
Date:   Fri, 24 Jul 2020 18:27:09 +0200
From:   Christoph Hellwig <hch@....de>
To:     Amit Pundir <amit.pundir@...aro.org>
Cc:     Christoph Hellwig <hch@....de>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        David Rientjes <rientjes@...gle.com>,
        linux-rpi-kernel@...ts.infradead.org, jeremy.linton@....com,
        iommu@...ts.linux-foundation.org,
        lkml <linux-kernel@...r.kernel.org>,
        John Stultz <john.stultz@...aro.org>,
        Sumit Semwal <sumit.semwal@...aro.org>
Subject: Re: [PATCH] dma-pool: Do not allocate pool memory from CMA

On Fri, Jul 24, 2020 at 09:49:17PM +0530, Amit Pundir wrote:
> On Fri, 24 Jul 2020 at 19:11, Christoph Hellwig <hch@....de> wrote:
> >
> > Yes, the iommu is an interesting case, and the current code is
> > wrong for that.  Can you try the patch below?  It contains a modified
> > version of Nicolas' patch to try CMA again for the expansion and a new
> > (for now hackish) way to not apply the addressability check for dma-iommu
> > allocations.
> 
> Thank you. The below patch worked on today's linux/master (f37e99aca03f).

Ok, I'll try to massage it into a few cleaner patches over the weekend
and will send them to you again for retesting.

Thanks a lot for your patience!