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: <20231002060424.GA781@lst.de>
Date:   Mon, 2 Oct 2023 08:04:24 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jerry Snitselaar <jsnitsel@...hat.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hannes Reinecke <hare@...e.de>,
        Chris Leech <cleech@...hat.com>,
        Christoph Hellwig <hch@....de>,
        Rasesh Mody <rmody@...vell.com>,
        Ariel Elior <aelior@...vell.com>,
        Sudarsana Kalluru <skalluru@...vell.com>,
        Manish Chopra <manishc@...vell.com>,
        Nilesh Javali <njavali@...vell.com>,
        Manish Rangankar <mrangankar@...vell.com>,
        John Meneghini <jmeneghi@...hat.com>,
        Lee Duncan <lduncan@...e.com>,
        Mike Christie <michael.christie@...cle.com>,
        Hannes Reinecke <hare@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] cnic,bnx2,bnx2x: use UIO_MEM_DMA_COHERENT

On Sun, Oct 01, 2023 at 07:22:36AM -0700, Jerry Snitselaar wrote:
> Changes last year to the dma-mapping api to no longer allow __GFP_COMP,
> in particular these two (from the e529d3507a93 dma-mapping pull for
> 6.2):

That's complete BS.  The driver was broken since day 1 and always
ignored the DMA API requirement to never try to grab the page from the
dma coherent allocation because you generally speaking can't.  It just
happened to accidentally work the trivial dma coherent allocator that
is used on x86.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ