linux-kernel - Re: sg_dma_page_iter offset & length considerations

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] [day] [month] [year] [list]

Date:   Thu, 25 Apr 2019 01:02:43 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Daniel Drake <drake@...lessm.com>
Cc:     jgg@...lanox.com, imre.deak@...el.com,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        linux-mmc@...r.kernel.org, Oleksij Rempel <linux@...pel-privat.de>
Subject: Re: sg_dma_page_iter offset & length considerations

Given that mmc uses block layer helpers to build the sg list you
just have to set the right block layer and DMA layer (in case an
iommu merges during map_sg) dma_boundary paramters (PAGE_SIZE - 1),
and you should get sglists formatted to your requirements, no need
to use an iterator.