linux-kernel - Re: [PATCH v5 12/24] nvme-pci: convert to using dma_map

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]

Date:   Fri, 28 Jan 2022 09:13:11 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Logan Gunthorpe <logang@...tatee.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [PATCH v5 12/24] nvme-pci: convert to using dma_map_sgtable()

On 1/27/22 4:26 PM, Logan Gunthorpe wrote:
> External email: Use caution opening links or attachments
> 
> 
> The dma_map operations now support P2PDMA pages directly. So remove
> the calls to pci_p2pdma_[un]map_sg_attrs() and replace them with calls
> to dma_map_sgtable().
> 
> dma_map_sgtable() returns more complete error codes than dma_map_sg()
> and allows differentiating EREMOTEIO errors in case an unsupported
> P2PDMA transfer is requested. When this happens, return BLK_STS_TARGET
> so the request isn't retried.
> 
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
> Reviewed-by: Max Gurtovoy <mgurtovoy@...dia.com>
> ---

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>