linux-kernel - Re: [PATCH v1 13/16] xen: swiotlb: return error code from xen_swiotlb_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] [day] [month] [year] [list]

Message-ID: <8cccf120-0b4b-4d66-0b96-4114af27a3d1@oracle.com>
Date:   Mon, 19 Jul 2021 16:22:04 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Logan Gunthorpe <logang@...tatee.com>,
        linux-kernel@...r.kernel.org, linux-alpha@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-parisc@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Cc:     Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        Stephen Bates <sbates@...thlin.com>,
        Martin Oliveira <martin.oliveira@...eticom.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v1 13/16] xen: swiotlb: return error code from
 xen_swiotlb_map_sg()


On 7/15/21 12:45 PM, Logan Gunthorpe wrote:
> From: Martin Oliveira <martin.oliveira@...eticom.com>
>
> The .map_sg() op now expects an error code instead of zero on failure.
>
> xen_swiotlb_map_sg() may only fail if xen_swiotlb_map_page() fails, but
> xen_swiotlb_map_page() only supports returning errors as
> DMA_MAPPING_ERROR. So coalesce all errors into EINVAL.


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>