linux-kernel - Re: [PATCH v2 0/6] Remove default DMA window before creating DDW

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: <3d821b4d2a348519e212f44108662da39a9fbdbb.camel@gmail.com>
Date:   Wed, 24 Jun 2020 12:54:27 -0300
From:   Leonardo Bras <leobras.c@...il.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        Ram Pai <linuxram@...ibm.com>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] Remove default DMA window before creating DDW

On Wed, 2020-06-24 at 03:24 -0300, Leonardo Bras wrote:
> Patch #5:
> Instead of destroying the created DDW if it doesn't map the whole
> partition, make use of it instead of the default DMA window.
> 
> Patch #6:
> Changes the way iommu_bypass_supported_pSeriesLP() check for 
> iommu_bypass: instead of checking the address returned by enable_ddw(),
> it checks a new output value that reflects if the DDW created maps
> the whole partition.

Patches #5 and #6 were sent more as a RFC, but since they depend on the
series, I decided adding them here.