NAK Re: [SRU][Zesty] Support SMMU passthrough using the default domain
manoj.iyer at canonical.com
Thu May 18 15:10:01 UTC 2017
On Thu, May 18, 2017 at 4:24 AM, Paolo Pisati
<paolo.pisati at canonical.com> wrote:
> On Tue, May 16, 2017 at 10:11 PM, Manoj Iyer
> <manoj.iyer at canonical.com> wrote:
>> This patch series adds support for SMMU passthrough using the
>> default domain,
>> the patch series implements a kernel command-line option
>> 1 - Bypass the IOMMU for DMA, 0 - Use IOMMU translation for DMA.
>> This feature
>> is desired on both Qualcomm Centriq 2400 and Thunder-X platforms.
>> The bug report http://bugs.launchpad.net/bugs/1688158 has detailed
>> test results
>> from Qualcomm demonstrating performance improvements using
>> passthrough. I have
>> also tested the kernel on Thundex-X for any regressions, for both
>> boot test and
>> pci passthrough.
>> Please review and consider for SRU.
> Doesn't build.
Could you give me a bit more details? The patches were picked from
linux-next and built for testing.
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