Re: [dpdk-dev] [PATCH 2/6] net/hns3: fix compiling error for using SVE algorithm

[Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>]

<snip>

> Subject: Re: [PATCH 2/6] net/hns3: fix compiling error for using SVE algorithm
> 
> On Mon, Mar 29, 2021 at 8:32 PM Aaron Conole <aconole@redhat.com>
> wrote:
> > Ferruh Yigit <ferruh.yigit@intel.com> writes:
> > > This is a very obvious build error, I am concerned how this is
> > > released. Do you have any internal testing?
> > >
> > > + Aaron & Honnappa,
> > >
> > > If we can have a build test in our public CI with SVE?
> >
> > Maybe it's possible - we might need to expand the aarch64 cross builds
> > with a bit of extra information.  I'm not sure which compiler is
> > needed, though.  Currently, we install whatever ubuntu18.04 is
> > providing - I don't know if it has the SVE extensions needed.
> > Honnappa/ARM folks can provide more information that way - though I
> > would expect it's just a setting that can be changed in the
> > host_machine or properties section of the cross-config file.
> >
> > If that's known (maybe we need to use the thunderx2 config or
> > something else?  I don't know too much about enabling compiler support
> > for SVE), then we should probably hook it up.
Since, Kunpeng SoC has SVE enabled, we should have a Kunpeng config [1]. We could use that config to compile the code, through cross compile or through SoC target option for meson scripts[2].

[1] http://patches.dpdk.org/project/dpdk/patch/1616808435-25166-2-git-send-email-oulijun@huawei.com/
[2] http://patches.dpdk.org/project/dpdk/patch/1612361037-12746-3-git-send-email-juraj.linkes@pantheon.tech/

> 
> Last time I tried SVE builds, I needed a gcc 10 + tweaking cross compiler
> config.
> http://inbox.dpdk.org/dev/CAJFAV8ywp0qA7qg7cGAhb1ULY72AwjZM6foDB
> ej4roYNE8Oy5Q@mail.gmail.com/
> 
> Ruifeng had replied there was a gcc 10 for Ubuntu.
> Not sure how others compile with SVE.
> 
> --
> David Marchand