[PATCH v4 0/8] Introduce support for RISC-V architecture

[Stanisław Kardach]

On Wed, Jun 8, 2022 at 11:32 AM David Marchand
<david.marchand at redhat.com> wrote:
>
> On Wed, Jun 8, 2022 at 10:41 AM David Marchand
> <david.marchand at redhat.com> wrote:
> > On Tue, May 31, 2022 at 4:14 PM Stanislaw Kardach <kda at semihalf.com> wrote:
> > >
> > > This patchset adds support for building and running DPDK on 64bit RISC-V
> > > architecture. The initial support targets rv64gc (rv64imafdc) ISA and
> > > was tested on SiFive Unmatched development board with the Freedom U740
> > > SoC running Linux (freedom-u-sdk based kernel).
> > > I have tested this codebase using DPDK unit and perf tests as well as
> > > test-pmd, l2fwd and l3fwd examples.
> > > The NIC attached to the DUT was Intel X520-DA2 which uses ixgbe PMD.
> > > On the UIO side, since U740 does not have an IOMMU, I've used igb_uio,
> > > uio_pci_generic and vfio-pci noiommu drivers.
> > >
> > > Functional verification done using meson tests. fast-tests suite passing with
> > > the default config.
> > >
> > > PMD verification done using a Intel x520-DA2 NIC (ixgbe) and the test-pmd
> > > application. Packet transfer checked using all UIO drivers available for
> > > non-IOMMU platforms: uio_pci_generic, vfio-pci noiommu and igb_uio.
> > >
> > > The i40e PMD driver is disabled on RISC-V as the rv64gc ISA has no vector
> > > operations.
> > >
> > > RISCV support is currently limited to Linux as the time measurement frequency
> > > discovery is tied to reading a device-tree node via procfs.
> > >
> > > Clang compilation currently not supported due to issues with missing relocation
> > > relaxation.
> > >
> > > Commit 1 introduces EAL and build system support for RISC-V architecture
> > >    as well as documentation updates.
> > > Commits 2-5 add missing defines and stubs to enable RISC-V operation in
> > >    non-EAL parts.
> > > Commit 6 adds RISC-V specific cpuflags test.
> > > Commits 7-8 add RISC-V build testing to test-meson-builds.sh and github CI.
> >
> > Overall, the series lgtm.
> > It did not get much reviews, but the porting is straightforward and
> > clean enough.
> >
> > I'm waiting for some compilation to finish and I will merge it for 22.07-rc1.
>
> Welcome to RISC-V in DPDK!
>
> Let's work out the last details in -rc2.
> Series applied, thanks.
Awesome, thanks!
>
>
> --
> David Marchand
>