netdev - Re: [PATCH v2] riscv: add support for SECCOMP and SECCOMP

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Message-ID: <CALCETrVrQf2B5T6GhoWWuMzrmvTBx9TWxEEN5ZEaXFCiajqMZg@mail.gmail.com>
Date:   Sun, 6 Oct 2019 12:18:57 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Palmer Dabbelt <palmer@...ive.com>,
        Kees Cook <keescook@...omium.org>,
        David Abdurachmanov <david.abdurachmanov@...il.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Oleg Nesterov <oleg@...hat.com>,
        Will Drewry <wad@...omium.org>, Shuah Khan <shuah@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        David Abdurachmanov <david.abdurachmanov@...ive.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>,
        Alexios Zavras <alexios.zavras@...el.com>,
        Anup Patel <Anup.Patel@....com>,
        Vincent Chen <vincentc@...estech.com>,
        Alan Kao <alankao@...estech.com>,
        linux-riscv@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, me@...losedp.com
Subject: Re: [PATCH v2] riscv: add support for SECCOMP and SECCOMP_FILTER

On Fri, Sep 27, 2019 at 1:58 PM Andy Lutomirski <luto@...nel.org> wrote:
>
> On Tue, Sep 3, 2019 at 3:27 PM Palmer Dabbelt <palmer@...ive.com> wrote:
> >
> > On Wed, 28 Aug 2019 10:52:05 PDT (-0700), luto@...capital.net wrote:
> > >
> > >
> > >> On Aug 25, 2019, at 2:59 PM, Kees Cook <keescook@...omium.org> wrote:
> > >>
> > >>> On Thu, Aug 22, 2019 at 01:55:22PM -0700, David Abdurachmanov wrote:
> > >>> This patch was extensively tested on Fedora/RISCV (applied by default on
> > >>> top of 5.2-rc7 kernel for <2 months). The patch was also tested with 5.3-rc
> > >>> on QEMU and SiFive Unleashed board.
> > >>
> > >> Oops, I see the mention of QEMU here. Where's the best place to find
> > >> instructions on creating a qemu riscv image/environment?
> > >
> > > I don’t suppose one of you riscv folks would like to contribute riscv support to virtme?  virtme-run —arch=riscv would be quite nice, and the total patch should be just a couple lines.  Unfortunately, it helps a lot to understand the subtleties of booting the architecture to write those couple lines :)
> >

FYI, it works now:

$ virtme-configkernel --arch=riscv --defconfig
  GEN     Makefile
[...]
Configured.  Build with 'make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- -j4'

$ make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- -j4
[...]

$ virtme-run --kdir=. --arch=riscv64 --mods=auto --root [path to a
riscv filesystem]

This is with virtme master and a qemu-system-riscv64 from qemu git on
my path.  It does *not* work with Fedora 30's qemu.

So now you can all jump on the virtme bandwagon and have an easy way
to test riscv kernels. :)  Although, if you want to run kernel
selftests, you may find the process of actually running them to be
more fun if you use --rodir or --rwdir to map the kernel selftests
directory into the guest.