linux-kernel - Re: [PATCH v2] selftests: kvm: Adding config fragments

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Message-ID: <CA+G9fYsj79w5t9F4P180DTFvcjxcoxVW5+SDhEK3DESvTGw4zQ@mail.gmail.com>
Date:   Fri, 9 Aug 2019 12:57:42 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Andrew Jones <drjones@...hat.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>,
        open list <linux-kernel@...r.kernel.org>,
        sean.j.christopherson@...el.com,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, kvm list <kvm@...r.kernel.org>
Subject: Re: [PATCH v2] selftests: kvm: Adding config fragments

On Thu, 8 Aug 2019 at 20:40, Andrew Jones <drjones@...hat.com> wrote:
>
> On Thu, Aug 08, 2019 at 01:31:40PM +0100, Naresh Kamboju wrote:
> > selftests kvm all test cases need pre-required kernel configs for the
> > tests to get pass.
> >
> > The KVM tests are skipped without these configs:
> >
> >         dev_fd = open(KVM_DEV_PATH, O_RDONLY);
> >         if (dev_fd < 0)
> >                 exit(KSFT_SKIP);
> >
> > Signed-off-by: Naresh Kamboju <naresh.kamboju@...aro.org>
> > ---
> >  tools/testing/selftests/kvm/config | 3 +++
> >  1 file changed, 3 insertions(+)
> >  create mode 100644 tools/testing/selftests/kvm/config
> >
> > diff --git a/tools/testing/selftests/kvm/config b/tools/testing/selftests/kvm/config
> > new file mode 100644
> > index 000000000000..63ed533f73d6
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/config
> > @@ -0,0 +1,3 @@
> > +CONFIG_KVM=y
> > +CONFIG_KVM_INTEL=y
> > +CONFIG_KVM_AMD=y
> > --
> > 2.17.1
> >
>
> What does the kselftests config file do? I was about to complain that this
> would break compiling on non-x86 platforms, but 'make kselftest' and other
> forms of invoking the build work fine on aarch64 even with this config
> file. So is this just for documentation? If so, then its still obviously
> wrong for non-x86 platforms. The only config that makes sense here is KVM.
> If the other options need to be documented for x86, then should they get
> an additional config file? tools/testing/selftests/kvm/x86_64/config?

Addressed your comments and sent out v3 patch.
Thank for the review.

- Naresh