From: Ben Gardon <bgardon@google.com>
To: Axel Rasmussen <axelrasmussen@google.com>
Cc: Aaron Lewis <aaronlewis@google.com>,
Alexander Graf <graf@amazon.com>,
Andrew Jones <drjones@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Emanuele Giuseppe Esposito <eesposit@redhat.com>,
Eric Auger <eric.auger@redhat.com>,
Jacob Xu <jacobhxu@google.com>,
Makarand Sonare <makarandsonare@google.com>,
Oliver Upton <oupton@google.com>,
Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Shuah Khan <shuah@kernel.org>,
Yanan Wang <wangyanan55@huawei.com>, kvm <kvm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v2 03/10] KVM: selftests: print a message when skipping KVM tests
Date: Wed, 19 May 2021 14:49:53 -0700 [thread overview]
Message-ID: <CANgfPd_WV+8bAHucE=81eFTEEPv5Q-2ZjQ_beKhZyQnt4PX57Q@mail.gmail.com> (raw)
In-Reply-To: <20210519200339.829146-4-axelrasmussen@google.com>
On Wed, May 19, 2021 at 1:03 PM Axel Rasmussen <axelrasmussen@google.com> wrote:
>
> Previously, if this check failed, we'd just exit quietly with no output.
> This can be confusing, so print out a short message indicating why the
> test is being skipped.
>
> Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
> ---
> tools/testing/selftests/kvm/lib/kvm_util.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
> index f05ca919cccb..0d6ddee429b9 100644
> --- a/tools/testing/selftests/kvm/lib/kvm_util.c
> +++ b/tools/testing/selftests/kvm/lib/kvm_util.c
> @@ -53,8 +53,10 @@ int kvm_check_cap(long cap)
> int kvm_fd;
>
> kvm_fd = open(KVM_DEV_PATH, O_RDONLY);
> - if (kvm_fd < 0)
> + if (kvm_fd < 0) {
> + print_skip("KVM not available, errno: %d", errno);
> exit(KSFT_SKIP);
> + }
This is a wonderful change. I believe this will only be hit if KVM is
built as a module and that module has not yet been loaded, so this
message could also suggest that the user check if the KVM / KVM
arch/vendor specific module has been loaded.
>
> ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, cap);
> TEST_ASSERT(ret != -1, "KVM_CHECK_EXTENSION IOCTL failed,\n"
> --
> 2.31.1.751.gd2f1c929bd-goog
>
next prev parent reply other threads:[~2021-05-19 21:50 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-19 20:03 [PATCH v2 00/10] KVM: selftests: exercise userfaultfd minor faults Axel Rasmussen
2021-05-19 20:03 ` [PATCH v2 01/10] KVM: selftests: trivial comment/logging fixes Axel Rasmussen
2021-05-19 21:41 ` Ben Gardon
2021-05-19 20:03 ` [PATCH v2 02/10] KVM: selftests: simplify setup_demand_paging error handling Axel Rasmussen
2021-05-19 21:45 ` Ben Gardon
2021-05-19 22:14 ` Axel Rasmussen
2021-05-19 22:23 ` Ben Gardon
2021-05-24 13:25 ` Paolo Bonzini
2021-05-19 20:03 ` [PATCH v2 03/10] KVM: selftests: print a message when skipping KVM tests Axel Rasmussen
2021-05-19 21:49 ` Ben Gardon [this message]
2021-05-24 13:23 ` Paolo Bonzini
2021-05-19 20:03 ` [PATCH v2 04/10] KVM: selftests: compute correct demand paging size Axel Rasmussen
2021-05-19 21:51 ` Ben Gardon
2021-05-19 20:03 ` [PATCH v2 05/10] KVM: selftests: allow different backing source types Axel Rasmussen
2021-05-19 21:53 ` Ben Gardon
2021-05-19 20:03 ` [PATCH v2 06/10] KVM: selftests: refactor vm_mem_backing_src_type flags Axel Rasmussen
2021-05-19 22:02 ` Ben Gardon
2021-05-19 22:16 ` Axel Rasmussen
2021-05-19 22:25 ` Ben Gardon
2021-05-19 20:03 ` [PATCH v2 07/10] KVM: selftests: add shmem backing source type Axel Rasmussen
2021-05-19 22:03 ` Ben Gardon
2021-05-19 20:03 ` [PATCH v2 08/10] KVM: selftests: create alias mappings when using shared memory Axel Rasmussen
2021-05-25 23:49 ` David Matlack
2021-05-26 17:22 ` Axel Rasmussen
2021-05-26 18:31 ` Paolo Bonzini
2021-05-19 20:03 ` [PATCH v2 09/10] KVM: selftests: allow using UFFD minor faults for demand paging Axel Rasmussen
2021-05-19 22:20 ` Ben Gardon
2021-05-19 22:34 ` Axel Rasmussen
2021-05-24 13:36 ` Paolo Bonzini
2021-05-19 20:03 ` [PATCH v2 10/10] KVM: selftests: add shared hugetlbfs backing source type Axel Rasmussen
2021-05-19 22:22 ` Ben Gardon
2021-05-24 13:38 ` [PATCH v2 00/10] KVM: selftests: exercise userfaultfd minor faults Paolo Bonzini
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