linux-kernel - [PATCH 4/4] kunit: tool: Disable broken options for --alltests

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Message-Id: <20220218075727.2737623-5-davidgow@google.com>
Date:   Fri, 18 Feb 2022 15:57:27 +0800
From:   David Gow <davidgow@...gle.com>
To:     Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>
Cc:     David Gow <davidgow@...gle.com>, linux-um@...ts.infradead.org,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-rdma@...r.kernel.org, x86@...nel.org, felix.kuehling@....com,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] kunit: tool: Disable broken options for --alltests

There are a number of Kconfig options which break compilation under UML with
allyesconfig.  As kunit_tool's --alltests option is based on allyesconfig and
UML, we need to update the list of broken options to make --alltests build
again.

Note that, while this does build again, it still segfaults on startup,
so more work remains to be done.

They are:
- CONFIG_VFIO_PCI: Needs ioport_map/ioport_unmap.
- CONFIG_INFINIBAND_RDMAVT: Needs cpuinfo_x86 and __copy_user_nocache
- CONFIG_BNXT: Failing under UML with -Werror
ERROR:root:../drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c: In function ‘bnxt_ptp_enable’:
../drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:400:43: error: array subscript 255 is above array bounds of ‘struct pps_pin[4]’ [-Werror=array-bounds]
  400 |                         ptp->pps_info.pins[pin_id].event = BNXT_PPS_EVENT_EXTERNAL;
      |                         ~~~~~~~~~~~~~~~~~~^~~~~~~~
- CONFIG_PATA_CS5535: Needs MSR access (__tracepoint_{read,write}_msr)
- CONFIG_VDPA: Enables CONFIG_DMA_OPS, which is unimplemented. ('dma_ops' is not defined)

These are all issues which should be investigated properly and the
corresponding options either fixed or disabled under UML. Having this
list of broken options should act as a good to-do list here, and will
allow these issues to be worked on independently, and other tests to
work in the meantime.

Signed-off-by: David Gow <davidgow@...gle.com>
---
 tools/testing/kunit/configs/broken_on_uml.config | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/kunit/configs/broken_on_uml.config b/tools/testing/kunit/configs/broken_on_uml.config
index 690870043ac0..546482b0bc4d 100644
--- a/tools/testing/kunit/configs/broken_on_uml.config
+++ b/tools/testing/kunit/configs/broken_on_uml.config
@@ -42,3 +42,8 @@
 # CONFIG_ADI_AXI_ADC is not set
 # CONFIG_DEBUG_PAGEALLOC is not set
 # CONFIG_PAGE_POISONING is not set
+# CONFIG_VFIO_PCI is not set
+# CONFIG_INFINIBAND_RDMAVT is not set
+# CONFIG_BNXT is not set
+# CONFIG_PATA_CS5535 is not set
+# CONFIG_VDPA is not set
-- 
2.35.1.265.g69c8d7142f-goog