May 2024 - Linux-kselftest-mirror

Kernel Testing & Dependability Micro-Conference at LPC 2024

by Guillaume Tucker

Hello, We're pleased to announce the return of the Kernel Testing & Dependability Micro-Conference at Linux Plumbers 2024: https://lpc.events/event/18/contributions/1665/ You can already submit proposals by selecting the micro-conf in the Track drop-down list: https://lpc.events/login/?next=/event/18/abstracts/%23submit-abstract Please note that the deadline for submissions is *Sunday 16th June* The event description contains a list of suggested topics inherited from past editions. Is there anything in particular you would like to see discussed this year? Knowing people's interests helps with triaging proposals and making the micro-conf as relevant as possible. See you there! Thanks, Guillaume & Shuah & Sasha

9 months, 1 week

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[PATCH] list: test: add the missing MODULE_DESCRIPTION() macro

by Jeff Johnson

make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/list-test.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson(a)quicinc.com> --- lib/list-test.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/list-test.c b/lib/list-test.c index 0cc27de9cec8..e87b9941206a 100644 --- a/lib/list-test.c +++ b/lib/list-test.c @@ -1499,4 +1499,5 @@ static struct kunit_suite klist_test_module = { kunit_test_suites(&list_test_module, &hlist_test_module, &klist_test_module); +MODULE_DESCRIPTION("KUnit test for the Kernel Linked-list structures"); MODULE_LICENSE("GPL v2"); --- base-commit: b050496579632f86ee1ef7e7501906db579f3457 change-id: 20240531-md-lib-list-test-679830e738cc

9 months, 1 week

2
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[PATCH bpf-next 0/5] use network helpers, part 6

by Geliang Tang

From: Geliang Tang <tanggeliang(a)kylinos.cn> For moving dctcp test dedicated code out of do_test() into test_dctcp(). This patchset adds a new helper start_test() in bpf_tcp_ca.c to refactor do_test(). Address Martin's comments for the previous series. Geliang Tang (5): selftests/bpf: Use connect_to_fd_opts in do_test in bpf_tcp_ca selftests/bpf: Add start_test helper in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp_fallback in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp in bpf_tcp_ca selftests/bpf: Drop useless arguments of do_test in bpf_tcp_ca .../selftests/bpf/prog_tests/bpf_tcp_ca.c | 140 +++++++++++------- 1 file changed, 85 insertions(+), 55 deletions(-) -- 2.43.0

9 months, 1 week

2
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[PATCH v5 00/16] selftests/resctrl: resctrl_val() related cleanups & improvements

by Ilpo Järvinen

Hi all, This series does a number of cleanups into resctrl_val() and generalizes it by removing test name specific handling from the function. Hopefully these reach also Shuah successfully as I've recently seen rejects for mail from @linux.intel.com to gmail addresses. v5: - Open mem bw file only once and use rewind(). - Add \n to mem bw file read to allow reading fresh values from the file. - Return 0 if create_grp() is given NULL grp_name (matches the original behavior). Mention this in function's kerneldoc. - Cast pid_t to int before printing with %d. - Caps/typo fixes to kerneldoc and commit messages. - Use imperative tone in commit messages and improve them based on points that came up during review. v4: - Merged close fix into IMC READ+WRITE rework patch - Add loop to reset imc_counters_config fds to -1 to be able know which need closing - Introduce perf_close_imc_mem_bw() to close fds - Open resctrl mem bw file (twice) beforehand to avoid opening it during the test - Remove MBM .mongrp setup - Remove mongrp from CMT test v3: - Rename init functions to <testname>_init() - Replace for loops with READ+WRITE statements for clarity - Don't drop Return: entry from perf_open_imc_mem_bw() func comment - New patch: Fix closing of IMC fds in case of error - New patch: Make "bandwidth" consistent in comments & prints - New patch: Simplify mem bandwidth file code - Remove wrong comment - Changed grp_name check to return -1 on fail (internal sanity check) v2: - Resolved conflicts with kselftest/next - Spaces -> tabs correction Ilpo Järvinen (16): selftests/resctrl: Fix closing IMC fds on error and open-code R+W instead of loops selftests/resctrl: Calculate resctrl FS derived mem bw over sleep(1) only selftests/resctrl: Make "bandwidth" consistent in comments & prints selftests/resctrl: Consolidate get_domain_id() into resctrl_val() selftests/resctrl: Use correct type for pids selftests/resctrl: Cleanup bm_pid and ppid usage & limit scope selftests/resctrl: Rename measure_vals() to measure_mem_bw_vals() & document selftests/resctrl: Simplify mem bandwidth file code for MBA & MBM tests selftests/resctrl: Add ->measure() callback to resctrl_val_param selftests/resctrl: Add ->init() callback into resctrl_val_param selftests/resctrl: Simplify bandwidth report type handling selftests/resctrl: Make some strings passed to resctrlfs functions const selftests/resctrl: Convert ctrlgrp & mongrp to pointers selftests/resctrl: Remove mongrp from MBA test selftests/resctrl: Remove mongrp from CMT test selftests/resctrl: Remove test name comparing from write_bm_pid_to_resctrl() tools/testing/selftests/resctrl/cache.c | 10 +- tools/testing/selftests/resctrl/cat_test.c | 5 +- tools/testing/selftests/resctrl/cmt_test.c | 22 +- tools/testing/selftests/resctrl/mba_test.c | 26 +- tools/testing/selftests/resctrl/mbm_test.c | 26 +- tools/testing/selftests/resctrl/resctrl.h | 49 ++- tools/testing/selftests/resctrl/resctrl_val.c | 364 ++++++++---------- tools/testing/selftests/resctrl/resctrlfs.c | 67 ++-- 8 files changed, 290 insertions(+), 279 deletions(-) -- 2.39.2

9 months, 2 weeks

3
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[PATCH v5 0/8] Support Zve32[xf] and Zve64[xfd] Vector subextensions

by Andy Chiu

The series composes of two parts. The first part Specifically, patch 1 adds a comment at a callsite of riscv_setup_vsize to clarify how vlenb is observed by the system. Patch 2 fixes the issue by failing the boot process of a secondary core if vlenb mismatches. Here is the organization of the series: - Patch 1, 2 provide a fix for mismatching vlen problem [1]. The solution is to fail secondary cores if their vlenb is not the same as the boot core. - Patch 3 is a cleanup for introducing ZVE* Vector subextensions. It gives the obsolete ISA parser the ability to expand ISA extensions for sigle letter extensions. - Patch 4, 5, 6 introduce Zve32x, Zve32f, Zve64x, Zve64f, Zve64d for isa parsing and hwprobe, and document about it. - Patch 7 makes has_vector() check against ZVE32X instead of V, so most userspace Vector supports will be available for bare ZVE32X. - Patch 8 updates the prctl test so that it runs on ZVE32X. The series is tested on a QEMU and verified that booting, Vector programs context-switch, signal, ptrace, prctl interfaces works when we only report partial V from the ISA. Note that the signal test was performed after applying the commit c27fa53b858b ("riscv: Fix vector state restore in rt_sigreturn()") This patch should be able to apply on risc-v for-next branch on top of the commit 0a16a1728790 ("riscv: select ARCH_HAS_FAST_MULTIPLIER") [1]: https://lore.kernel.org/all/20240228-vicinity-cornstalk-4b8eb5fe5730@spud/T… Changes in v5: - Rebase on top of for-next - Update comments (1, 7) - Reorder the documentation patch to the front of patches that it documents about. (5->4) - Include ZVE64D to the list, which single letter V implies (6) - Remove ZVE32F_IMPLY_LIST (5) - Change the semantic of has_vector() thus rewrite patch 7 - Remove the patch that fixes integer promotion as it is merged else place (8) - Link to v4: https://lore.kernel.org/r/20240412-zve-detection-v4-0-e0c45bb6b253@sifive.c… Changes in v4: - Add a patch to trigger prctl test on ZVE32X (9) - Add a patch to fix integer promotion bug in hwprobe (8) - Fix a build fail on !CONFIG_RISCV_ISA_V (7) - Add more comment in the assembly code change (2) - Link to v3: https://lore.kernel.org/r/20240318-zve-detection-v3-0-e12d42107fa8@sifive.c… Changelog v3: - Include correct maintainers and mailing list into CC. - Cleanup isa string parser code (3) - Adjust extensions order and name (4, 5) - Refine commit message (6) Changelog v2: - Update comments and commit messages (1, 2, 7) - Refine isa_exts[] lists for zve extensions (4) - Add a patch for dt-binding (5) - Make ZVE* extensions depend on has_vector(ZVE32X) (6, 7) --- --- Andy Chiu (8): riscv: vector: add a comment when calling riscv_setup_vsize() riscv: smp: fail booting up smp if inconsistent vlen is detected riscv: cpufeature: call match_isa_ext() for single-letter extensions dt-bindings: riscv: add Zve32[xf] Zve64[xfd] ISA extension description riscv: cpufeature: add zve32[xf] and zve64[xfd] isa detection riscv: hwprobe: add zve Vector subextensions into hwprobe interface riscv: vector: adjust minimum Vector requirement to ZVE32X selftest: run vector prctl test for ZVE32X Documentation/arch/riscv/hwprobe.rst | 15 ++++++ .../devicetree/bindings/riscv/extensions.yaml | 30 +++++++++++ arch/riscv/include/asm/hwcap.h | 5 ++ arch/riscv/include/asm/vector.h | 10 ++-- arch/riscv/include/uapi/asm/hwprobe.h | 5 ++ arch/riscv/kernel/cpufeature.c | 60 +++++++++++++++++++--- arch/riscv/kernel/head.S | 19 ++++--- arch/riscv/kernel/smpboot.c | 14 +++-- arch/riscv/kernel/sys_hwprobe.c | 11 +++- arch/riscv/kernel/vector.c | 5 +- arch/riscv/lib/uaccess.S | 2 +- .../testing/selftests/riscv/vector/vstate_prctl.c | 6 +-- 12 files changed, 151 insertions(+), 31 deletions(-) --- base-commit: 0a16a172879012c42f55ae8c2883e17c1e4e388f change-id: 20240318-zve-detection-50106d2da527 Best regards, -- Andy Chiu <andy.chiu(a)sifive.com>

9 months, 2 weeks

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[PATCH] KVM: selftest: Add family and model check for zen4 in PMU filter test

by Manali Shukla

PMU event filter test fails on zen4 architecture because of unavailability of family and model check for zen4 in use_amd_pmu(). So, add family and model check for zen4 architecture in use_amd_pmu(). Signed-off-by: Manali Shukla <manali.shukla(a)amd.com> --- .../testing/selftests/kvm/x86_64/pmu_event_filter_test.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c index 3c85d1ae9893..c212ca4ffa72 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c @@ -374,6 +374,12 @@ static bool is_zen3(uint32_t family, uint32_t model) return family == 0x19 && model <= 0x0f; } +static bool is_zen4(uint32_t family, uint32_t model) +{ + return family == 0x19 && ((model >= 0x10 && model <= 0x1f) || + (model >= 0xa0 && model <= 0xaf)); +} + /* * Determining AMD support for a PMU event requires consulting the AMD * PPR for the CPU or reference material derived therefrom. The AMD @@ -390,7 +396,8 @@ static bool use_amd_pmu(void) return host_cpu_is_amd && (is_zen1(family, model) || is_zen2(family, model) || - is_zen3(family, model)); + is_zen3(family, model) || + is_zen4(family, model)); } /* -- 2.34.1

9 months, 2 weeks

2
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[PATCH v4 0/7] mm: multi-gen LRU: Walk secondary MMU page tables while aging

by James Houghton

This patchset makes it possible for MGLRU to consult secondary MMUs while doing aging, not just during eviction. This allows for more accurate reclaim decisions, which is especially important for proactive reclaim. This series makes the necessary MMU notifier changes to MGLRU and then includes optimizations on top of that. This series also now includes changes to access_tracking_perf_test to verify that aging works properly for pages that are mainly used by KVM. access_tracking_perf_test also has a mode (-p) to check performance of MGLRU aging while the VM is faulting memory in. Here are some results: Testing MGLRU aging while vCPUs are faulting in memory on x86 with the TDP MMU. THPs disabled. The test results varied a decent amount from run to run. I did my best to take representative averages, but nonetheless, the big picture is the important part. Main takeaways: - With the optimizations, the workload is much less impacted by the presence of aging. - With the optimizations, MGLRU is able to do aging much more quickly, especially at 8+ vCPUs on my machine. ./access_tracking_perf_test -p -l -b 1G -v $N_VCPUS # 1G per vCPU num_vcpus vcpu wall time aging avg pass time 1 (no aging) 0.878822016 n/a 1 (no opt) 0.938250568 0.008236007 1 (opt) 0.912270190 0.007314582 2 (no aging) 0.984959659 n/a 2 (no opt) 1.057880728 0.017989741 2 (opt) 1.037735641 0.013996319 4 (no aging) 1.264881581 n/a 4 (no opt) 1.318849182 0.056164918 4 (opt) 1.314653465 0.029311993 8 (no aging) 1.473883699 n/a 8 (no opt) 1.589441079 0.227419586s 8 (opt) 1.498439592 0.063857740s 16 (no aging) 2.048766096 n/a 16 (no opt) 2.399335597 1.247142841s 16 (opt) 2.000914001 0.121628689s 32 (no aging) 3.316256321 n/a 32 (no opt) 3.955417018 4.347290433 32 (opt) 3.355274507 0.250886289 64 (no aging) 6.498958516 n/a 64 (no opt) 7.127533884 9.815592054 64 (opt) 6.442582168 1.392907010 112 (no aging) 8.498029491 n/a 112 (no opt) 10.21372495 13.47381656 112 (opt) 8.896963554 2.292223850 Previous versions of this series included logic in MGLRU and KVM to support batching the updates to secondary page tables. This version removes this logic, as it was complex and not necessary to enable proactive reclaim. This optimization, as well as the additional optimizations for arm64 and powerpc, can be done in a later series. Changes since v3[1]: - Vastly simplified the series (thanks David). Removed mmu notifier batching logic entirely. - Cleaned up how locking is done for mmu_notifier_test/clear_young (thanks David). - Look-around is now only done when there are no secondary MMUs subscribed to MMU notifiers. - CONFIG_LRU_GEN_WALKS_SECONDARY_MMU has been added. - Fixed the lockless implementation of kvm_{test,}age_gfn for x86 (thanks David). - Added MGLRU functional and performance tests to access_tracking_perf_test (thanks Axel). - In v3, an mm would be completely ignored (for aging) if there was a secondary MMU but support for secondary MMU walking was missing. Now, missing secondary MMU walking support simply skips the notifier calls (except for eviction). - Added a sanity check for that range->lockless and range->on_lock are never both provided for the memslot walk. For the changes from v2[2] to v3, see v3[1]. This series applies cleanly to mm/mm-unstable and kvm/queue. [1]: https://lore.kernel.org/linux-mm/20240401232946.1837665-1-jthoughton@google… [2]: https://lore.kernel.org/kvmarm/20230526234435.662652-1-yuzhao@google.com/ James Houghton (7): mm/Kconfig: Add LRU_GEN_WALKS_SECONDARY_MMU mm: multi-gen LRU: Have secondary MMUs participate in aging KVM: Add lockless memslot walk to KVM KVM: Move MMU lock acquisition for test/clear_young to architecture KVM: x86: Relax locking for kvm_test_age_gfn and kvm_age_gfn KVM: arm64: Relax locking for kvm_test_age_gfn and kvm_age_gfn KVM: selftests: Add multi-gen LRU aging to access_tracking_perf_test Documentation/admin-guide/mm/multigen_lru.rst | 6 +- arch/arm64/kvm/hyp/pgtable.c | 9 +- arch/arm64/kvm/mmu.c | 30 +- arch/loongarch/kvm/mmu.c | 20 +- arch/mips/kvm/mmu.c | 21 +- arch/powerpc/kvm/book3s.c | 14 +- arch/riscv/kvm/mmu.c | 26 +- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/mmu/mmu.c | 10 +- arch/x86/kvm/mmu/tdp_iter.h | 27 +- arch/x86/kvm/mmu/tdp_mmu.c | 67 ++- include/linux/kvm_host.h | 1 + include/linux/mmzone.h | 6 +- mm/Kconfig | 8 + mm/rmap.c | 9 +- mm/vmscan.c | 144 +++++-- tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/access_tracking_perf_test.c | 365 ++++++++++++++-- .../selftests/kvm/include/lru_gen_util.h | 55 +++ .../testing/selftests/kvm/lib/lru_gen_util.c | 391 ++++++++++++++++++ virt/kvm/kvm_main.c | 38 +- 21 files changed, 1104 insertions(+), 145 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/lru_gen_util.h create mode 100644 tools/testing/selftests/kvm/lib/lru_gen_util.c base-commit: e0cce98fe279b64f4a7d81b7f5c3a23d80b92fbc -- 2.45.1.288.g0e0cd299f1-goog

9 months, 2 weeks

5
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[PATCH][next][V2] selftests: kvm: fix shift of 32 bit unsigned int more than 32 bits

by Colin Ian King

Currrentl a 32 bit 1u value is being shifted more than 32 bits causing overflow and incorrect checking of bits 32-63. Fix this by using the BIT_ULL macro for shifting bits. Detected by cppcheck: sev_init2_tests.c:108:34: error: Shifting 32-bit value by 63 bits is undefined behaviour [shiftTooManyBits] Fixes: dfc083a181ba ("selftests: kvm: add tests for KVM_SEV_INIT2") Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- V2: Fix incorrect variable in 2nd BIT_ULL(), kudos to Dan Carpenter for catching this error. --- tools/testing/selftests/kvm/x86_64/sev_init2_tests.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/sev_init2_tests.c b/tools/testing/selftests/kvm/x86_64/sev_init2_tests.c index 7a4a61be119b..ea09f7a06aa4 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_init2_tests.c +++ b/tools/testing/selftests/kvm/x86_64/sev_init2_tests.c @@ -105,11 +105,11 @@ void test_features(uint32_t vm_type, uint64_t supported_features) int i; for (i = 0; i < 64; i++) { - if (!(supported_features & (1u << i))) + if (!(supported_features & BIT_ULL(i))) test_init2_invalid(vm_type, &(struct kvm_sev_init){ .vmsa_features = BIT_ULL(i) }, "unknown feature"); - else if (KNOWN_FEATURES & (1u << i)) + else if (KNOWN_FEATURES & BIT_ULL(i)) test_init2(vm_type, &(struct kvm_sev_init){ .vmsa_features = BIT_ULL(i) }); } -- 2.39.2

9 months, 2 weeks

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[PATCH v7 00/10] Fix Kselftest's vfork() side effects

by Mickaël Salaün

Hi, This seven series fix an issue reported by kernel test robot [3]. Shuah, I (as well as Kees and Sean [4]) think this should be in -next really soon to make sure everything works fine for the v6.9 release, which is not currently the case. I cannot test against all kselftests though. I would prefer to let you handle this, but I guess you're not able to do so and I'll push it on my branch without reply from you. Even if I push it on my branch, please push it on yours too as soon as you see this and I'll remove it from mine. Mark, Jakub, could you please test this series? As reported by Kernel Test Robot [1] and Sean Christopherson [2], some tests fail since v6.9-rc1 . This is due to the use of vfork() which introduced some side effects. Similarly, while making it more generic, a previous commit made some Landlock file system tests flaky, and subject to the host's file system mount configuration. This series fixes all these side effects by replacing vfork() with clone3() and CLONE_VFORK, which is cleaner (no arbitrary shared memory) and makes the Kselftest framework more robust. I tried different approaches and I found this one to be the cleaner and less invasive for current test cases. I successfully ran the following tests (using TEST_F and fork/clone/clone3, and KVM_ONE_VCPU_TEST) with this series: - kvm:fix_hypercall_test - kvm:sync_regs_test - kvm:userspace_msr_exit_test - kvm:vmx_pmu_caps_test - landlock:fs_test - landlock:net_test - landlock:ptrace_test - move_mount_set_group:move_mount_set_group_test - net/af_unix:scm_pidfd - perf_events:remove_on_exec - pidfd:pidfd_getfd_test - pidfd:pidfd_setns_test - seccomp:seccomp_bpf - user_events:abi_test [1] https://lore.kernel.org/oe-lkp/202403291015.1fcfa957-oliver.sang@intel.com [2] https://lore.kernel.org/r/ZjPelW6-AbtYvslu@google.com [3] https://lore.kernel.org/r/202405100339.vfBe0t9C-lkp@intel.com [4] https://lore.kernel.org/r/202405061002.01D399877A@keescook Previous versions: v1: https://lore.kernel.org/r/20240426172252.1862930-1-mic@digikod.net v2: https://lore.kernel.org/r/20240429130931.2394118-1-mic@digikod.net v3: https://lore.kernel.org/r/20240429191911.2552580-1-mic@digikod.net v4: https://lore.kernel.org/r/20240502210926.145539-1-mic@digikod.net v5: https://lore.kernel.org/r/20240503105820.300927-1-mic@digikod.net v6: https://lore.kernel.org/r/20240506165518.474504-1-mic@digikod.net Regards, Mickaël Salaün (10): selftests/pidfd: Fix config for pidfd_setns_test selftests/landlock: Fix FS tests when run on a private mount point selftests/harness: Fix fixture teardown selftests/harness: Fix interleaved scheduling leading to race conditions selftests/landlock: Do not allocate memory in fixture data selftests/harness: Constify fixture variants selftests/pidfd: Fix wrong expectation selftests/harness: Share _metadata between forked processes selftests/harness: Fix vfork() side effects selftests/harness: Handle TEST_F()'s explicit exit codes tools/testing/selftests/kselftest_harness.h | 127 +++++++++++++----- tools/testing/selftests/landlock/fs_test.c | 83 +++++++----- tools/testing/selftests/pidfd/config | 2 + .../selftests/pidfd/pidfd_setns_test.c | 2 +- 4 files changed, 147 insertions(+), 67 deletions(-) base-commit: e67572cd2204894179d89bd7b984072f19313b03 -- 2.45.0

9 months, 2 weeks

2
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[PATCH] selftests: drivers/s390x: Use SKIP() during FIXTURE_SETUP

by Kees Cook

Instead of mixing selftest harness and ksft helpers, perform SKIP testing from the FIXTURE_SETUPs. This also means TEST_HARNESS_MAIN does not need to be open-coded. Signed-off-by: Kees Cook <keescook(a)chromium.org> --- Cc: Christian Borntraeger <borntraeger(a)linux.ibm.com> Cc: Janosch Frank <frankja(a)linux.ibm.com> Cc: Claudio Imbrenda <imbrenda(a)linux.ibm.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Masahiro Yamada <masahiroy(a)kernel.org> Cc: kvm(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org --- I wasn't able to build or run test this, since it's very s390 specific, it seems? --- .../drivers/s390x/uvdevice/test_uvdevice.c | 32 ++++++++----------- 1 file changed, 13 insertions(+), 19 deletions(-) diff --git a/tools/testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c b/tools/testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c index ea0cdc37b44f..9622fac42597 100644 --- a/tools/testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c +++ b/tools/testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c @@ -18,6 +18,16 @@ #define UV_PATH "/dev/uv" #define BUFFER_SIZE 0x200 + +#define open_uv() \ +do { \ + self->uv_fd = open(UV_PATH, O_ACCMODE); \ + if (self->uv_fd < 0) \ + SKIP(return, "No uv-device or cannot access " UV_PATH "\n" \ + "Enable CONFIG_S390_UV_UAPI and check the access rights on " \ + UV_PATH ".\n"); \ +} while (0) + FIXTURE(uvio_fixture) { int uv_fd; struct uvio_ioctl_cb uvio_ioctl; @@ -37,7 +47,7 @@ FIXTURE_VARIANT_ADD(uvio_fixture, att) { FIXTURE_SETUP(uvio_fixture) { - self->uv_fd = open(UV_PATH, O_ACCMODE); + open_uv(); self->uvio_ioctl.argument_addr = (__u64)self->buffer; self->uvio_ioctl.argument_len = variant->arg_size; @@ -159,7 +169,7 @@ FIXTURE(attest_fixture) { FIXTURE_SETUP(attest_fixture) { - self->uv_fd = open(UV_PATH, O_ACCMODE); + open_uv(); self->uvio_ioctl.argument_addr = (__u64)&self->uvio_attest; self->uvio_ioctl.argument_len = sizeof(self->uvio_attest); @@ -257,20 +267,4 @@ TEST_F(attest_fixture, att_inval_addr) att_inval_addr_test(&self->uvio_attest.meas_addr, _metadata, self); } -static void __attribute__((constructor)) __constructor_order_last(void) -{ - if (!__constructor_order) - __constructor_order = _CONSTRUCTOR_ORDER_BACKWARD; -} - -int main(int argc, char **argv) -{ - int fd = open(UV_PATH, O_ACCMODE); - - if (fd < 0) - ksft_exit_skip("No uv-device or cannot access " UV_PATH "\n" - "Enable CONFIG_S390_UV_UAPI and check the access rights on " - UV_PATH ".\n"); - close(fd); - return test_harness_run(argc, argv); -} +TEST_HARNESS_MAIN -- 2.34.1

9 months, 2 weeks

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Linux-kselftest-mirror May 2024