wireguard-linux/tools/testing/selftests/kvm/s390, branch stable

KVM: selftests: Add KVM syscall wrappers for pthread_{cancel,join}()

2026-07-31T20:54:47Z

Add and use KVM wrappers for pthread_{cancel,join}() so that selftests don't need to manually assert that the syscalls succeeded. Note, the vast majority tests don't actually assert success, but they all obviously rely on the syscall to succeed. Other than explicitly failing if a syscall fails, no functional change intended. Link: https://patch.msgid.link/20260731195612.2697986-10-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Add KVM syscall wrapper for pthread_create()

2026-07-31T20:54:47Z

Add and use a KVM wrapper for pthread_create() syscall so that selftests don't need to manually assert that the syscall succeeded. Note, most tests don't actually assert success, but they all obviously rely on the syscall to succeed. Other than explicitly failing if pthread_create() fails, no functional change intended. Link: https://patch.msgid.link/20260731195612.2697986-9-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: s390: selftests: Fix cmma selftest

2026-06-24T08:08:57Z

The existing cmma selftest depended on the host allocating page tables for all present memslots. Since the gmap rewrite, memory that is not accessed by the guest might not have page tables allocated yet. This caused the test to fail due to a mismatch in the assertion. Fix by having the guest access also the second half of the test memslot, thus guaranteeing that its page tables are present. Fixes: e38c884df921 ("KVM: s390: Switch to new gmap") Signed-off-by: Claudio Imbrenda Message-ID: <20260623153331.233784-9-imbrenda@linux.ibm.com>

KVM: s390: selftests: Extended user_operexec tests

2026-06-24T08:01:56Z

There is a possibility that the user_operexec capability only works if facility bit 74 is enabled. This is now fixed, but add a selftest to demonstrate that. Signed-off-by: Eric Farman Acked-by: Janosch Frank Reviewed-by: Claudio Imbrenda Signed-off-by: Claudio Imbrenda Message-ID: <20260507200836.3500368-3-farman@linux.ibm.com>

KVM: selftests: Include sys/mman.h and linux/mman.h, via kvm_syscalls.h

2026-05-13T16:53:43Z

Include both linux/mman.h (the kernel provided version) and sys/mman.h (the libc provided version) throughout KVM selftests, by way of kvm_syscalls.h (which should have been including sys/mman.h anyways). Pulling in the kernel's version fixes compilation errors with the guest_memfd test on older versions of libc due to a recent commit adding MADV_COLLAPSE testing. In file included from include/kvm_util.h:8, from guest_memfd_test.c:21: guest_memfd_test.c: In function ‘test_collapse’: guest_memfd_test.c:219:47: error: ‘MADV_COLLAPSE’ undeclared (first use in this function); did you mean ‘MADV_COLD’? 219 | TEST_ASSERT_EQ(madvise(mem, pmd_size, MADV_COLLAPSE), -1); | ^~~~~~~~~~~~~ include/test_util.h:62:16: note: in definition of macro ‘TEST_ASSERT_EQ’ 62 | typeof(a) __a = (a); \ | ^ guest_memfd_test.c:219:47: note: each undeclared identifier is reported only once for each function it appears in 219 | TEST_ASSERT_EQ(madvise(mem, pmd_size, MADV_COLLAPSE), -1); | ^~~~~~~~~~~~~ include/test_util.h:62:16: note: in definition of macro ‘TEST_ASSERT_EQ’ 62 | typeof(a) __a = (a); \ | ^ Route the includes through kvm_syscalls.h to try and avoid a future game of whack-a-mole, i.e. so that future expansion of test coverage doesn't run into the same problem. To discourage use of sys/mman.h, opportunistically include the kernel's version of mman.h in test_util.h as it only needs MAP_SHARED, i.e. only needs the full set of kernel defs, not the libc syscall wrappers. Fixes: 9830209b4ae8 ("KVM: selftests: Test MADV_COLLAPSE on guest_memfd") Reported-by: Rick Edgecombe Closes: https://lore.kernel.org/all/20260427204313.50741-1-rick.p.edgecombe@intel.com Link: https://patch.msgid.link/20260428012503.1213654-1-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout

2026-04-20T21:54:17Z

Use gpa_t instead of u64 for obvious declarations of GPA variables. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-18-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Replace "vaddr" with "gva" throughout

2026-04-20T21:54:17Z

Replace all variations of "vaddr" variables in KVM selftests with "gva", with the exception of the ELF structures, as those fields are not specific to guest virtual addresses, to complete the conversion from vm_vaddr_t to gva_t. Opportunistically use gva_t instead of u64 for relevant variables, and fixup indentation as appropriate. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-17-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM

2026-04-20T21:54:17Z

Now that KVM selftests use gva_t instead of vm_vaddr_t, drop "vaddr_" from the core memory allocation APIs as the information is extraneous and does more harm than good. E.g. the APIs don't _just_ allocate virtual memory, they allocate backing physical memory and install mappings in the guest page tables. And as proven by kmalloc() and malloc(), developers generally expect that allocations come with a working virtual address. Opportunistically clean up the function comment for vm_alloc(), and drop the misleading and superfluous comments for its wrappers. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-12-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u8 instead of uint8_t

2026-04-20T21:54:17Z

Use u8 instead of uint8_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint8_t/u8/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack Link: https://patch.msgid.link/20260420212004.3938325-11-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u16 instead of uint16_t

2026-04-20T21:54:17Z

Use u16 instead of uint16_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint16_t/u16/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack Link: https://patch.msgid.link/20260420212004.3938325-9-seanjc@google.com Signed-off-by: Sean Christopherson

wireguard-linux/tools/testing/selftests/kvm/s390, branch stable

KVM: selftests: Add KVM syscall wrappers for pthread_{cancel,join}()

KVM: selftests: Add KVM syscall wrapper for pthread_create()

KVM: s390: selftests: Fix cmma selftest

KVM: s390: selftests: Extended user_operexec tests

KVM: selftests: Include sys/mman.h *and* linux/mman.h, via kvm_syscalls.h

KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout

KVM: selftests: Replace "vaddr" with "gva" throughout

KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM

KVM: selftests: Use u8 instead of uint8_t

KVM: selftests: Use u16 instead of uint16_t

KVM: selftests: Include sys/mman.h and linux/mman.h, via kvm_syscalls.h