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

Add and use KVM wrappers for pthread_{cancel,join}() so that selftests
don't need to manually assert that the syscalls succeeded.

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

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 <seanjc@google.com>

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

Add and use a KVM wrapper for pthread_create() syscall so that selftests
don't need to manually assert that the syscall succeeded.

Note,

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

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 <seanjc@google.com>

show more ...