KVM: selftests: Add option to set empty routing between IRQs in eventfd IRQ test

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Extend the eventfd IRQ test with an '-e' flag to set empty GSI routing
between interrupts.  Clobbering the GSI routing table verifies that KVM
correctly handles CPUx => NULL => CPUy transitions, not just CPUx => CPUy
transitions, and verifies that KVM can "rebuild" an entire routing setup.

Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: '-e' for "empty" instead of '-c' for "clear", massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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David Matlack 2026-06-26 14:35:25 -07:00 • committed by Sean Christopherson

parent 197b0cd9ac

commit ec333e3ace

1 changed files with 18 additions and 2 deletions

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tools/testing/selftests/kvm/irq_test.c

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