KVM: selftests: Verify interrupts are received when IRQ affinity changes in IRQ test

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Extent the eventfd IRQ test with a '-a' flag to randomly affinitize the
device's host IRQ to different physical CPUs throughout the test.  This
stresses the kernel's ability to maintain correct interrupt routing and
delivery even as the underlying hardware IRQ affinity is changed
dynamically via /proc/<irq>/smp_affinity{,_list}.

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: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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David Matlack 2026-06-26 14:35:24 -07:00 • committed by Sean Christopherson

parent 380b0e5e0e

commit 197b0cd9ac

1 changed files with 21 additions and 5 deletions

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tools/testing/selftests/kvm/irq_test.c

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