KVM: selftests: Add xAPIC support in eventfd IRQ test

Browse source

Extend the eventfd IRQ test with a '-x' flag to let the user run the test
in xAPIC mode instead of the default x2APIC mode.  When using xAPIC mode,
sanity check user input to ensure the test is being run with at most 255
vCPUs, as xAPIC can only address IDs 0-254 (255, i.e. 0xff, broadcasts to
all CPUs).

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: add sanity check on number of vCPUs]
Link: https://patch.msgid.link/20260626213534.3866178-21-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

...

This commit is contained in:

David Matlack 2026-06-26 14:35:33 -07:00 • committed by Sean Christopherson

parent 0315713a19

commit 2708ecca4d

1 changed files with 26 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

31

tools/testing/selftests/kvm/irq_test.c

View file