KVM: arm64: selftests: Add a test case for KVM_GUESTDBG_SINGLESTEP

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Add a test case for KVM_GUESTDBG_SINGLESTEP to the debug-exceptions test.
The test enables single-step execution from userspace, and check if the
exit to userspace occurs for each instruction that is stepped.
Set the default number of the test iterations to a number of iterations
sufficient to always reproduce the problem that the previous patch fixes
on an Ampere Altra machine.

Signed-off-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220917010600.532642-5-reijiw@google.com

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Reiji Watanabe 2022-09-16 18:06:00 -07:00 • committed by Marc Zyngier

parent ff00e73709

commit b18e4d4aeb

1 changed files with 131 additions and 0 deletions

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tools/testing/selftests/kvm/aarch64/debug-exceptions.c

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