KVM: arm64: selftests: Add a userspace watchpoint test

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debug-exceptions covers guest self-hosted debug and userspace
single-step, but not a userspace (KVM_GUESTDBG_USE_HW) watchpoint,
whose KVM_EXIT_DEBUG reports the accessed address in debug.arch.far.
Add a test that installs a host-directed write watchpoint and checks
that the reported address matches the accessed variable.

Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260726143643.303456-3-fuad.tabba@linux.dev
Signed-off-by: Oliver Upton <oupton@kernel.org>

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Fuad Tabba 2026-07-26 15:36:43 +01:00 • committed by Oliver Upton

parent 119a9a23fb

commit 3be99f8751

1 changed files with 41 additions and 0 deletions

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tools/testing/selftests/kvm/arm64/debug-exceptions.c

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