KVM: arm64: selftests: Avoid testing the IMPDEF behavior

Browse source

It turned out that we can't really force KVM to use the "slow" path when
emulating AT instructions [1]. We should therefore avoid testing the IMPDEF
behavior (i.e., TEST_ACCESS_FLAG - address translation instructions are
permitted to update AF but not required).

Remove it and improve the comment a bit.

[1] https://lore.kernel.org/r/b951dcfb-0ad1-4d7b-b6ce-d54b272dd9be@linux.dev

Signed-off-by: Zenghui Yu (Huawei) <zenghui.yu@linux.dev>
Link: https://patch.msgid.link/20260317131558.52751-1-zenghui.yu@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

...

This commit is contained in:

Zenghui Yu (Huawei) 2026-03-17 21:15:58 +08:00 • committed by Marc Zyngier

parent a3ca3bfd01

commit 03db5f05d4

1 changed files with 2 additions and 12 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

14

tools/testing/selftests/kvm/arm64/at.c

View file