diff options
| author |   Alexandru Elisei <alexandru.elisei@arm.com> | 2025-11-28 10:09:46 +0000 |
|---|---|---|
| committer |   Oliver Upton <oupton@kernel.org> | 2025-12-01 00:44:55 -0800 |
| commit | d52aca1635654805a682afef176473793a63b588 (patch) | |
| tree | 5e6d0626bfe33ec310343e8146ed8c7c519d10bb /tools/lib/python/kdoc/python_version.py | |
| parent | KVM: arm64: at: Use correct HA bit in TCR_EL2 when regime is EL2 (diff) | |
KVM: arm64: at: Update AF on software walk only if VM has FEAT_HAFDBS
A guest can write 1 to TCR_ELx.HA, making the KVM software walker update
the access flag in a table descriptor even if FEAT_HAFDBS is not present.
Avoid this by making wi->ha depend on FEAT_HAFDBS being enabled in the VM,
similar to how the software walker treats FEAT_HPDS.
This is not needed for VTCR_EL2.HA, since a guest will always write to
the in-memory copy of the register, where the HA bit is masked (set to
0) by KVM if the VM doesn't have FEAT_HAFDBS.
Fixes: c59ca4b5b0c3 ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://msgid.link/20251128100946.74210-5-alexandru.elisei@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
Diffstat (limited to 'tools/lib/python/kdoc/python_version.py')
0 files changed, 0 insertions, 0 deletions