diff options
| author | James Morse <james.morse@arm.com> | 2020-05-29 15:06:56 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-06-09 09:07:58 +0100 |
| commit | e8679fedd026eb3b4655af83829d9036e32c9b97 (patch) | |
| tree | 23e284ad77500de7a398a9d1a5fb8c2d59b6cc34 /arch/sparc/lib/NGcopy_to_user.S | |
| parent | ef5a294be8d0e17b91d23be905f69368b0d3952e (diff) | |
KVM: arm64: Stop save/restoring ACTLR_EL1
KVM sets HCR_EL2.TACR via HCR_GUEST_FLAGS. This means ACTLR* accesses
from the guest are always trapped, and always return the value in the
sys_regs array.
The guest can't change the value of these registers, so we are
save restoring the reset value, which came from the host.
Stop save/restoring this register. Keep the storage for this register
in sys_regs[] as this is how the value is exposed to user-space,
removing it would break migration.
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200529150656.7339-4-james.morse@arm.com
Diffstat (limited to 'arch/sparc/lib/NGcopy_to_user.S')
0 files changed, 0 insertions, 0 deletions