KVM: arm64: Move OUTSIDE_GUEST_MODE publication past context being saved

OUTSIDE_GUEST_MODE indicates to the rest of KVM that the vcpu has
exited. So far, this is set as soon as we return from the notional
hypervisor (which with VHE is just a function call away).

However, code that uses OUTSIDE_GUEST_MODE as a synchronisation point
relies on the vcpu state to have been written back to the in-memory
structures. Clearly, this is not what is happening.

Move the publication of OUTSIDE_GUEST_MODE to the point where the state
is actually written, and give this write release semantics to ensure the
correct ordering.

Cc: stable@vger.kernel.org
Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Tested-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20261015100539.1011760-3-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions