KVM: arm64: vgic-its: Clear DTE when MAPD unmaps a device

vgic_its_save_device_tables will traverse its->device_list to
save DTE for each device. vgic_its_restore_device_tables will
traverse each entry of device table and check if it is valid.
Restore if valid.

But when MAPD unmaps a device, it does not invalidate the
corresponding DTE. In the scenario of continuous saves
and restores, there may be a situation where a device's DTE
is not saved but is restored. This is unreasonable and may
cause restore to fail. This patch clears the corresponding
DTE when MAPD unmaps a device.

Cc: [email protected]
Fixes: 57a9a117154c ("KVM: arm64: vgic-its: Device table save/restore")
Co-developed-by: Shusen Li <[email protected]>
Signed-off-by: Shusen Li <[email protected]>
Signed-off-by: Kunkun Jiang <[email protected]>
[Jing: Update with entry write helper]
Signed-off-by: Jing Zhang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>

0 files changed, 0 insertions, 0 deletions