tree c2f7957d515c0f8476fbaef06b9948bf15c20841
parent 1b421b1005ccadf8678cf8b102c105c9eb86cffe
author David Horstmann <david.horstmann@arm.com> 1705505270 +0000
committer David Horstmann <david.horstmann@arm.com> 1705505874 +0000

Add underflow check to UNPOISON counter decrement

Make sure that extra UNPOISON calls do not cause the poisoning counter
to underflow and wrap around.

Memory that is unpoisoned multiple times should remain unpoisoned.

Signed-off-by: David Horstmann <david.horstmann@arm.com>