In every arm platform which is making use of them, mem_regions are interpreted as a pair of start address and size. However arm SimpleSystem, which is using VExpress_GEM5_V1, is interpreting them as start address and end address. This patch is fixing this mismatch. Change-Id: I0b2a2193cd07fbc5430f233438269a9c7c353df9 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Ciro Santilli <ciro.santilli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/16205 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>