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The GICv2 specification says that reserved register addresses must RAZ/WI; now that we implement external abort handling for Arm CPUs this means we must return MEMTX_OK rather than MEMTX_ERROR, to avoid generating a spurious guest data abort. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1513183941-24300-3-git-send-email-peter.maydell@linaro.org Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>