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PC alignment faults have priority over instruction aborts and we have code to deal with this in the translation front-ends. However during tb_lookup we can see a potentially faulting probe which doesn't get a MemOp set. If the page isn't available this results in EC_INSNABORT (0x20) instead of EC_PCALIGNMENT (0x22). As there is no easy way to set the appropriate MemOp in the instruction fetch probe path lets just detect it in arm_cpu_tlb_fill_align() ahead of the main alignment check. We also teach arm_deliver_fault to deliver the right syndrome for MMU_INST_FETCH alignment issues. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3233 Tested-by: Jessica Clarke <jrtc27@jrtc27.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20251209092459.1058313-5-alex.bennee@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>