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This is a detail that differ per chip, and not per IPA version (and there are cases of the same IPA versions being implemented across very very very different SoCs). This region isn't actually used by the driver, but we most definitely want to iommu-map it, so that IPA can poke at the data within. Reviewed-by: Alex Elder <elder@riscstar.com> Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://patch.msgid.link/20260302-topic-ipa_imem-v6-3-c0ebbf3eae9f@oss.qualcomm.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>