Hi Jörg, Magnus, On R-Car Gen3 systems with PSCI, PSCI may power down the SoC during system suspend, thus losing all IOMMU state. Hence after s2ram, devices behind an IPMMU (e.g. SATA), and configured to use it, will fail to complete their I/O operations. This patch series adds suspend/resume support to the Renesas IPMMU-VMSA IOMMU driver, and performs some smaller cleanups and fixes during the process. Most patches are fairly independent, except for patch 6/6, which depends on patches 4/6 and 5/6. Changes compared to v2: - Fix sysfs path typo in patch description, - Add Reviewed-by. Changes compared to v1: - Dropped "iommu/ipmmu-vmsa: Call ipmmu_ctx_write_root() instead of open coding", - Add Reviewed-by, - Merge IMEAR/IMELAR, - s/ipmmu_context_init/ipmmu_domain_setup_context/, - Drop PSCI checks. This has been tested on Salvator-XS with R-Car H3 ES2.0, with IPMMU suport for SATA enabled. To play safe, the resume operation has also been tested on R-Car M2-W. Thanks! Geert Uytterhoeven (6): iommu/ipmmu-vmsa: Link IOMMUs and devices in sysfs iommu/ipmmu-vmsa: Prepare to handle 40-bit error addresses iommu/ipmmu-vmsa: Make IPMMU_CTX_MAX unsigned iommu/ipmmu-vmsa: Move num_utlbs to SoC-specific features iommu/ipmmu-vmsa: Extract hardware context initialization iommu/ipmmu-vmsa: Add suspend/resume support drivers/iommu/ipmmu-vmsa.c | 185 +++++++++++++++++++++++++------------ 1 file changed, 124 insertions(+), 61 deletions(-) -- 2.17.1 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds