Hi Alex, Christian,
I recently tested v4.3-rc4 on one of my AMD IOMMU boxes with a radeon
GPU in it:
mars:~ # lspci -k -s 08:00.0
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Juniper XT [Radeon HD 5770]
Subsystem: PC Partner Limited / Sapphire Technology Device 1482
Kernel driver in use: radeon
Kernel modules: radeon
When the box is suspended-to-disk, I get a lot of IO_PAGE_FAULTs from
the IOMMU on dma-addresses that either the IOMMU driver would never
return (<4k and >4G) or that were not returned by the driver (I did some
tracing to verify that). This does _not_ happen on suspend-to-mem.
Any ideas what might causing this? Let me know if you need more
information.
Joerg
