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linux/arch/powerpc
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Shivaprasad G Bhat d2d00e1580 powerpc: iommu: Bring back table group release_ownership() call 
The commit 2ad56efa80 ("powerpc/iommu: Setup a default domain and
remove set_platform_dma_ops") refactored the code removing the
set_platform_dma_ops(). It missed out the table group
release_ownership() call which would have got called otherwise
during the guest shutdown via vfio_group_detach_container(). On
PPC64, this particular call actually sets up the 32-bit TCE table,
and enables the 64-bit DMA bypass etc. Now after guest shutdown,
the subsequent host driver (e.g megaraid-sas) probe post unbind
from vfio-pci fails like,

megaraid_sas 0031:01:00.0: Warning: IOMMU dma not supported: mask 0x7fffffffffffffff, table unavailable
megaraid_sas 0031:01:00.0: Warning: IOMMU dma not supported: mask 0xffffffff, table unavailable
megaraid_sas 0031:01:00.0: Failed to set DMA mask
megaraid_sas 0031:01:00.0: Failed from megasas_init_fw 6539

The patch brings back the call to table_group release_ownership()
call when switching back to PLATFORM domain from BLOCKED, while
also separates the domain_ops for both.

Fixes: 2ad56efa80 ("powerpc/iommu: Setup a default domain and remove set_platform_dma_ops")
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/170628173462.3742.18330000394415935845.stgit@ltcd48-lp2.aus.stglab.ibm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-02-02 09:26:20 +01:00
..
boot powerpc/fsl: Fix fsl,tmu-calibration to match the schema 2023-12-19 21:53:56 +11:00
configs Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
crypto crypto: p10-aes-gcm - Avoid -Wstringop-overflow warnings 2023-12-01 18:03:26 +08:00
include TTY/Serial changes for 6.8-rc1 2024-01-18 11:37:24 -08:00
kernel powerpc: iommu: Bring back table group release_ownership() call 2024-02-02 09:26:20 +01:00
kexec Quite a lot of kexec work this time around. Many singleton patches in 2024-01-09 11:46:20 -08:00
kvm Generic: 2024-01-17 13:03:37 -08:00
lib powerpc/lib: Validate size for vector operations 2023-11-27 22:06:19 +11:00
math-emu
mm Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
net powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free] 2023-10-23 20:33:19 +11:00
perf Performance events changes for v6.8 are: 2024-01-08 19:37:20 -08:00
platforms TTY/Serial changes for 6.8-rc1 2024-01-18 11:37:24 -08:00
purgatory
sysdev pci-v6.8-changes 2024-01-17 16:23:17 -08:00
tools powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh 2023-10-20 17:46:33 +11:00
xmon TTY/Serial driver changes for 6.6-rc1 2023-09-01 09:38:00 -07:00
Kbuild
Kconfig powerpc fixes for 6.8 #2 2024-01-21 11:04:29 -08:00
Kconfig.debug powerpc/ps3: move udbg_shutdown_ps3gelic prototype 2023-11-21 12:06:50 +11:00
Makefile powerpc/Makefile: Auto detect cross compiler 2023-12-07 23:34:38 +11:00
Makefile.postlink kbuild: remove ARCH_POSTLINK from module builds 2023-10-28 21:10:08 +09:00