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Subject"iommu/vt-d: Delegate DMA domain to generic iommu" series breaks megaraid_sas
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The linux-next series "iommu/vt-d: Delegate DMA domain to generic iommu" [1]
causes a system with the rootfs on megaraid_sas card unable to boot.

Reverted the whole series on the top of linux-next (next-20190607) fixed the
issue.

The information regards this storage card is,

[  116.466810][  T324] megaraid_sas 0000:06:00.0: FW provided supportMaxExtLDs:
0 max_lds: 32
[  116.476052][  T324] megaraid_sas 0000:06:00.0: controller type :
iMR(0MB)
[  116.483646][  T324] megaraid_sas 0000:06:00.0: Online Controller Reset(OCR)
: Enabled
[  116.492403][  T324] megaraid_sas 0000:06:00.0: Secure JBOD support :
Yes
[  116.499887][  T324] megaraid_sas 0000:06:00.0: NVMe passthru support :
No
[  116.507480][  T324] megaraid_sas 0000:06:00.0: FW provided
[  116.612523][  T324] megaraid_sas 0000:06:00.0: NVME page size : (0)
[  116.629991][  T324] megaraid_sas 0000:06:00.0: INIT adapter done
[  116.714789][  T324] megaraid_sas 0000:06:00.0: pci id :
(0x1000)/(0x0017)/(0x1d49)/(0x0500)
[  116.724228][  T324] megaraid_sas 0000:06:00.0: unevenspan support : no
[  116.731518][  T324] megaraid_sas 0000:06:00.0: firmware crash dump :
no
[  116.738981][  T324] megaraid_sas 0000:06:00.0: jbod sync map :
yes
[  116.787433][  T324] scsi host0: Avago SAS based MegaRAID driver
[  117.081088][  T324] scsi 0:0:0:0: Direct-
Access     LENOVO   ST900MM0168      L587 PQ: 0 ANSI: 6

[1] https://lore.kernel.org/patchwork/cover/1078960/

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