Re: [Xen-devel] [PATCH v14 8/9] mm / iommu: include need_iommu() test in iommu_use_hap_pt()

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> Sent: 05 October 2018 17:04
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx; Stefano Stabellini
> <sstabellini@xxxxxxxxxx>; Jun Nakajima <jun.nakajima@xxxxxxxxx>; George
> Dunlap <George.Dunlap@xxxxxxxxxx>; Andrew Cooper
> <Andrew.Cooper3@xxxxxxxxxx>; Jan Beulich <jbeulich@xxxxxxxx>; Wei Liu
> <wei.liu2@xxxxxxxxxx>
> Subject: Re: [Xen-devel] [PATCH v14 8/9] mm / iommu: include need_iommu()
> test in iommu_use_hap_pt()
> 
> This patch has broken my PVH Dom0 setup.

Hmm. This is probably a bug in the need_iommu() setting for dom0. Do you still 
see the problem with the subsequent patch " mm / iommu: split need_iommu() into 
has_iommu_pt()..." applied too?

  Paul 

> 
> [    2.515159] igb 0000:02:00.1: added PHC on eth1
> [    2.519539] igb 0000:02:00.1: Intel(R) Gigabit Ethernet Network
> Connection
> [    2.526469] igb 0000:02:00.1: eth1: (PCIe:5.0Gb/s:Width x4)
> 0c:c4:7a:e7:b6:53
> [    2.533733] igb 0000:02:00.1: eth1: PBA No: 010A00-000
> [    2.538860] igb 0000:02:00.1: Using MSI-X interrupts. 8 rx queue(s), 8
> tx queue(s)
> [    2.649191] ata8: SATA link down (SStatus 0 SControl 300)
> [    2.654467] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [    2.660730] ata7: SATA link down (SStatus 0 SControl 300)
> [    2.666166] ata5: SATA link down (SStatus 0 SControl 300)
> [    2.671619] ata3: SATA link down (SStatus 0 SControl 300)
> [    2.677073] ata6: SATA link down (SStatus 0 SControl 300)
> [    2.682538] ata2: SATA link down (SStatus 0 SControl 300)
> [    2.687988] ata4: SATA link down (SStatus 0 SControl 300)
> [    2.694632] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x100)
> [    8.215728] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [    8.222945] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x100)
> [    8.229052] ata1: limiting SATA link speed to 1.5 Gbps
> [   13.590991] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
> [   13.597142] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x100)
> 
> Wei.

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