Re: [PATCH v3 2/8] iommu/amd: Add debugfs support to dump IOMMU MMIO registers

[Dheeraj Kumar Srivastava]

Hi Vasant,

On 3/13/2025 3:58 PM, Vasant Hegde wrote:
> On 2/6/2025 11:29 AM, Dheeraj Kumar Srivastava wrote:
> > Analyzing IOMMU MMIO registers gives a view of what IOMMU is
> > configured with on the system and is helpful to debug issues
> > with IOMMU.
> >
> > eg.
> > 1. To get mmio registers value for iommu<x>
> >     # echo "0x18" > /sys/kernel/debug/iommu/amd/iommu00/mmio
> >     # cat /sys/kernel/debug/iommu/amd/iommu00/mmio
>
> Many of MMIO registers are 8 bytes. By default can we print 8 bytes instead of 4
> bytes?

Sure will print 64 bits (8 bytes) for MMIO registers dump.

Thanks
Dheeraj

> -Vasant