Re: [PATCH V2] iommu/amd: Fix logic to determine and checking max PASID

[Joerg Roedel]

On Wed, Mar 05, 2014 at 06:54:18PM -0600, suravee.suthikulpanit@xxxxxxx wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> 
> In reality, the spec can only support 16-bit PASID since
> INVALIDATE_IOTLB_PAGES and COMPLETE_PPR_REQUEST commands only allow 16-bit
> PASID. So, we updated the PASID_MASK accordingly and invoke BUG_ON
> if the hardware is reporting PASmax more than 16-bit.
> 
> Besides, max PASID is defined as ((2^(PASmax+1)) - 1). The current does not
> determine this correctly.
> 
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> Tested-by: Jay Cornwall <Jay.Cornwall@xxxxxxx>

Applied, thanks.

Btw, is there any publicly available driver/way/whatever for me to test the
AMD IOMMUv2 code paths?


	Joerg


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