Messages in this thread | | | Date | Mon, 24 Mar 2014 16:48:06 +0100 | From | Joerg Roedel <> | Subject | Re: [PATCH V2] iommu/amd: Fix logic to determine and checking max PASID |
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On Wed, Mar 05, 2014 at 06:54:18PM -0600, suravee.suthikulpanit@amd.com wrote: > From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> > > 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@amd.com> > Tested-by: Jay Cornwall <Jay.Cornwall@amd.com>
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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