Re: [PATCH] iommu: Relax ACS requirement for Intel RCiEP devices.

Hi Alex On Tue, May 26, 2020 at 05:07:15PM -0600, Alex Williamson wrote: > > --- > > drivers/iommu/iommu.c | 13 - > > 1 file changed, 12 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c > > index 2b471419e26c..31b595dfedde 100644 > >

Re: [PATCH] iommu: Relax ACS requirement for Intel RCiEP devices.

On 5/26/20 3:17 PM, Ashok Raj wrote: All Intel platforms guarantee that all root complex implementations must send transactions up to IOMMU for address translations. Hence for RCiEP devices that are Vendor ID Intel, can claim exception for lack of ACS support. 3.16 Root-Complex Peer to Peer

Re: [PATCH] iommu: Relax ACS requirement for Intel RCiEP devices.

On Tue, 26 May 2020 15:17:35 -0700 Ashok Raj wrote: > All Intel platforms guarantee that all root complex implementations > must send transactions up to IOMMU for address translations. Hence for > RCiEP devices that are Vendor ID Intel, can claim exception for lack of > ACS support. > > > 3.16

[PATCH] iommu: Relax ACS requirement for Intel RCiEP devices.

All Intel platforms guarantee that all root complex implementations must send transactions up to IOMMU for address translations. Hence for RCiEP devices that are Vendor ID Intel, can claim exception for lack of ACS support. 3.16 Root-Complex Peer to Peer Considerations When DMA remapping is