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Date: Fri, 8 Feb 2019 17:02:33 -0800 From: sathyanarayanan kuppuswamy <sathyanarayanan.kuppuswamy@...ux.intel.com> To: Sinan Kaya <okaya@...nel.org>, bhelgaas@...gle.com, joro@...tes.org, dwmw2@...radead.org Cc: linux-pci@...r.kernel.org, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Ashok Raj <ashok.raj@...el.com>, Jacob Pan <jacob.jun.pan@...ux.intel.com>, Keith Busch <keith.busch@...el.com> Subject: Re: [PATCH v1 1/2] PCI: ATS: Add function to check ATS page aligned request status. On 2/7/19 5:58 PM, Sinan Kaya wrote: > > On 2/7/2019 5:16 PM, sathyanarayanan kuppuswamy wrote: >>> If I remember this right, aligned request is only supported on ATS v1.1 >>> but not supported on v1.0. >> Its added in v1.1. > > This means that you should probably have some kind of version check > here. There is no version field in ATS v1.0 spec. Also, If I follow the history log in PCI spec, I think ATS if first added at v1.2. Please correct me if I am wrong. -- Sathyanarayanan Kuppuswamy Linux kernel developer
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