linux-kernel - Re: [PATCH V2] PCI: enable extended tags support for PCIe devices

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Message-ID: <1214d229-0f0c-d9fd-3d25-39a6e257a36b@codeaurora.org>
Date:   Fri, 20 Jan 2017 09:36:45 -0500
From:   Sinan Kaya <okaya@...eaurora.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] PCI: enable extended tags support for PCIe devices

On 1/20/2017 9:16 AM, Sinan Kaya wrote:
> Each PCIe device can issue up to 32 transactions at a time by default.
> This limitation is historically coming from PCI. Each transaction is
> tracked by a tag number on the bus. 2.2.6.2. Transaction Descriptor
> – Transaction ID Field section of the PCIe 3.1 specification describes
> extended tags.
> 

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