linux-kernel - Re: [PATCH] PCI: Decode PCIe 64 GT/s link speed

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Message-ID: <X7Y2+DvRmAxvobtR@rocinante>
Date:   Thu, 19 Nov 2020 10:12:24 +0100
From:   Krzysztof Wilczyński <kw@...ux.com>
To:     Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: Decode PCIe 64 GT/s link speed

Hi Gustavo,

> PCIe r6.0, sec 7.5.3.18, defines a new 64.0 GT/s bit in the Supported
> Link Speeds Vector of Link Capabilities 2.

64 GT/s already, nice.
 
> This does not affect the speed of the link, which should be negotiated
> automatically by the hardware; it only adds decoding when showing the
> speed to the user.
> 
> This patch adds the decoding of this new speed, previously, reading the
> speed of a link operating at this speed showed "Unknown speed" instead
> of "64.0 GT/s".

Looks good!  Thank you for taking care about this.

Reviewed-by: Krzysztof Wilczyński <kw@...ux.com>

Krzysztof