linux-kernel - Re: [PATCH net 0/2] net: ixgbe: Use new flag to disable Relaxed Ordering

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Date:   Wed, 16 Aug 2017 10:56:47 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     dingtianhong@...wei.com
Cc:     jeffrey.t.kirsher@...el.com, keescook@...omium.org,
        linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org, alexander.duyck@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH net 0/2] net: ixgbe: Use new flag to disable Relaxed
 Ordering

From: Ding Tianhong <dingtianhong@...wei.com>
Date: Wed, 16 Aug 2017 17:41:45 +0800

> The new flag PCI_DEV_FLAGS_NO_RELAXED_ORDERING has been added
> to indicate that Relaxed Ordering Attributes (RO) should not
> be used for Transaction Layer Packets (TLP) targeted toward
> these affected Root Port, it will clear the bit4 in the PCIe
> Device Control register, so the PCIe device drivers could
> query PCIe configuration space to determine if it can send
> TLPs to Root Port with the Relaxed Ordering Attributes set.
> 
> The ixgbe driver could use this flag to determine if it can
> send TLPs to Root Port with the Relaxed Ordering Attributes set.

I'll let the Intel guys pick this up.