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Message-ID: <BYAPR12MB32692AF2BA127C5DA5B74804D3C70@BYAPR12MB3269.namprd12.prod.outlook.com>
Date: Tue, 23 Jul 2019 10:07:51 +0000
From: Jose Abreu <Jose.Abreu@...opsys.com>
To: Jon Hunter <jonathanh@...dia.com>,
Jose Abreu <Jose.Abreu@...opsys.com>,
Lars Persson <lists@...h.nu>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-stm32@...md-mailman.stormreply.com"
<linux-stm32@...md-mailman.stormreply.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Joao Pinto <Joao.Pinto@...opsys.com>,
"David S . Miller" <davem@...emloft.net>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Maxime Ripard <maxime.ripard@...tlin.com>,
Chen-Yu Tsai <wens@...e.org>,
linux-tegra <linux-tegra@...r.kernel.org>
Subject: RE: [PATCH net-next 3/3] net: stmmac: Introducing support for Page
Pool
From: Jon Hunter <jonathanh@...dia.com>
Date: Jul/23/2019, 11:01:24 (UTC+00:00)
> This appears to be a winner and by disabling the SMMU for the ethernet
> controller and reverting commit 954a03be033c7cef80ddc232e7cbdb17df735663
> this worked! So yes appears to be related to the SMMU being enabled. We
> had to enable the SMMU for ethernet recently due to commit
> 954a03be033c7cef80ddc232e7cbdb17df735663.
Finally :)
However, from "git show 954a03be033c7cef80ddc232e7cbdb17df735663":
+ There are few reasons to allow unmatched stream bypass, and
+ even fewer good ones. If saying YES here breaks your board
+ you should work on fixing your board.
So, how can we fix this ? Is your ethernet DT node marked as
"dma-coherent;" ?
---
Thanks,
Jose Miguel Abreu
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