linux-kernel - Re: [PATCH AUTOSEL 5.13 01/19] dmaengine: idxd: depends on !UML

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Message-ID: <7dbe6ec5b8e6b6d1e3457d075f21a7f93cc80e9c.camel@sipsolutions.net>
Date:   Tue, 14 Sep 2021 08:56:44 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Sasha Levin <sashal@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     lkp <lkp@...el.com>, "Jiang, Dave" <dave.jiang@...el.com>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Vinod Koul <vkoul@...nel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 5.13 01/19] dmaengine: idxd: depends on !UML

On Mon, 2021-09-13 at 22:33 +0000, Sasha Levin wrote:
> From: Johannes Berg <johannes.berg@...el.com>
> 
> [ Upstream commit b2296eeac91555bd13f774efa7ab7d4b12fb71ef ]

While this commit (and also "dmaengine: ioat: depends on !UML") isn't
*wrong* per se on old kernels, the subject matter is really only
relevant since commit 68f5d3f3b654 ("um: add PCI over virtio emulation
driver"), since previously "UML && PCI" could not be true.

Hence, there's no point applying this (and the ioat one) to anything
older than 5.14.

johannes