linux-kernel - Re: [PATCH v3 0/3] uio: add MSI/MSI-X support to uio_pci

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Message-ID: <20151006160014.GC25124@scylladb.com>
Date:	Tue, 6 Oct 2015 19:00:14 +0300
From:	Gleb Natapov <gleb@...lladb.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Avi Kivity <avi@...udius-systems.com>,
	Vlad Zolotarov <vladz@...udius-systems.com>,
	linux-kernel@...r.kernel.org, hjk@...sjkoch.de, corbet@....net,
	gregkh@...uxfoundation.org, bruce.richardson@...el.com,
	gleb@...udius-systems.com, stephen@...workplumber.org,
	alexander.duyck@...il.com
Subject: Re: [PATCH v3 0/3] uio: add MSI/MSI-X support to uio_pci_generic
 driver

On Tue, Oct 06, 2015 at 06:15:54PM +0300, Michael S. Tsirkin wrote:
> > While it is possible that userspace malfunctions and accidentally programs
> > MSI incorrectly, the risk is dwarfed by the ability of userspace to program
> > DMA incorrectly.
> 
> That seems to imply that for the upstream kernel this is not a valid usecase at all.
> 
Are you implying that uio_pci_generic should be removed from upstream
kernel because Avi did not describe anything that cannot be done with
upstream kernel right now.

--
			Gleb.
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