Re: [PATCH v3 2/3] uio_pci_generic: add MSI/MSI-X support

[Avi Kivity]

On 10/08/2015 10:32 AM, Michael S. Tsirkin wrote:
> On Thu, Oct 08, 2015 at 08:33:45AM +0300, Avi Kivity wrote:
> > It is good practice to defend against root oopsing the kernel, but in some
> > cases it cannot be achieved.
> Absolutely. That's one of the issues with these patches. They don't even
> try where it's absolutely possible.

Are you referring to blocking the maps of the msix BAR areas?

I think there is value in that.  The value is small, because a 
corruption is more likely in the dynamic memory responsible for tens of 
millions of DMA operations per second, rather than a static 4K area, but 
it exists.
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