On Thu, Oct 01, 2015 at 11:52:26AM +0300, Avi Kivity wrote: > I still don't understand your objection to the patch: > > > MSI messages are memory writes so any generic device capable > of MSI is capable of corrupting kernel memory. > This means that a bug in userspace will lead to kernel memory corruption > and crashes. This is something distributions can't support. > > > If a distribution feels it can't support this configuration, it can disable > the > uio_pci_generic driver, or refuse to support tainted kernels.? If it feels it > can (and many distributions are starting to support dpdk), then you're just > denying it the ability to serve its users.
I don't, and can't deny users anything. I merely think upstream should avoid putting this driver in-tree. By doing this, driver writers will be pushed to develop solutions that can't crash kernel. I pointed out one way to build it, there are sure to be more. As far as I could see, without this kind of motivation, people do not even want to try. -- MST
