Messages in this thread | | | Subject | Re: [PATCH v3 2/3] uio_pci_generic: add MSI/MSI-X support | From | Avi Kivity <> | Date | Thu, 8 Oct 2015 11:46:30 +0300 |
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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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