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Re: [Xen-devel] [PATCH v2] interrupts: allow guest to set and clear MSI-X mask bit

>>> On 13.08.13 at 19:37, Joby Poriyath <joby.poriyath@xxxxxxxxxx> wrote:
> Guest was allowed to modify the MSI-X control bit to reduce the load on 
> dom0.
> Otherwise this would have to be emulated by qemu-dm. I found a paper 
> which explains this in detail (http://zhenxiao.com/read/SR-IOV.pdf).

Without going through it in full, I wasn't able to find any mention
of the guest being granted to the MSI-X mask bit (searching for
all of "MSI-X", "mask", and "bit" individually). Which would anyway
be more consistent with MSI, where the mask bit in PCI config
space, and hence the guest can't be allowed direct access in any


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