Messages in this thread | | | Date | Sun, 19 Apr 2009 11:26:29 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH] deal with interrupt shadow state for emulated instruction |
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H. Peter Anvin wrote: > Avi Kivity wrote: >> >> We don't emulate guest user mode. >> >> Well, if guest userspace can convince its kernel to give it access to >> some memory mapped I/O register, I guess it can execute repeated 'mov >> ss, mmio' and starve the guest kernel. >> > > It doesn't need a MMIO register to do that, even. >
Can you explain how?
-- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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