Re: [PATCH] deal with interrupt shadow state for emulated instruction
From: H. Peter Anvin
Date: Thu Apr 16 2009 - 18:41:19 EST
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.
-hpa
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