On 09/19/2010 02:34 PM, Avi Kivity wrote:
Our current real mode interrupt injection injects external interrupts as software interrupts, which is somewhat hacky. This is problematic in big real mode (can't use vmx there) and on via processors (a cpu bug prevents this from working correctly). Replace the current mechanism with emulation; we now inject the interrupt by looking up the vector in the IVT, updating the stack, etc. using the emulator. This is somewhat slower but works in all cases.
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