tree 74ea5711aa9884aa5bee97282c52c32659aca53a
parent 12264760e46077a65c1240ac0b27dfa34b402158
author Avi Kivity <avi@qumranet.com> 1194538760 +0200
committer Avi Kivity <avi@qumranet.com> 1201708380 +0200

KVM: VMX: Use vmx to inject real-mode interrupts

Instead of injecting real-mode interrupts by writing the interrupt frame into
guest memory, abuse vmx by injecting a software interrupt.  We need to
pretend the software interrupt instruction had a length > 0, so we have to
adjust rip backward.

This lets us not to mess with writing guest memory, which is complex and also
sleeps.

Signed-off-by: Avi Kivity <avi@qumranet.com>