Re: [PATCH 0/4] Real mode interrupt injection emulation

[Marcelo Tosatti <mtosatti@redhat.com>]

On Sun, Sep 19, 2010 at 02:34:04PM +0200, 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.
> 
> Avi Kivity (1):
>   KVM: VMX: Respect interrupt window in big real mode
> 
> Mohammed Gamal (3):
>   KVM: x86 emulator: Expose emulate_int_real()
>   KVM: Add kvm_inject_realmode_interrupt() wrapper
>   KVM: VMX: Emulated real mode interrupt injection
> 
>  arch/x86/include/asm/kvm_emulate.h |    3 +-
>  arch/x86/kvm/vmx.c                 |   74 +++++++----------------------------
>  arch/x86/kvm/x86.c                 |   29 ++++++++++++++
>  arch/x86/kvm/x86.h                 |    1 +
>  4 files changed, 47 insertions(+), 60 deletions(-)
> 
> -- 
> 1.7.2.3

Applied, thanks.