Re: [PATCH v11 3/3] x86, apicv: add virtual interrupt delivery support

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On Mon, Jan 21, 2013 at 11:18:28PM +0200, Gleb Natapov wrote:
> On Mon, Jan 21, 2013 at 07:05:43PM -0200, Marcelo Tosatti wrote:
> > > +	struct vcpu_vmx *vmx = to_vmx(vcpu);
> > > +
> > > +	if (WARN_ONCE((vector > 255),
> > > +		"KVM VMX: vector (%d) out of range\n", vector))
> > > +		return;
> > 
> > Please remove the WARN_ON, inject triple fault if this happens
> > (and add a tracepoint).
> > 
> Since this cannot be triggered by a guest triple fault is unwarranted.
> Vector can be greater than 255 here only due to KVM bug, so WARN() or
> even BUG() is appropriate.

Then BUG_ON().

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