Re: [Xen-devel] [PATCH 3/7] Nested VMX: Force check ISR when L2 is running

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 09/08/13 09:49, Yang Zhang wrote:
> From: Yang Zhang <yang.z.zhang@xxxxxxxxx>
>
> If L2 is running, external interrupt is allowed to notify CPU only
> when it has higher priority than current in servicing interrupt. Since
> there is no vAPIC-v for L2, so force check isr when L2 is running.
>
> Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
> ---
>  xen/arch/x86/hvm/vlapic.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c
> index 20a36a0..f2594dd 100644
> --- a/xen/arch/x86/hvm/vlapic.c
> +++ b/xen/arch/x86/hvm/vlapic.c
> @@ -37,6 +37,7 @@
>  #include <asm/hvm/io.h>
>  #include <asm/hvm/support.h>
>  #include <asm/hvm/vmx/vmx.h>
> +#include <asm/hvm/nestedhvm.h>
>  #include <public/hvm/ioreq.h>
>  #include <public/hvm/params.h>
>  
> @@ -1037,7 +1038,8 @@ int vlapic_has_pending_irq(struct vcpu *v)
>      if ( irr == -1 )
>          return -1;
>  
> -    if ( vlapic_virtual_intr_delivery_enabled() )
> +    if ( vlapic_virtual_intr_delivery_enabled() &&
> +            !nestedhvm_vcpu_in_guestmode(v) )

Alignment, but otherwise ok.

~Andrew

>          return irr;
>  
>      isr = vlapic_find_highest_isr(vlapic);


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