Re: [Xen-devel] [PATCH 4/7] Nested VMX: Add interface to update vPPR

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 09/08/13 09:49, Yang Zhang wrote:
> From: Yang Zhang <yang.z.zhang@xxxxxxxxx>
>
> Add vlapic_set_ppr() to allow update vPPR which in virtual apic page.
>
> Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

> ---
>  xen/arch/x86/hvm/vlapic.c        |    8 ++++++++
>  xen/include/asm-x86/hvm/vlapic.h |    1 +
>  2 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c
> index f2594dd..caab9ea 100644
> --- a/xen/arch/x86/hvm/vlapic.c
> +++ b/xen/arch/x86/hvm/vlapic.c
> @@ -168,6 +168,14 @@ static uint32_t vlapic_get_ppr(struct vlapic *vlapic)
>      return ppr;
>  }
>  
> +uint32_t vlapic_set_ppr(struct vlapic *vlapic)
> +{
> +   uint32_t ppr = vlapic_get_ppr(vlapic);
> +   vlapic_set_reg(vlapic, APIC_PROCPRI, ppr);
> +
> +   return ppr;
> +}
> +
>  static int vlapic_match_logical_addr(struct vlapic *vlapic, uint8_t mda)
>  {
>      int result = 0;
> diff --git a/xen/include/asm-x86/hvm/vlapic.h 
> b/xen/include/asm-x86/hvm/vlapic.h
> index d8c9511..6109137 100644
> --- a/xen/include/asm-x86/hvm/vlapic.h
> +++ b/xen/include/asm-x86/hvm/vlapic.h
> @@ -108,6 +108,7 @@ void vlapic_tdt_msr_set(struct vlapic *vlapic, uint64_t 
> value);
>  uint64_t vlapic_tdt_msr_get(struct vlapic *vlapic);
>  
>  int vlapic_accept_pic_intr(struct vcpu *v);
> +uint32_t vlapic_set_ppr(struct vlapic *vlapic);
>  
>  void vlapic_adjust_i8259_target(struct domain *d);
>  


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