Re: [Xen-devel] [PATCH 12/25] X86/vvtd: Add MMIO handler for VVTD

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Jun 29, 2017 at 01:50:44AM -0400, Lan Tianyu wrote:
> From: Chao Gao <chao.gao@xxxxxxxxx>
> 
> This patch adds VVTD MMIO handler to deal with MMIO access.
> 
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
> Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
> ---
>  xen/drivers/passthrough/vtd/vvtd.c | 114 
> +++++++++++++++++++++++++++++++++++++
>  1 file changed, 114 insertions(+)
> 
> diff --git a/xen/drivers/passthrough/vtd/vvtd.c 
> b/xen/drivers/passthrough/vtd/vvtd.c
> index a6735ca..0945970 100644
> --- a/xen/drivers/passthrough/vtd/vvtd.c
> +++ b/xen/drivers/passthrough/vtd/vvtd.c
> @@ -50,6 +50,38 @@ struct vvtd {
>      struct page_info *regs_page;
>  };
>  
> +#define __DEBUG_VVTD__
> +#ifdef __DEBUG_VVTD__
> +extern unsigned int vvtd_debug_level;
> +#define VVTD_DBG_INFO     1
> +#define VVTD_DBG_TRANS    (1<<1)

(1U << 1)

And similar below.

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