Re: [Xen-devel] [RFC PATCH V2 12/26] X86/vvtd: Add MMIO handler for VVTD

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, May 18, 2017 at 01:34:42AM -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/arch/x86/hvm/vvtd.c | 127 
> ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 127 insertions(+)
> 
> diff --git a/xen/arch/x86/hvm/vvtd.c b/xen/arch/x86/hvm/vvtd.c
> index e364f2b..b0a23ee 100644
> --- a/xen/arch/x86/hvm/vvtd.c
> +++ b/xen/arch/x86/hvm/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)
> +#define VVTD_DBG_RW       (1<<2)
> +#define VVTD_DBG_FAULT    (1<<3)
> +#define VVTD_DBG_EOI      (1<<4)

Use 1U and add spaces around <<.

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