Re: [PATCH] HV: Fix definition of struct hv_vp_assist_page.

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On Mon, 21 May 2018, Tianyu Lan wrote:

KY ????

> The struct hv_vp_assist_page was defined incorrectly.
> The "vtl_control" should be u64[3], "nested_enlightenments_control"
> should be a u64 and there is 7 reserved bytes following "enlighten_vmentry".
> This patch is to fix it.
> 
> Signed-off-by: Lan Tianyu <Tianyu.Lan@xxxxxxxxxxxxx>
> ---
>  arch/x86/include/asm/hyperv-tlfs.h | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> index f7be6d03a310..fae0a5431cdd 100644
> --- a/arch/x86/include/asm/hyperv-tlfs.h
> +++ b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -496,10 +496,11 @@ struct hv_timer_message_payload {
>  /* Define virtual processor assist page structure. */
>  struct hv_vp_assist_page {
>  	__u32 apic_assist;
> -	__u32 reserved;
> -	__u64 vtl_control[2];
> -	__u64 nested_enlightenments_control[2];
> -	__u32 enlighten_vmentry;
> +	__u32 reserved1;
> +	__u64 vtl_control[3];
> +	__u64 nested_enlightenments_control;
> +	__u8 enlighten_vmentry;
> +	__u8 reserved2[7];
>  	__u64 current_nested_vmcs;
>  };
>  
> -- 
> 2.14.3
> 
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