Re: [Xen-devel] [PATCH v3] x86/HVM: Merge HVM and PVH hypercall tables

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 17/12/15 23:00, Boris Ostrovsky wrote:
> diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
> index a7767f8..871aca0 100644
> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -3019,6 +3019,25 @@ long do_mmuext_op(
>              break;
>          }
>  
> +        if ( has_hvm_container_domain(d) )
> +        {
> +            switch ( op.cmd )
> +            {
> +            case MMUEXT_PIN_L1_TABLE:
> +            case MMUEXT_PIN_L2_TABLE:
> +            case MMUEXT_PIN_L3_TABLE:
> +            case MMUEXT_PIN_L4_TABLE:
> +            case MMUEXT_UNPIN_TABLE:
> +                if ( is_control_domain(d) )
> +                    break;

This needs to be an XSM check, rather than a dom0 check.  Consider the
usecase of a PVH/DMLite domain builder stubdomain.

Everything else looks OK.

~Andrew

> +                /* fallthrough */
> +            default:
> +                MEM_LOG("Invalid extended pt command %#x", op.cmd);
> +                rc = -EOPNOTSUPP;
> +                goto done;
> +            }
> +        }
> +
>          okay = 1;
>  
>          switch ( op.cmd )


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