Re: [Xen-devel] [v3][PATCH 05/16] xen: enable XENMEM_memory_map in hvm

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Chen, Tiejun
> Sent: Thursday, June 11, 2015 9:15 AM
> 
> This patch enables XENMEM_memory_map in hvm. So we can use it to
> setup the e820 mappings.
> 
> Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxx>
> Reviewed-by: Tim Deegan <tim@xxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>

> ---
>  xen/arch/x86/hvm/hvm.c | 2 --
>  xen/arch/x86/mm.c      | 6 ------
>  2 files changed, 8 deletions(-)
> 
> diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
> index f354cb7..fab5637 100644
> --- a/xen/arch/x86/hvm/hvm.c
> +++ b/xen/arch/x86/hvm/hvm.c
> @@ -4728,7 +4728,6 @@ static long hvm_memory_op(int cmd,
> XEN_GUEST_HANDLE_PARAM(void) arg)
> 
>      switch ( cmd & MEMOP_CMD_MASK )
>      {
> -    case XENMEM_memory_map:
>      case XENMEM_machine_memory_map:
>      case XENMEM_machphys_mapping:
>          return -ENOSYS;
> @@ -4804,7 +4803,6 @@ static long hvm_memory_op_compat32(int cmd,
> XEN_GUEST_HANDLE_PARAM(void) arg)
> 
>      switch ( cmd & MEMOP_CMD_MASK )
>      {
> -    case XENMEM_memory_map:
>      case XENMEM_machine_memory_map:
>      case XENMEM_machphys_mapping:
>          return -ENOSYS;
> diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
> index 472c494..4923ccd 100644
> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -4717,12 +4717,6 @@ long arch_memory_op(unsigned long cmd,
> XEN_GUEST_HANDLE_PARAM(void) arg)
>              return rc;
>          }
> 
> -        if ( is_hvm_domain(d) )
> -        {
> -            rcu_unlock_domain(d);
> -            return -EPERM;
> -        }
> -
>          e820 = xmalloc_array(e820entry_t, fmap.map.nr_entries);
>          if ( e820 == NULL )
>          {
> --
> 1.9.1


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