Re: [Xen-devel] [RFC PATCH v1 19/21] ARM: NUMA: Initialize ACPI NUMA

[Julien Grall <julien.grall@xxxxxxx>]

Hello Vijay,

On 09/02/17 15:57, vijay.kilari@xxxxxxxxx wrote:
> From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxx>
>
> Call ACPI NUMA initialization under CONFIG_ACPI_NUMA.
>
> Signed-off-by: Vijaya Kumar <Vijaya.Kumar@xxxxxxxxxx>
> ---
>  xen/arch/arm/numa.c | 12 +++++++++++-
>  xen/common/numa.c   |  6 ++++++
>  2 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/xen/arch/arm/numa.c b/xen/arch/arm/numa.c
> index 50c3dea..1d6e16c 100644
> --- a/xen/arch/arm/numa.c
> +++ b/xen/arch/arm/numa.c
> @@ -204,7 +204,17 @@ int __init numa_init(void)
>      for ( i = 0; i < MAX_NUMNODES * 2; i++ )
>          _node_distance[i] = 0;
>
> -    ret = dt_numa_init();
> +#ifdef CONFIG_ACPI_NUMA
> +    if ( !acpi_disabled )
> +    {
> +        acpi_map_uid_to_mpidr();
> +        ret = acpi_numa_init();
> +        if ( ret || srat_disabled() )
> +            goto no_numa;
> +    }
> +    else
> +#endif
We should really have only on call to ACPI in the generic code. Please 
move all of this in a function.
> +        ret = dt_numa_init();
>
>      if ( !ret )
>          ret = numa_initmem_init();
> diff --git a/xen/common/numa.c b/xen/common/numa.c
> index 2f5266a..4c67d38 100644
> --- a/xen/common/numa.c
> +++ b/xen/common/numa.c
> @@ -30,6 +30,7 @@
>  #include <xen/sched.h>
>  #include <xen/errno.h>
>  #include <xen/softirq.h>
> +#include <xen/srat.h>
>  #include <asm/setup.h>
>
>  static int numa_setup(char *s);
> @@ -282,6 +283,11 @@ static __init int numa_setup(char *opt)
>          numa_off = 1;
>      if ( !strncmp(opt,"on",2) )
>          numa_off = 0;
> +    if ( !strncmp(opt,"noacpi",6) )
> +    {
> +        numa_off = 0;
> +        acpi_numa = -1;
> +    }
>
>      return arch_numa_setup(opt);
>  }
--
Julien Grall

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