Re: [PATCH v9 05/31] x86,fs/resctrl: Improve domain type checking

[Reinette Chatre <reinette.chatre@intel.com>]

Hi Tony,

On 8/29/25 12:33 PM, Tony Luck wrote:
> The rdt_domain_hdr structure is used in both control and monitor
> domain structures to provide common methods for operations such as
> adding a CPU to a domain, removing a CPU from a domain, accessing
> the mask of all CPUs in a domain.
> 
> rdt_domain_hdr::type provides a simple check whether a domain is a
> control or monitor domain so that programming errors operating
> on domains will be quickly caught. This is insufficient to
> catch errors when other resources besides L3 support monitor
> events.
> 
> Add rdt_domain_hdr::rid to contain the resource id and initialize it
> as part of domain structure allocation done by CPU online handler. Call
> domain_header_is_valid() to sanity check both the type and resource id
> before using container_of() to get a pointer to the associated domain.
> 
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---

Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>

Reinette