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SubjectRe: [PATCH v17 08/33] x86,fs/resctrl: Detect Assignable Bandwidth Monitoring feature details
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Hi Babu,

On 8/14/25 7:25 PM, Babu Moger wrote:
> ABMC feature details are reported via CPUID Fn8000_0020_EBX_x5.
> Bits Description
> 15:0 MAX_ABMC Maximum Supported Assignable Bandwidth
> Monitoring Counter ID + 1
>
> The feature details are documented in APM listed below [1].
> [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming
> Publication # 24593 Revision 3.41 section 19.3.3.3 Assignable Bandwidth
> Monitoring (ABMC).
>
> Detect the feature and number of assignable counters supported. For
> backward compatibility, upon detecting the assignable counter feature,
> enable the mbm_total_bytes and mbm_local_bytes events that users are
> familiar with as part of original L3 MBM support.
>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---

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

Reinette

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