linux-kernel - Re: [PATCH 2/4] ACPI/MRRM: Create /sys/devices/system/memory/rangeX ABI

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Message-ID: <f26fd867-d348-40cf-ac55-023ac814cc50@redhat.com>
Date: Tue, 11 Feb 2025 14:08:11 +0100
From: David Hildenbrand <david@...hat.com>
To: Tony Luck <tony.luck@...el.com>, Robert Moore <robert.moore@...el.com>,
 "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, Len Brown <lenb@...nel.org>
Cc: linux-acpi@...r.kernel.org, acpica-devel@...ts.linux.dev,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
 Oscar Salvador <osalvador@...e.de>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Danilo Krummrich <dakr@...nel.org>, Andrew Morton
 <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] ACPI/MRRM: Create /sys/devices/system/memory/rangeX
 ABI

On 10.02.25 22:12, Tony Luck wrote:
> Perf and resctrl users need an enumeration of which memory addresses
> are bound to which "region" tag.
> 
> Parse the ACPI MRRM table and add /sys entries for each memory range
> describing base address, length, and which region tags apply for
> same-socket and cross-socket access.

How does an example in /sys/devices/system/memory/ look like later?

 From a quick glimpse, I am not sure if this really belongs into 
/sys/devices/system/memory/, but I am missing some information in cover 
letter / patch.

-- 
Cheers,

David / dhildenb