From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id AD72B47CC80 for ; Wed, 6 May 2026 15:09:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778080169; cv=none; b=TMYZkiuMBCMm66vasL0cQYse/ucvsyzHiDwT9+yAu0fIVUhEyikObWK6XZ+5WjmKyOnxDoFoRm7FRnkyyPflgyQzWBHGDCJ9PvY+3vSFXn/8y5u0kUzIFlk79zZYYS/lnQqk6RoPwiqbc5s1szNFJ8Qe4/OY3z4y+0yR6RMO1jA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778080169; c=relaxed/simple; bh=e60P5S90aLiIeSY16G6Q8n256OFA/lJp0UcTh+GO4vM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ljNHYy8uFPRsEJ8lbaT8N4fTOasm/8scVByCe4wPBKCSEisoyujnPh9FQju0u6wuiXhJby8Dz1e/w1Dt4oS3V8O9IgaKeK/8Gn64bgc8V6/XsYz1INPbkKgg2nqLUKLy+mMDnS64dcNPefnWxeY9IxUzLi2efAsdO03IrBg1aos= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=ISfuRg0f; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="ISfuRg0f" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id BAF3819F6; Wed, 6 May 2026 08:09:22 -0700 (PDT) Received: from [10.1.196.46] (e134344.arm.com [10.1.196.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1B3783F7B4; Wed, 6 May 2026 08:09:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1778080168; bh=e60P5S90aLiIeSY16G6Q8n256OFA/lJp0UcTh+GO4vM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ISfuRg0fEFibYEZMwVMRwjSYaHTzOy3roOoGU+1tW1TGcWHXzIT4jDmGHzQezoLXR TMSaX0XbunvAt5LPx14kjRFdyxe3eHXiAbDZvr6tffwehagi8ozw2o0EjhUeX6Ii4w 8hQSRj2jyXYuQgnWp38osgi1++JBKtZv207qwmSM= Message-ID: <98d0aae8-25b6-44e9-8bda-9b6afd357dca@arm.com> Date: Wed, 6 May 2026 16:08:16 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Thunderbird Daily Subject: Re: [PATCH v7 0/7] x86,fs/resctrl: Pave the way for MPAM counter assignment To: "Moger, Babu" , linux-kernel@vger.kernel.org Cc: tony.luck@intel.com, reinette.chatre@intel.com, Dave.Martin@arm.com, james.morse@arm.com, babu.moger@amd.com, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, fenghuay@nvidia.com, tan.shaopeng@fujitsu.com References: <20260506082855.3694761-1-ben.horgan@arm.com> <3288177f-6c00-402a-bae0-0741c078e6a7@amd.com> Content-Language: en-US From: Ben Horgan In-Reply-To: <3288177f-6c00-402a-bae0-0741c078e6a7@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 5/6/26 16:01, Moger, Babu wrote: > Hi Ben, > > The patches look good overall. Just one small note: I was testing v6 and noticed that v7 has already been posted. It > would be helpful to leave a few days between versions unless you’re trying to make the merge window. > > Tested-by: Babu Moger > Reviewed-by: Babu Moger Thanks Babu :) > > Thanks > Babu > > On 5/6/2026 3:28 AM, Ben Horgan wrote: >> Essentially a resend of v6, just adding a missing commit message separator, ---, >> in the first commit. All patches now have Reinette's Reviewed-by tag, thanks! >> >> Cover letter from v6: >> >> No functional changes from v5. Just comment and commit message changes based on >> review comments. Changelogs in patches. >> >> Description from a previous version's cover letter: >> >> A little bit of preparatory work to get ready for MPAM counter >> assignment. Resctrl gained support last year for counter assignment for AMD >> machines supporting ABMC. Tighten a few things up, that weren't needed for >> AMD, so that the MPAM driver can emulate ABMC and hence support counter >> assignment. >> >> Based on v7.1-rc2 >> >> v1: >> https://lore.kernel.org/lkml/20260225201905.3568624-1-ben.horgan@arm.com/ >> v2: >> https://lore.kernel.org/lkml/20260313174524.3482767-1-ben.horgan@arm.com/ >> v3: >> https://lore.kernel.org/lkml/20260319162225.378485-1-ben.horgan@arm.com/ >> v4: >> https://lore.kernel.org/lkml/20260326172551.1553871-1-ben.horgan@arm.com/ >> v5: >> https://lore.kernel.org/lkml/20260428130422.2287302-1-ben.horgan@arm.com/ >> v6: >> https://lore.kernel.org/lkml/20260505155741.3591201-1-ben.horgan@arm.com/ >> >> Ben Horgan (7): >>    fs/resctrl: Tidy up the error path in resctrl_mkdir_event_configs() >>    x86,fs/resctrl: Create 'event_filter' files read only if they're not >>      configurable >>    fs/resctrl: Disallow the software controller when MBM counters are >>      assignable >>    fs/resctrl: Add monitor property 'mbm_cntr_assign_fixed' >>    fs/resctrl: Continue counter allocation after failure >>    fs/resctrl: Document that automatic counter assignment is best effort >>    fs/resctrl: Document tasks file behaviour for task id 0 and idle tasks >> >>   Documentation/filesystems/resctrl.rst | 22 +++++++++++----- >>   arch/x86/kernel/cpu/resctrl/monitor.c |  1 + >>   fs/resctrl/internal.h                 |  2 ++ >>   fs/resctrl/monitor.c                  | 30 ++++++++++++++++------ >>   fs/resctrl/rdtgroup.c                 | 36 ++++++++++++++++++--------- >>   include/linux/resctrl.h               | 18 ++++++++------ >>   6 files changed, 77 insertions(+), 32 deletions(-) >> >