From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 41A7249253A for ; Thu, 4 Jun 2026 16:58:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780592283; cv=none; b=EUvWT+e7IkkVz2ViEBLamL6e7kJcH0amrvL0VpuyQVRtDik+4wrzNy6tjiU6NPgX5QwiBNd0lcV6oY7CEkuPtGchOfz+wloRIikvhN5n8EXQGjWbMhOG8sjHsWyJhQL9pj9NujcwRl2sZ2cbqO+Qdhwn8+E9OpEiqr7UxC+7uGM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780592283; c=relaxed/simple; bh=FauGC+BxbBjgrDRPbxs4/JYq54AiGPGaIiP//7DU3Ag=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=GJyR26WOis/9159Sor+TmDEQX97MyihVUiKUBPm23rAOfgfB27beEycadQmeQYcz7pgCTvLYQ83LPdPKMVxfvlHmm6r0zXiHh9ZtRr111WHWlRYIOB7b6ZnlBNS9ppOovpuRsLDfotC+YsrNOtzCritBED0UlDVVMhpzBzK8a+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=egFLcTAC; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="egFLcTAC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BDAB1F00893; Thu, 4 Jun 2026 16:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780592281; bh=pxCw+NjaNmGAO6AH2Cc4d/qwq93l24c+KxKWD8B9czw=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=egFLcTACRx1uqRvSSnWYvtt//jnNnNsulZRYko/zPP/Q/iRV26LckoypPX4/VJDtq llqNaSvr2seOV9VolLxngtbsSzOlsUcypLduiXXSFqo+w9MYoJat14uX2pBko6Nl0m OVxEDOxOA97o4rtcwH0gpb4TkwySMHOzHDw2JNZjF1uef6IKhDVA2mesn8RZz8f3Tv UA9NnFpI7K8dK8z9vvaon5hzfhdzcgDICSeoD9yXx0QAvG7VIVylRYBKtMSJiOHkTV xl+p3oL5EwxR5dhO9kWDu6GzDFxTgrqC9XqJLeF73t6V21oSengKWRAUm6PVDsK9vJ sducoS2vJguPw== From: Thomas Gleixner To: Chen Yu , tony.luck@intel.com, reinette.chatre@intel.com Cc: x86@kernel.org, linux-kernel@vger.kernel.org, bp@alien8.de, mingo@redhat.com, dave.hansen@linux.intel.com, hpa@zytor.com, dave.martin@arm.com, james.morse@arm.com, fenghuay@nvidia.com, babu.moger@amd.com, anil.keshavamurthy@broadcom.com Subject: Re: [PATCH v2 2/6] x86/resctrl: Parse ACPI CMRC table In-Reply-To: References: Date: Thu, 04 Jun 2026 18:57:57 +0200 Message-ID: <87y0gu450q.ffs@fw13> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Jun 05 2026 at 00:11, Chen Yu wrote: > The CMRC (Cache Monitoring Registers for CPU Agents Description) > sub-table of ERDT describes the MMIO registers used to read > cache monitoring counters (e.g. LLC occupancy) for an RMD. > > Parse each CMRC sub-table, ioremap its register window, and save > the CMRC pointer in the corresponding ERDT domain entry so that > later monitoring code can read the counters via MMIO. > > Suggested-by: Tony Luck > Signed-off-by: Chen Yu > --- > arch/x86/kernel/cpu/resctrl/erdt.c | 40 ++++++++++++++++++++++++++++++ > 1 file changed, 40 insertions(+) > > diff --git a/arch/x86/kernel/cpu/resctrl/erdt.c b/arch/x86/kernel/cpu/resctrl/erdt.c > index 3f309a4b15c8..d1eca4594f09 100644 > --- a/arch/x86/kernel/cpu/resctrl/erdt.c > +++ b/arch/x86/kernel/cpu/resctrl/erdt.c > @@ -38,6 +38,7 @@ static bool erdt_available; > static DEFINE_XARRAY(erdt_domain_xa); /* Indexed by L3 cache ID */ > > #define ERDT_VALID_VERSION 1 > +#define CMRC_VALID_INDEX_FUNC_VERSION 1 Please make this tabular so it's easy to parse #define ERDT_VALID_VERSION 1 #define CMRC_VALID_INDEX_FUNC_VERSION 1