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From: Tony Luck <tony.luck@intel.com>
To: Fenghua Yu <fenghuay@nvidia.com>,
	Reinette Chatre <reinette.chatre@intel.com>,
	Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>,
	Peter Newman <peternewman@google.com>,
	James Morse <james.morse@arm.com>,
	Babu Moger <babu.moger@amd.com>,
	Drew Fustini <dfustini@baylibre.com>,
	Dave Martin <Dave.Martin@arm.com>, Chen Yu <yu.c.chen@intel.com>,
	David E Box <david.e.box@intel.com>,
	x86@kernel.org
Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev,
	Tony Luck <tony.luck@intel.com>
Subject: [PATCH v3 1/7] x86/resctrl: Drop setting of event_group::force_off when insufficient RMIDs
Date: Fri, 27 Mar 2026 16:02:02 -0700	[thread overview]
Message-ID: <20260327230208.18094-2-tony.luck@intel.com> (raw)
In-Reply-To: <20260327230208.18094-1-tony.luck@intel.com>

Setting the force_off flag does not matter when AET features are only
enumerated once (on first mount).

In preparation for enumeration on every mount, drop this because it
overrides user request with rdt= boot option to force enable a feature.

Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 arch/x86/kernel/cpu/resctrl/intel_aet.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/intel_aet.c b/arch/x86/kernel/cpu/resctrl/intel_aet.c
index 89b8b619d5d5..015627401ed2 100644
--- a/arch/x86/kernel/cpu/resctrl/intel_aet.c
+++ b/arch/x86/kernel/cpu/resctrl/intel_aet.c
@@ -214,10 +214,8 @@ static bool all_regions_have_sufficient_rmid(struct event_group *e, struct pmt_f
 		if (!p->regions[i].addr)
 			continue;
 		tr = &p->regions[i];
-		if (tr->num_rmids < e->num_rmid) {
-			e->force_off = true;
+		if (tr->num_rmids < e->num_rmid)
 			return false;
-		}
 	}
 
 	return true;
-- 
2.53.0


  reply	other threads:[~2026-03-27 23:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-23 16:34 [PATCH] x86/resctrl: Allow AET to use PMT/TPMI as loadable modules Tony Luck
2026-03-25 17:17 ` [PATCH v2] " Tony Luck
2026-03-27 23:02 ` [PATCH v3 0/7] " Tony Luck
2026-03-27 23:02   ` Tony Luck [this message]
2026-03-27 23:02   ` [PATCH v3 2/7] fs/resctrl: Add interface to disable a monitor event Tony Luck
2026-03-27 23:02   ` [PATCH v3 3/7] fs,x86/resctrl: Add architecture hooks for every mount/unmount Tony Luck
2026-03-29 12:09     ` Chen, Yu C
2026-03-30 15:50       ` Luck, Tony
2026-03-27 23:02   ` [PATCH v3 4/7] platform/x86/intel/pmt: Export PMT enumeration functions as GPL Tony Luck
2026-03-27 23:02   ` [PATCH v3 5/7] x86/resctrl: Allow AET to use PMT/TPMI as loadable modules Tony Luck
2026-03-27 23:02   ` [PATCH v3 6/7] x86/resctrl: Delete intel_aet_exit() Tony Luck
2026-03-27 23:02   ` [PATCH v3 7/7] x86/resctrl: Downgrade dependency of AET on INTEL_PMT Tony Luck

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