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 9F3A4426EC1 for ; Fri, 10 Jul 2026 11:56:15 +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=1783684583; cv=none; b=uDnr+hreVscJyT9NLMzJrnh6zPU9oUQ7PRK5rWHFA5QKy5jSgdwrdTQgDq0ZGej5bAUMttQF53HiqGJcOfXQKCzBABYOMackS64e4fx0jdP4UU0kLphJtazacjSxky0cWN6/wZnmHnVPAFB/FEePr3Em7Cz9Q/WtCLdhWn3zLuc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783684583; c=relaxed/simple; bh=aDNC81Q5P6V6soD3KMNRVbYyVWehpRsMTUtQd8Rvi28=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LQs8DWDSSULBOamKvGk214rM0FNqFHn1R31/RKWtjYWQp5CKE0oDZd9HOm3wgK1c3eVD45K5m1NrSkPpn7DeVJYTL2A0YVF+mywGgSpQ54Zo21Ss0hlWKvLRCEl/PjXvOHPsy5alBR7PCL6KHb02VWZrjy8ndOusE9qd+ZBFTWk= 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=OhVa8Nk9; 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="OhVa8Nk9" 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 576A81E7D; Fri, 10 Jul 2026 04:56:09 -0700 (PDT) Received: from e134344.cambridge.arm.com (e134344.arm.com [10.2.212.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5CEBA3F85F; Fri, 10 Jul 2026 04:56:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1783684573; bh=aDNC81Q5P6V6soD3KMNRVbYyVWehpRsMTUtQd8Rvi28=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OhVa8Nk9V1vPmQhXHtPBP7OzyhMugXg3NCHv6ERNSa9aQD/EeNW0LIO3S9fkJge9A MRpPCiCWlLEjcFjQ2V1xfL0hkcxqvNIVMCsU2YSupuzo5l09kNhS4zHrXIz9VVZyYB HaE3f6zfuYI87acleQ8J2DGHPki2OZ8J/hTNzx18= From: Ben Horgan To: ben.horgan@arm.com Cc: james.morse@arm.com, reinette.chatre@intel.com, fenghuay@nvidia.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dave.martin@arm.com, andre.przywara@arm.com Subject: [PATCH v1 11/11] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg Date: Fri, 10 Jul 2026 12:55:45 +0100 Message-ID: <20260710115546.29644-12-ben.horgan@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260710115546.29644-1-ben.horgan@arm.com> References: <20260710115546.29644-1-ben.horgan@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Each component cfg is sized by the size of a per-PARTID multiplied by the number of PARTIDs. On a platform sized to push the limits of the specification, the allocation using kzalloc_objs() will consistently fail. Change to use kvzmalloc_objs() so that large allocations fall back to vmalloc() based allocations. Fixes: 09b89d2a72f3 ("arm_mpam: Allow configuration to be applied and restored during cpu online") Signed-off-by: Ben Horgan --- drivers/resctrl/mpam_devices.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/resctrl/mpam_devices.c b/drivers/resctrl/mpam_devices.c index 9412ffde1cf1..9a7954b7a2af 100644 --- a/drivers/resctrl/mpam_devices.c +++ b/drivers/resctrl/mpam_devices.c @@ -157,7 +157,7 @@ static void mpam_free_garbage(void) if (iter->pdev) devm_kfree(&iter->pdev->dev, iter->to_free); else - kfree(iter->to_free); + kvfree(iter->to_free); } } @@ -2667,7 +2667,7 @@ static int __allocate_component_cfg(struct mpam_component *comp) if (comp->cfg) return 0; - comp->cfg = kzalloc_objs(*comp->cfg, mpam_partid_max + 1); + comp->cfg = kvzalloc_objs(*comp->cfg, mpam_partid_max + 1); if (!comp->cfg) return -ENOMEM; -- 2.43.0