Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758921AbcLAHqm (ORCPT ); Thu, 1 Dec 2016 02:46:42 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:16027 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758705AbcLAHqj (ORCPT ); Thu, 1 Dec 2016 02:46:39 -0500 From: Majun To: , , , , , , , , , , CC: , , Subject: [RFC PATCH 0/3] Add a new flag for ITS device to control indirect route Date: Thu, 1 Dec 2016 15:45:57 +0800 Message-ID: <1480578360-9268-1-git-send-email-majun258@huawei.com> X-Mailer: git-send-email 1.9.5.msysgit.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.249.226] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 978 Lines: 22 From: MaJun For current ITS driver, two level table (indirect route) is enabled when the memory used for LPI route table over the limit(64KB * 2) size. But this function impact the performance of LPI interrupt actually because need more time to look up the table. Although this function can save the memory needed, we'd better let the user to decide enable or disable this function. MaJun (3): Binding: Add a new property string in ITS node to control the two-level route function irqchip/gicv3-its:irqchip/gicv3-its: add a new flag to control indirect route in DT mode irqchip/gicv3-its:irqchip/gicv3-its: Add a new flag to control indirect route function in ACPI mode. .../bindings/interrupt-controller/arm,gic-v3.txt | 3 +++ drivers/irqchip/irq-gic-v3-its.c | 19 ++++++++++++++----- include/acpi/actbl1.h | 3 ++- 3 files changed, 19 insertions(+), 6 deletions(-) -- 1.7.12.4