Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754919AbbBOJeX (ORCPT ); Sun, 15 Feb 2015 04:34:23 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:48923 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754646AbbBOJdf (ORCPT ); Sun, 15 Feb 2015 04:33:35 -0500 From: Yun Wu To: , , CC: , , Yun Wu Subject: [PATCH v2 2/6] irqchip: gicv3-its: use 64KB page as default granule Date: Sun, 15 Feb 2015 17:31:59 +0800 Message-ID: <1423992723-5028-3-git-send-email-wuyun.wu@huawei.com> X-Mailer: git-send-email 1.9.4.msysgit.1 In-Reply-To: <1423992723-5028-1-git-send-email-wuyun.wu@huawei.com> References: <1423992723-5028-1-git-send-email-wuyun.wu@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.24.136] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.54E067BC.0126,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 757b9529436e9f0d6dbed8dea39cda67 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1146 Lines: 34 The field of page size in register GITS_BASERn might be read-only if an implementation only supports a single, fixed page size. But currently the ITS driver will throw out an error when PAGE_SIZE is less than the minimum size supported by an ITS. So addressing this problem by using 64KB pages as default granule for all the ITS base tables. Signed-off-by: Yun Wu --- drivers/irqchip/irq-gic-v3-its.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 69eeea3..f5bfa42 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -800,7 +800,7 @@ static int its_alloc_tables(struct its_node *its) { int err; int i; - int psz = PAGE_SIZE; + int psz = SZ_64K; u64 shr = GITS_BASER_InnerShareable; for (i = 0; i < GITS_BASER_NR_REGS; i++) { -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/