From patchwork Fri Jan 30 07:46:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Wu X-Patchwork-Id: 5747431 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 52B619F665 for ; Fri, 30 Jan 2015 07:50:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 88D0B200DB for ; Fri, 30 Jan 2015 07:50:36 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C96AB2024D for ; Fri, 30 Jan 2015 07:50:35 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YH6K3-0000X2-Bd; Fri, 30 Jan 2015 07:48:59 +0000 Received: from szxga02-in.huawei.com ([119.145.14.65]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YH6Jm-0000EG-L4 for linux-arm-kernel@lists.infradead.org; Fri, 30 Jan 2015 07:48:43 +0000 Received: from 172.24.2.119 (EHLO szxeml431-hub.china.huawei.com) ([172.24.2.119]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CGO02231; Fri, 30 Jan 2015 15:47:56 +0800 (CST) Received: from localhost (10.177.24.136) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.158.1; Fri, 30 Jan 2015 15:47:35 +0800 From: Yun Wu To: , , Subject: [PATCH 3/5] irqchip: gicv3-its: use 64KB page as default granule Date: Fri, 30 Jan 2015 15:46:47 +0800 Message-ID: <1422604009-9248-4-git-send-email-wuyun.wu@huawei.com> X-Mailer: git-send-email 1.9.4.msysgit.1 In-Reply-To: <1422604009-9248-1-git-send-email-wuyun.wu@huawei.com> References: <1422604009-9248-1-git-send-email-wuyun.wu@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.136] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150129_234842_913271_33D9EB10 X-CRM114-Status: UNSURE ( 9.37 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: Yun Wu , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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(-) -- 1.8.0 diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 2a08d85..430bc92 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -801,7 +801,7 @@ static int its_alloc_tables(struct its_node *its) int err; int i; int size; - int psz = PAGE_SIZE; + int psz = SZ_64K; u64 shr = GITS_BASER_InnerShareable; for (i = 0; i < GITS_BASER_NR_REGS; i++) {