From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B536AC33CAC for ; Thu, 6 Feb 2020 07:58:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9581321775 for ; Thu, 6 Feb 2020 07:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728143AbgBFH6l (ORCPT ); Thu, 6 Feb 2020 02:58:41 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:43906 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728105AbgBFH6j (ORCPT ); Thu, 6 Feb 2020 02:58:39 -0500 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 1711D7C9F717CA595D3C; Thu, 6 Feb 2020 15:58:33 +0800 (CST) Received: from DESKTOP-8RFUVS3.china.huawei.com (10.173.222.27) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.439.0; Thu, 6 Feb 2020 15:58:24 +0800 From: Zenghui Yu To: , CC: , , , , , Zenghui Yu Subject: [PATCH v2 1/6] irqchip/gic-v4.1: Fix programming of GICR_VPROPBASER_4_1_SIZE Date: Thu, 6 Feb 2020 15:57:06 +0800 Message-ID: <20200206075711.1275-2-yuzenghui@huawei.com> X-Mailer: git-send-email 2.23.0.windows.1 In-Reply-To: <20200206075711.1275-1-yuzenghui@huawei.com> References: <20200206075711.1275-1-yuzenghui@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.173.222.27] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The Size field of GICv4.1 VPROPBASER register indicates number of pages minus one and together Page_Size and Size control the vPEID width. Let's respect this requirement of the architecture. Signed-off-by: Zenghui Yu --- 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 e5a25d97f8db..992bc72cab6f 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -2531,7 +2531,7 @@ static int allocate_vpe_l1_table(void) npg = 1; } - val |= FIELD_PREP(GICR_VPROPBASER_4_1_SIZE, npg); + val |= FIELD_PREP(GICR_VPROPBASER_4_1_SIZE, npg - 1); /* Right, that's the number of CPU pages we need for L1 */ np = DIV_ROUND_UP(npg * psz, PAGE_SIZE); -- 2.19.1