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=-13.0 required=3.0 tests=BAYES_00, 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 76FA0C433E1 for ; Fri, 31 Jul 2020 07:43:48 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 359A72067D for ; Fri, 31 Jul 2020 07:43:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 359A72067D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E384F4B434; Fri, 31 Jul 2020 03:43:47 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bEedentUZHDO; Fri, 31 Jul 2020 03:43:46 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8A0554B505; Fri, 31 Jul 2020 03:43:45 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9DB294B37C for ; Fri, 31 Jul 2020 03:43:44 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vwHS72yh5I2A for ; Fri, 31 Jul 2020 03:43:43 -0400 (EDT) Received: from huawei.com (szxga04-in.huawei.com [45.249.212.190]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 56E184B36E for ; Fri, 31 Jul 2020 03:43:38 -0400 (EDT) Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id AC3D96735F1894E630EB; Fri, 31 Jul 2020 15:43:31 +0800 (CST) Received: from DESKTOP-FPN2511.china.huawei.com (10.174.187.42) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.487.0; Fri, 31 Jul 2020 15:43:25 +0800 From: Jingyi Wang To: , , Subject: [kvm-unit-tests PATCH v3 04/10] arm64: its: Handle its command queue wrapping Date: Fri, 31 Jul 2020 15:42:38 +0800 Message-ID: <20200731074244.20432-5-wangjingyi11@huawei.com> X-Mailer: git-send-email 2.14.1.windows.1 In-Reply-To: <20200731074244.20432-1-wangjingyi11@huawei.com> References: <20200731074244.20432-1-wangjingyi11@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.42] X-CFilter-Loop: Reflected Cc: maz@kernel.org, prime.zeng@hisilicon.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Because micro-bench may send a large number of ITS commands, we should handle ITS command queue wrapping as kernel instead of just failing the test. Signed-off-by: Jingyi Wang Reviewed-by: Eric Auger --- lib/arm64/gic-v3-its-cmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/arm64/gic-v3-its-cmd.c b/lib/arm64/gic-v3-its-cmd.c index 2c208d1..34574f7 100644 --- a/lib/arm64/gic-v3-its-cmd.c +++ b/lib/arm64/gic-v3-its-cmd.c @@ -164,8 +164,9 @@ static struct its_cmd_block *its_allocate_entry(void) { struct its_cmd_block *cmd; - assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K); cmd = its_data.cmd_write++; + if ((u64)its_data.cmd_write == (u64)its_data.cmd_base + SZ_64K) + its_data.cmd_write = its_data.cmd_base; return cmd; } -- 2.19.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm