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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F88AC19F2D for ; Tue, 9 Aug 2022 09:33:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232302AbiHIJdg (ORCPT ); Tue, 9 Aug 2022 05:33:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbiHIJde (ORCPT ); Tue, 9 Aug 2022 05:33:34 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4EFD10F7 for ; Tue, 9 Aug 2022 02:33:32 -0700 (PDT) Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4M278W3cP5zjXWx; Tue, 9 Aug 2022 17:30:19 +0800 (CST) Received: from dggpemm500007.china.huawei.com (7.185.36.183) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Tue, 9 Aug 2022 17:33:29 +0800 Received: from huawei.com (10.175.103.91) by dggpemm500007.china.huawei.com (7.185.36.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Tue, 9 Aug 2022 17:33:29 +0800 From: Yang Yingliang To: , , CC: Subject: [PATCH] KVM: arm64: fix compile error because of shift overflow Date: Tue, 9 Aug 2022 17:41:58 +0800 Message-ID: <20220809094158.4080636-1-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500007.china.huawei.com (7.185.36.183) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change the mask to unsigned to fix the following fix compile error because of shift overflow when using low verison gcc(mine version is 7.5): In function ‘kvm_vm_ioctl_set_device_addr.isra.38’, inlined from ‘kvm_arch_vm_ioctl’ at arch/arm64/kvm/arm.c:1454:10: ././include/linux/compiler_types.h:354:38: error: call to ‘__compiletime_assert_599’ \ declared with attribute error: FIELD_GET: mask is not constant _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) Fixes: 9f968c9266aa ("KVM: arm64: vgic-v2: Add helper for legacy dist/cpuif base address setting") Signed-off-by: Yang Yingliang --- arch/arm64/include/uapi/asm/kvm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index 3bb134355874..04ffa13d5e0a 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -77,7 +77,7 @@ struct kvm_regs { #define KVM_ARM_DEVICE_TYPE_SHIFT 0 #define KVM_ARM_DEVICE_TYPE_MASK (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT) #define KVM_ARM_DEVICE_ID_SHIFT 16 -#define KVM_ARM_DEVICE_ID_MASK (0xffff << KVM_ARM_DEVICE_ID_SHIFT) +#define KVM_ARM_DEVICE_ID_MASK (0xffffu << KVM_ARM_DEVICE_ID_SHIFT) /* Supported device IDs */ #define KVM_ARM_DEVICE_VGIC_V2 0 -- 2.25.1