From patchwork Wed Dec 22 13:08:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Leizhen (ThunderTown)" X-Patchwork-Id: 12697096 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A6750C433F5 for ; Wed, 22 Dec 2021 13:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+eiTwzX//JWqgSVFcwQt2Mv1LoYXZ769nQqtu0N6osE=; b=x0XFoL9k6Si9mQ 9AuJjuDTfew/++l/myu5CtB9Mzvb+E8CoKyXEanKYQl0tZ0PqcrxyEO0fMWPtgema0KSB8nBdhd8c peTfk0JgwtYsrXRh5MDLycgxSi8EAbY5vI8gJZm1u+9N1OkaMnjLUP6AGVfRz933OHz0Tt0QZveh4 icZweRHox42qDaGz+7roGYBOQ4VOGMtFikrK40IdRRFPENRQCc8mbh3tE8aYYb6fkQirpoy2a/kyq E+ynj4raSST8tWNkngqbXOiw77dPNeOaKU8tsbqOngdruF6m2i0u4J3pxkfEt+HaBzTm/KK7kd83z z1gKkFV0IFWgIdd7Ruag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n01Ue-00ARyA-2N; Wed, 22 Dec 2021 13:17:20 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n01Py-00API6-Vn; Wed, 22 Dec 2021 13:12:34 +0000 Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4JJtyY65N5zcbxj; Wed, 22 Dec 2021 21:12:05 +0800 (CST) Received: from dggpemm500006.china.huawei.com (7.185.36.236) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Wed, 22 Dec 2021 21:12:25 +0800 Received: from thunder-town.china.huawei.com (10.174.178.55) by dggpemm500006.china.huawei.com (7.185.36.236) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Wed, 22 Dec 2021 21:12:24 +0800 From: Zhen Lei To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , , "H . Peter Anvin" , , Dave Young , Baoquan He , Vivek Goyal , Eric Biederman , , Catalin Marinas , "Will Deacon" , , Rob Herring , Frank Rowand , , Jonathan Corbet , CC: Zhen Lei , Randy Dunlap , Feng Zhou , Kefeng Wang , Chen Zhou , "John Donnelly" Subject: [PATCH v18 07/17] x86/setup: Eliminate a magic number in reserve_crashkernel() Date: Wed, 22 Dec 2021 21:08:10 +0800 Message-ID: <20211222130820.1754-8-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 In-Reply-To: <20211222130820.1754-1-thunder.leizhen@huawei.com> References: <20211222130820.1754-1-thunder.leizhen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.178.55] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500006.china.huawei.com (7.185.36.236) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211222_051231_272022_E8102D41 X-CRM114-Status: GOOD ( 12.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Chen Zhou Replace '(1ULL << 32)' with CRASH_ADDR_LOW_MAX to improve readability, they are equal. Signed-off-by: Chen Zhou Signed-off-by: Zhen Lei --- arch/x86/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 52aa925877ca787..abff57ffbe92884 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -523,7 +523,7 @@ static void __init reserve_crashkernel(void) } #ifdef CONFIG_X86_64 - if (crash_base >= (1ULL << 32)) { + if (crash_base >= CRASH_ADDR_LOW_MAX) { /* * Ensure that at least 256M extra low memory is allocated for * DMA buffers and swiotlb, if low memory size is not specified.