From patchwork Mon Mar 31 09:43:19 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 14033399 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 C132FC36010 for ; Mon, 31 Mar 2025 10:04:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=K0uyCRqysqwlz/M3gpeFQYnYDt/B6q6kuJ3jCKU26Zw=; b=NaJvx1xLGRoLGcpyxl0TszUFln N60z09VarufLlC+SvHEPKRE0VT8d9t55WYVITC8OgYve8CDKqL8lRNABZpJIZq8Lqb/qEcqFw6+4R 8AFLZqbk/r7vk2K8lE7lUeuHZA0WwCT7cYICfazQNJF/5zo0LKXVFWqDQ8O8MBGxWwN5QyN7WnjbQ afbtI6mU3T/zkBb/KB+iGX+U+zSALA3ducPY9nbqRIJwLh5DPlPBtE5akkj6NIMwhUHVtBp2AGosN lyLf0ki1Q5lqpaQeK55bPeuCVkjXs7BlKAHI3Oo/IxSSuSpra61+vQJiF9H2Zil6elNn/f0yBqGdJ NZXwX1LQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1tzC0G-0000000Hb57-2cZo; Mon, 31 Mar 2025 10:04:24 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1tzBfp-0000000HXqu-1fdI for linux-arm-kernel@lists.infradead.org; Mon, 31 Mar 2025 09:43:19 +0000 Received: from mail.maildlp.com (unknown [172.19.88.105]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4ZR5lR0hwTz13Kd0; Mon, 31 Mar 2025 17:42:43 +0800 (CST) Received: from kwepemd200014.china.huawei.com (unknown [7.221.188.8]) by mail.maildlp.com (Postfix) with ESMTPS id 44BA61400DC; Mon, 31 Mar 2025 17:43:12 +0800 (CST) Received: from localhost.localdomain (10.50.165.33) by kwepemd200014.china.huawei.com (7.221.188.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Mon, 31 Mar 2025 17:43:11 +0800 From: Yicong Yang To: , , , , , , , , CC: , , , , , , , , , , Subject: [PATCH v2 5/6] arm64: Add ESR.DFSC definition of unsupported exclusive or atomic access Date: Mon, 31 Mar 2025 17:43:19 +0800 Message-ID: <20250331094320.35226-6-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20250331094320.35226-1-yangyicong@huawei.com> References: <20250331094320.35226-1-yangyicong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.50.165.33] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemd200014.china.huawei.com (7.221.188.8) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250331_024317_623070_DBFE3573 X-CRM114-Status: GOOD ( 10.16 ) 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: Yicong Yang 0x35 indicates IMPLEMENTATION DEFINED fault for Unsupported Exclusive or Atomic access. Add ESR_ELx_FSC definition and corresponding wrapper. Signed-off-by: Yicong Yang --- arch/arm64/include/asm/esr.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h index d1b1a33f9a8b..2f357442f646 100644 --- a/arch/arm64/include/asm/esr.h +++ b/arch/arm64/include/asm/esr.h @@ -121,6 +121,7 @@ #define ESR_ELx_FSC_SEA_TTW(n) (0x14 + (n)) #define ESR_ELx_FSC_SECC (0x18) #define ESR_ELx_FSC_SECC_TTW(n) (0x1c + (n)) +#define ESR_ELx_FSC_EXCL_ATOMIC (0x35) /* Status codes for individual page table levels */ #define ESR_ELx_FSC_ACCESS_L(n) (ESR_ELx_FSC_ACCESS + (n)) @@ -464,6 +465,13 @@ static inline bool esr_fsc_is_access_flag_fault(unsigned long esr) (esr == ESR_ELx_FSC_ACCESS_L(0)); } +static inline bool esr_fsc_is_excl_atomic_fault(unsigned long esr) +{ + esr = esr & ESR_ELx_FSC; + + return esr == ESR_ELx_FSC_EXCL_ATOMIC; +} + /* Indicate whether ESR.EC==0x1A is for an ERETAx instruction */ static inline bool esr_iss_is_eretax(unsigned long esr) {