From patchwork Tue Mar 25 14:19:00 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinqian Yang X-Patchwork-Id: 14029144 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 4584AC35FFC for ; Tue, 25 Mar 2025 15:23:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version: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:In-Reply-To:References:List-Owner; bh=IshwmIwF07+l4Q/ODrJJHd8a6G1zJziP0QCKvZ5VUzE=; b=CgrBnBntLHX2FnJlQL4JWwk+dy nE0G65y1fQ9pYZneprQD29xKve3Kos0gnqo2h0wusqKV5rMih5Jrsz79d9Oxkcz4a9fU+Qt18J6pB W1+Fvbdy24tAE8MWqccb4jKp0ly4rB2j6aUMOr2gbkuaUwEz34rrCZjJk5x5IcHeajadMEgSCg5+u R571uPOJQhZEWx/2ek4TZ+7ejYrmiyEYRCA77MnXmNIx44l/+ag/gfq5V0Gs9B+bKmMEuB0+hEysi Ts/26ZEhfaCJ6vSFvt7oGwS+ns7nIC36/yWSdyUF6SZ3PmJPY3scchvJfkO6A0bqbQ1sZP3W17jig aRClqf1g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1tx67v-00000006K92-1Qlz; Tue, 25 Mar 2025 15:23:39 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1tx57r-00000006BHL-0RIq for linux-arm-kernel@bombadil.infradead.org; Tue, 25 Mar 2025 14:19:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Content-Transfer-Encoding :MIME-Version:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To:Content-ID: Content-Description:In-Reply-To:References; bh=IshwmIwF07+l4Q/ODrJJHd8a6G1zJziP0QCKvZ5VUzE=; b=fhMcJ/Y1bSMlRDrlV1kVQfQtVp YQIlPNjlD01HohUi9DGhwv2RgCaUJimtWKjb94qUCpjl1G/f5erd9qfJnS3HKvD5ouSL+m0cuHyaX 0FKLGEgtdtpZZZ/5AFksoHhtUhXUfEl8CZnFFIoeZn6gBhG1zkLt84QQJCXziyTIT2jW8qJ6Ij5UH 1UJTkhNHsEE3f3sqG/PBHapJ+jyw83/HgrGcfbjx5mmpn/bo+xd8Jz+1jdXxfkvKz41wMRbGcuk54 osqbaJfN+CnkCVKxGmYYXj40taXnYVmZAuhQOXHhaD9eaATmuL44k1vJ+EwgRKbAlWU/R2NpdDRby Nw17+ydw==; Received: from szxga05-in.huawei.com ([45.249.212.191]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tx57n-00000005VF3-1eck for linux-arm-kernel@lists.infradead.org; Tue, 25 Mar 2025 14:19:29 +0000 Received: from mail.maildlp.com (unknown [172.19.88.163]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4ZMX3m4lHjz1jBLl; Tue, 25 Mar 2025 22:14:28 +0800 (CST) Received: from kwepemg100001.china.huawei.com (unknown [7.202.181.18]) by mail.maildlp.com (Postfix) with ESMTPS id C7E2F1800B1; Tue, 25 Mar 2025 22:19:06 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemg100001.china.huawei.com (7.202.181.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 25 Mar 2025 22:19:06 +0800 From: Jinqian Yang To: , , , , CC: , , , , , , , , Jinqian Yang Subject: [PATCH] arm64: Add support for HIP09 Spectre-BHB mitigation Date: Tue, 25 Mar 2025 22:19:00 +0800 Message-ID: <20250325141900.2057314-1-yangjinqian1@huawei.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 X-Originating-IP: [10.50.165.33] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemg100001.china.huawei.com (7.202.181.18) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250325_141927_982952_355D3D15 X-CRM114-Status: GOOD ( 10.15 ) 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 The HIP09 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This commit adds the MIDR of HIP09 to the list for software mitigation. Signed-off-by: Jinqian Yang --- arch/arm64/include/asm/cputype.h | 2 ++ arch/arm64/kernel/proton-pack.c | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h index 6f3f4142e214..363a9cbe780e 100644 --- a/arch/arm64/include/asm/cputype.h +++ b/arch/arm64/include/asm/cputype.h @@ -130,6 +130,7 @@ #define FUJITSU_CPU_PART_A64FX 0x001 #define HISI_CPU_PART_TSV110 0xD01 +#define HISI_CPU_PART_HIP09 0xD02 #define APPLE_CPU_PART_M1_ICESTORM 0x022 #define APPLE_CPU_PART_M1_FIRESTORM 0x023 @@ -204,6 +205,7 @@ #define MIDR_NVIDIA_CARMEL MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_CARMEL) #define MIDR_FUJITSU_A64FX MIDR_CPU_MODEL(ARM_CPU_IMP_FUJITSU, FUJITSU_CPU_PART_A64FX) #define MIDR_HISI_TSV110 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_TSV110) +#define MIDR_HISI_HIP09 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_HIP09) #define MIDR_APPLE_M1_ICESTORM MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_ICESTORM) #define MIDR_APPLE_M1_FIRESTORM MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_FIRESTORM) #define MIDR_APPLE_M1_ICESTORM_PRO MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_ICESTORM_PRO) diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index da53722f95d4..98bb7251a184 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -866,6 +866,7 @@ u8 spectre_bhb_loop_affected(int scope) MIDR_ALL_VERSIONS(MIDR_CORTEX_A76), MIDR_ALL_VERSIONS(MIDR_CORTEX_A77), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), + MIDR_ALL_VERSIONS(MIDR_HISI_HIP09), {}, }; static const struct midr_range spectre_bhb_k11_list[] = {