From nobody Mon Apr 29 03:21:28 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=arm.com ARC-Seal: i=1; a=rsa-sha256; t=1606216381; cv=none; d=zohomail.com; s=zohoarc; b=bTGXFituCgLBGA4SKlQSyjQdDYznW5xZyyCwJ8ND3R2hDuz4UMRVZhUA2f/a0A4VNGo0qYInDKOQwg9ljsVtteam6PQL+a/rm/ZUo79aNSFxoDqu0m8JT/l7tC4CprpwFfcLcFHP6medeeIpvJyo8i9qcL9J2KeBOToTFeb3FNM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1606216381; h=Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:Message-ID:Sender:Subject:To; bh=Sp2/8nQPWwZVpwztoG1L3LVXyerTMBu6vM02U4ATp28=; b=la+zVLGnFZyecGCK2pa4GIaMaB6mEv4H/meHnsqQ2QmfsbfLbp5KPU9+FZIQ2uVJAeIh0k/HW3a+k0F1vH3uq8oJyb1U8KlTrzwbcu3eyUIiTEAPcau7yvGmH6KK0QmVaCLrs1MI4yOr2GkHw3J2jwST/726XY2E+AmSYNAHuyY= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1606216381778166.21343338727672; Tue, 24 Nov 2020 03:13:01 -0800 (PST) Received: from list by lists.xenproject.org with outflank-mailman.35767.67405 (Exim 4.92) (envelope-from ) id 1khWFW-0003P0-U7; Tue, 24 Nov 2020 11:12:42 +0000 Received: by outflank-mailman (output) from mailman id 35767.67405; Tue, 24 Nov 2020 11:12:42 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khWFW-0003Ot-QF; Tue, 24 Nov 2020 11:12:42 +0000 Received: by outflank-mailman (input) for mailman id 35767; Tue, 24 Nov 2020 11:12:41 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khWFV-0003Oo-Sn for xen-devel@lists.xenproject.org; Tue, 24 Nov 2020 11:12:41 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 8476b3c8-252c-416f-b1ad-4d35d64ba8c2; Tue, 24 Nov 2020 11:12:40 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 968561396; Tue, 24 Nov 2020 03:12:39 -0800 (PST) Received: from e109506-lin.cambridge.arm.com (e109506-lin.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E4F243F71F; Tue, 24 Nov 2020 03:12:38 -0800 (PST) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1khWFV-0003Oo-Sn for xen-devel@lists.xenproject.org; Tue, 24 Nov 2020 11:12:41 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 8476b3c8-252c-416f-b1ad-4d35d64ba8c2; Tue, 24 Nov 2020 11:12:40 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 968561396; Tue, 24 Nov 2020 03:12:39 -0800 (PST) Received: from e109506-lin.cambridge.arm.com (e109506-lin.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E4F243F71F; Tue, 24 Nov 2020 03:12:38 -0800 (PST) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 8476b3c8-252c-416f-b1ad-4d35d64ba8c2 From: Bertrand Marquis To: xen-devel@lists.xenproject.org Cc: Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH] xen/arm: Add workaround for Cortex-A55 erratum #1530923 Date: Tue, 24 Nov 2020 11:12:15 +0000 Message-Id: <61a105672650e7470710183f37351b821b818d1e.1606215998.git.bertrand.marquis@arm.com> X-Mailer: git-send-email 2.17.1 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" On the Cortex A55, TLB entries can be allocated by a speculative AT instruction. If this is happening during a guest context switch with an inconsistent page table state in the guest, TLBs with wrong values might be allocated. The ARM64_WORKAROUND_AT_SPECULATE workaround is used as for erratum 1165522 on Cortex A76 or Neoverse N1. This change is also introducing the MIDR identifier for the Cortex-A55. Signed-off-by: Bertrand Marquis Acked-by: Julien Grall Reviewed-by: Rahul Singh Reviewed-by: Stefano Stabellini --- docs/misc/arm/silicon-errata.txt | 1 + xen/arch/arm/cpuerrata.c | 6 ++++++ xen/include/asm-arm/processor.h | 2 ++ 3 files changed, 9 insertions(+) diff --git a/docs/misc/arm/silicon-errata.txt b/docs/misc/arm/silicon-errat= a.txt index d183ba543f..27bf957ebf 100644 --- a/docs/misc/arm/silicon-errata.txt +++ b/docs/misc/arm/silicon-errata.txt @@ -45,6 +45,7 @@ stable hypervisors. | ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_82731= 9 | | ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_82406= 9 | | ARM | Cortex-A53 | #819472 | ARM64_ERRATUM_81947= 2 | +| ARM | Cortex-A55 | #1530923 | N/A = | | ARM | Cortex-A57 | #852523 | N/A = | | ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_83207= 5 | | ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_83422= 0 | diff --git a/xen/arch/arm/cpuerrata.c b/xen/arch/arm/cpuerrata.c index cb4795beec..b398d480f1 100644 --- a/xen/arch/arm/cpuerrata.c +++ b/xen/arch/arm/cpuerrata.c @@ -514,6 +514,12 @@ static const struct arm_cpu_capabilities arm_errata[] = =3D { .capability =3D ARM64_WORKAROUND_AT_SPECULATE, MIDR_ALL_VERSIONS(MIDR_CORTEX_A57), }, + { + /* Cortex-A55 (All versions as erratum is open in SDEN v14) */ + .desc =3D "ARM erratum 1530923", + .capability =3D ARM64_WORKAROUND_AT_SPECULATE, + MIDR_ALL_VERSIONS(MIDR_CORTEX_A55), + }, {}, }; =20 diff --git a/xen/include/asm-arm/processor.h b/xen/include/asm-arm/processo= r.h index d3d12a9d19..87c8136022 100644 --- a/xen/include/asm-arm/processor.h +++ b/xen/include/asm-arm/processor.h @@ -53,6 +53,7 @@ #define ARM_CPU_PART_CORTEX_A17 0xC0E #define ARM_CPU_PART_CORTEX_A15 0xC0F #define ARM_CPU_PART_CORTEX_A53 0xD03 +#define ARM_CPU_PART_CORTEX_A55 0xD05 #define ARM_CPU_PART_CORTEX_A57 0xD07 #define ARM_CPU_PART_CORTEX_A72 0xD08 #define ARM_CPU_PART_CORTEX_A73 0xD09 @@ -64,6 +65,7 @@ #define MIDR_CORTEX_A17 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A17) #define MIDR_CORTEX_A15 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A15) #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A53) +#define MIDR_CORTEX_A55 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A55) #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A57) #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A72) #define MIDR_CORTEX_A73 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTE= X_A73) --=20 2.17.1