From nobody Mon Feb 9 16:52:52 2026 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=1607531723; cv=none; d=zohomail.com; s=zohoarc; b=O6HcaHXi07apaUONGcZAMyWWxnr2AzefpetIIWyvaoN+lxKy5Zpa81h1Bf+FpQN/kNGlvvhf488Jod1/RTynvX1bSSTeZmTXxWLwe7uKc3GtobQ73ZBrvgz1AYlsu+4yjmybbuDsZQqOzD+6cUD/ihTPByUYhyC3gNET6h8HjDw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1607531723; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=WMMjfDMhPo/exTPgOdiO8e3j5dI2Heb45s4KLaKYT/k=; b=IdlUm8UjHwTxHEyNfWN21CtGLX1wjSRCNZTi54mT8s5J5xiEv1v7wz9tOaYcFybibMpy9Cpm3hrHpnKg2F5bdnqzCy9qfEvvT8L9L8M6trx0b5u8KipApXm8qihpHA8N7fsWkMuqzMTOBfSnNgF/CdRsBw3LlLHrrbaQwMG18D4= 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 1607531723045569.5178718003222; Wed, 9 Dec 2020 08:35:23 -0800 (PST) Received: from list by lists.xenproject.org with outflank-mailman.48542.85910 (Exim 4.92) (envelope-from ) id 1kn2Qp-0007Tq-6b; Wed, 09 Dec 2020 16:35:11 +0000 Received: by outflank-mailman (output) from mailman id 48542.85910; Wed, 09 Dec 2020 16:35:11 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kn2Qp-0007Te-1F; Wed, 09 Dec 2020 16:35:11 +0000 Received: by outflank-mailman (input) for mailman id 48542; Wed, 09 Dec 2020 16:35:10 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kn2Qo-0007Fp-F9 for xen-devel@lists.xenproject.org; Wed, 09 Dec 2020 16:35:10 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id b4d68c8c-474d-45c1-be3a-5e462c638463; Wed, 09 Dec 2020 16:35:01 +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 108B31FB; Wed, 9 Dec 2020 08:35:01 -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 5FE4A3F68F; Wed, 9 Dec 2020 08:35:00 -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: b4d68c8c-474d-45c1-be3a-5e462c638463 From: Bertrand Marquis To: xen-devel@lists.xenproject.org Cc: Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v3 7/7] xen/arm: Activate TID3 in HCR_EL2 Date: Wed, 9 Dec 2020 16:31:00 +0000 Message-Id: <956cf336ffce24f0cabfc7a98ae855bc71d5f028.1607524536.git.bertrand.marquis@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Activate TID3 bit in HSR register when starting a guest. This will trap all coprecessor ID registers so that we can give to guest values corresponding to what they can actually use and mask some features to guests even though they would be supported by the underlying hardware (like SVE or MPAM). Signed-off-by: Bertrand Marquis Reviewed-by: Stefano Stabellini --- Changes in V2: Rebase Changes in V3: Rebase --- xen/arch/arm/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index 28d9d64558..c1a9ad6056 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -98,7 +98,7 @@ register_t get_default_hcr_flags(void) { return (HCR_PTW|HCR_BSU_INNER|HCR_AMO|HCR_IMO|HCR_FMO|HCR_VM| (vwfi !=3D NATIVE ? (HCR_TWI|HCR_TWE) : 0) | - HCR_TSC|HCR_TAC|HCR_SWIO|HCR_TIDCP|HCR_FB|HCR_TSW); + HCR_TID3|HCR_TSC|HCR_TAC|HCR_SWIO|HCR_TIDCP|HCR_FB|HCR_TSW); } =20 static enum { --=20 2.17.1