From nobody Tue Feb 10 06:59:02 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 Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1682316220825201.9170987206677; Sun, 23 Apr 2023 23:03:40 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.525070.816050 (Exim 4.92) (envelope-from ) id 1pqpI2-0001H4-6w; Mon, 24 Apr 2023 06:03:06 +0000 Received: by outflank-mailman (output) from mailman id 525070.816050; Mon, 24 Apr 2023 06:03:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pqpI2-0001Dm-0b; Mon, 24 Apr 2023 06:03:06 +0000 Received: by outflank-mailman (input) for mailman id 525070; Mon, 24 Apr 2023 06:03:04 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pqpI0-0000eR-U4 for xen-devel@lists.xenproject.org; Mon, 24 Apr 2023 06:03:04 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id acfa86d4-e265-11ed-b223-6b7b168915f2; Mon, 24 Apr 2023 08:03:04 +0200 (CEST) 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 8CF521684; Sun, 23 Apr 2023 23:03:47 -0700 (PDT) Received: from e125770.cambridge.arm.com (e125770.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C60BC3F587; Sun, 23 Apr 2023 23:03:02 -0700 (PDT) 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: acfa86d4-e265-11ed-b223-6b7b168915f2 From: Luca Fancellu To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, wei.chen@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v6 04/12] xen/arm: add SVE exception class handling Date: Mon, 24 Apr 2023 07:02:40 +0100 Message-Id: <20230424060248.1488859-5-luca.fancellu@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230424060248.1488859-1-luca.fancellu@arm.com> References: <20230424060248.1488859-1-luca.fancellu@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1682316222314100007 Content-Type: text/plain; charset="utf-8" SVE has a new exception class with code 0x19, introduce the new code and handle the exception. Signed-off-by: Luca Fancellu Reviewed-by: Bertrand Marquis Reviewed-by: Julien Grall --- Changes from v5: - modified error messages (Julien) - add R-by Bertrand Changes from v4: - No changes Changes from v3: - No changes Changes from v2: - No changes Changes from v1: - No changes Changes from RFC: - No changes --- xen/arch/arm/include/asm/processor.h | 1 + xen/arch/arm/traps.c | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/xen/arch/arm/include/asm/processor.h b/xen/arch/arm/include/as= m/processor.h index bc683334125c..7e42ff8811fc 100644 --- a/xen/arch/arm/include/asm/processor.h +++ b/xen/arch/arm/include/asm/processor.h @@ -426,6 +426,7 @@ #define HSR_EC_HVC64 0x16 #define HSR_EC_SMC64 0x17 #define HSR_EC_SYSREG 0x18 +#define HSR_EC_SVE 0x19 #endif #define HSR_EC_INSTR_ABORT_LOWER_EL 0x20 #define HSR_EC_INSTR_ABORT_CURR_EL 0x21 diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index c0611c2ef6a5..d672d2c694ef 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -2173,6 +2173,11 @@ void do_trap_guest_sync(struct cpu_user_regs *regs) perfc_incr(trap_sysreg); do_sysreg(regs, hsr); break; + case HSR_EC_SVE: + GUEST_BUG_ON(regs_mode_is_32bit(regs)); + gprintk(XENLOG_WARNING, "Domain tried to use SVE while not allowed= \n"); + inject_undef_exception(regs, hsr); + break; #endif =20 case HSR_EC_INSTR_ABORT_LOWER_EL: @@ -2202,6 +2207,10 @@ void do_trap_hyp_sync(struct cpu_user_regs *regs) case HSR_EC_BRK: do_trap_brk(regs, hsr); break; + case HSR_EC_SVE: + /* An SVE exception is a bug somewhere in hypervisor code */ + do_unexpected_trap("SVE trap at EL2", regs); + break; #endif case HSR_EC_DATA_ABORT_CURR_EL: case HSR_EC_INSTR_ABORT_CURR_EL: --=20 2.34.1