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[2620:137:e000::1:20]) by mx.google.com with ESMTP id x24-20020aa79418000000b0058a4a6b6cbbsi4080062pfo.126.2023.01.27.03.46.49; Fri, 27 Jan 2023 03:47:01 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232068AbjA0LnD (ORCPT + 99 others); Fri, 27 Jan 2023 06:43:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233930AbjA0LmB (ORCPT ); Fri, 27 Jan 2023 06:42:01 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B2C177C31A; Fri, 27 Jan 2023 03:41:30 -0800 (PST) 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 A914E1691; Fri, 27 Jan 2023 03:41:56 -0800 (PST) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 08A9B3F64C; Fri, 27 Jan 2023 03:41:11 -0800 (PST) From: Suzuki K Poulose To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: suzuki.poulose@arm.com, Alexandru Elisei , Andrew Jones , Christoffer Dall , Fuad Tabba , Jean-Philippe Brucker , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , linux-coco@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly Subject: [RFC kvmtool 30/31] arm64: realm: inject an abort on an unhandled MMIO access Date: Fri, 27 Jan 2023 11:39:31 +0000 Message-Id: <20230127113932.166089-31-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127113932.166089-1-suzuki.poulose@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127113932.166089-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756176079469495723?= X-GMAIL-MSGID: =?utf-8?q?1756176079469495723?= From: Joey Gouly For Realms, inject a synchronous external abort, instead of ignoring unknown MMIO accesses. Signed-off-by: Joey Gouly Signed-off-by: Suzuki K Poulose --- arm/kvm-cpu.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arm/kvm-cpu.c b/arm/kvm-cpu.c index 90a15ae9..c96d75eb 100644 --- a/arm/kvm-cpu.c +++ b/arm/kvm-cpu.c @@ -155,4 +155,13 @@ void kvm_cpu__show_page_tables(struct kvm_cpu *vcpu) void kvm_cpu__arch_unhandled_mmio(struct kvm_cpu *vcpu) { + struct kvm_vcpu_events events = { }; + + if (!vcpu->kvm->cfg.arch.is_realm) + return; + + events.exception.ext_dabt_pending = 1; + + if (ioctl(vcpu->vcpu_fd, KVM_SET_VCPU_EVENTS, &events) < 0) + die_perror("KVM_SET_VCPU_EVENTS failed"); }