From patchwork Fri Jan 27 11:39:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 13118598 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 5B46CC54EAA for ; Fri, 27 Jan 2023 12:18:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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: List-Owner; bh=KRyGiae+wX736sLRHmRu0S1cQoKRu8ikc4nPpMq5vuE=; b=2F1xNYzZwY3VDa jl39ef9qHZUkdcOilFQ1PEbIlpPh1fb/Nc8+5a+g7cpMtr/IUdP8HMpeli3wyRhPnvEBG3M1ERpcT mrUF/5QipvMC7vR77Tr3j8rgcuSjf8t43m54bQFrpV0UI0H8keE71+NTq6hE1jAFACZzlkPsq3ES5 2oYU3plWmJFfnAJRGwjS39uM+D6GtUgPtvS4ltGZwXKrAZwX2aoGfAvBEyW4b5vv15WyuqMtSiok/ BC4xUymeNOKCgXtqG4yRksMtWW8FZHLMFXM9ENY+kdIlSnsAW3elOCAosZzK79URDRefHpRUukYSo KB+0uVKVdiLqWo29iSHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLNfn-00EUBx-6B; Fri, 27 Jan 2023 12:17:39 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLN6Z-00EDMN-AM for linux-arm-kernel@lists.infradead.org; Fri, 27 Jan 2023 11:41:16 +0000 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230127_034115_456493_CC5274B2 X-CRM114-Status: UNSURE ( 8.69 ) X-CRM114-Notice: Please train this message. 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 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"); }