From mboxrd@z Thu Jan 1 00:00:00 1970 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 E2FC2C88E7D for ; Tue, 15 Sep 2026 16:03:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2WDBMC6T5OU69YuDZBSthjHyEuiI9vRewBol9Gi8CBE=; b=lX4UNIDeKUasmaOQURc76Sf565 GRn7diBsZOGu4wAFMV30HlfZ9zRqWPolTIUvsmMoyv/g/kMwrrCrw6OnZewziAMR1oIyzt50HMz7e 45LQEKZtKuwMS8sH4T1mQzuMCR15EuU7bvsXeMLMp7gr7yRPJWSK+sDNFjtKC/UDGauEDs8itJCHu nVQo0fwpjpzIC5CBK2n+a1kUGexGfjEymBQ72ajSvnb0wtGk1EqrrKVoM3GU/DSSpeJ07j7pjVBP2 ZTvRDxFks7mZulgeS7pU8dIpFDf5e3NUW6unjYndXNyQyoXvJwaJrSe5vGcc9O0Zbj7PvKVY+SNbr BsDXoLhQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6Vch-00000007LqZ-0P1F; Tue, 15 Sep 2026 16:03:07 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x6VcN-00000007La2-2nH2 for linux-arm-kernel@lists.infradead.org; Tue, 15 Sep 2026 16:02:49 +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 7E7171570; Tue, 15 Sep 2026 09:02:43 -0700 (PDT) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.2.197.99]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5EC183F882; Tue, 15 Sep 2026 09:02:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1789488167; bh=CdQ3LU2C/wF8cnO0VzqHkPRgJxiUsivPTREctdi4DzQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eE9sFgm/9L4mffffTTMC8gBmxw71DbR2kDVTJKfwh7EENeaXUz+dYvUUEb20Luu5X yrpqVtxXU81Xw8+0FtB3uaoRB4YHKw4K1fQaCdwlWJqnhUDYsbOlNTTMVJ+B/4yVJo joV8DrrTQScwI5OjXpRq6VTQD8oKirbUkFGYqIXE= From: Suzuki K Poulose To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: maz@kernel.org, will@kernel.org, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, steven.price@arm.com, aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com, joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, sdonthineni@nvidia.com, alpergun@google.com, fj0570is@fujitsu.com, WeiLin.Chang@arm.com, lpieralisi@kernel.org, enju.kohei@fujitsu.com, Suzuki K Poulose Subject: [PATCH v18 18/23] KVM: arm64: CCA: Mandate VGIC_V3 for Realms Date: Tue, 15 Sep 2026 17:01:36 +0100 Message-ID: <20260915160141.3543048-19-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260915160141.3543048-1-suzuki.poulose@arm.com> References: <20260915160141.3543048-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260915_090247_766398_F935FE12 X-CRM114-Status: UNSURE ( 8.47 ) 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 RMM mandates that we use a VGIC v3 for a Realm and nothing else is supported. Mandate this in KVM. Signed-off-by: Suzuki K Poulose --- arch/arm64/kvm/vgic/vgic-init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c index 4012df6002ea6..452c085073f3e 100644 --- a/arch/arm64/kvm/vgic/vgic-init.c +++ b/arch/arm64/kvm/vgic/vgic-init.c @@ -84,6 +84,9 @@ int kvm_vgic_create(struct kvm *kvm, u32 type) !kvm_vgic_global_state.can_emulate_gicv2) return -ENODEV; + /* Realms only support VGIC_V3 */ + if (kvm_vm_is_realm(kvm) && type != KVM_DEV_TYPE_ARM_VGIC_V3) + return -ENODEV; /* * Ensure mutual exclusion with vCPU creation and any vCPU ioctls by: * -- 2.43.0