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 7CA94D65528 for ; Wed, 17 Dec 2025 10:13:43 +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=YhoHmiUMMcV+u1Taag1ucJ/LRhC45nAmnJRBOmm90u4=; b=sk44ZAFjt/zM5yXLHY5qs+lknI DXZrH5i6NKDX7Vha/ORzH8+2aWxzCFT//COfq4Si+mpyS2Ob3AZ2IMRnSTbNP29VFefClWP3631Z7 DITCvck/uBMwu5WSk+j7PlNnj1ikvcXit0uH1l/V4ecCd807E2zVxS1hGCB/wSDz6TOeqF5tIEKFz DTxoe3Nnq4Yv0f/KIWDsewGZ7ahNZI9v97AXD8zYNczDPvN7LP5PQOORWmcD53G705MzK1GPraQUN 4D9MlqdBCq4SGHdxChN5JB5VBBWGgg7TT6kdw++pWXYNX4a5eZTi9/KjGJxuhwjcPbXXbiMrRCy+V xrsrPoPg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVoXK-00000006XN9-1ucs; Wed, 17 Dec 2025 10:13:38 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVoXB-00000006WtJ-0jV5 for linux-arm-kernel@lists.infradead.org; Wed, 17 Dec 2025 10:13:34 +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 A4DB41688; Wed, 17 Dec 2025 02:13:21 -0800 (PST) Received: from e122027.arm.com (unknown [10.57.45.201]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 503283F73B; Wed, 17 Dec 2025 02:13:24 -0800 (PST) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Gavin Shan , Shanker Donthineni , Alper Gun , "Aneesh Kumar K . V" , Emi Kisanuki , Vishal Annapurve Subject: [PATCH v12 21/46] arm64: RMI: Set RIPAS of initial memslots Date: Wed, 17 Dec 2025 10:10:58 +0000 Message-ID: <20251217101125.91098-22-steven.price@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251217101125.91098-1-steven.price@arm.com> References: <20251217101125.91098-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251217_021329_316644_0D02AB7E X-CRM114-Status: GOOD ( 11.12 ) 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 The memory which the realm guest accesses must be set to RIPAS_RAM. Iterate over the memslots and set all gmem memslots to RIPAS_RAM. Signed-off-by: Steven Price --- New patch for v12. --- arch/arm64/kvm/rmi.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/arm64/kvm/rmi.c b/arch/arm64/kvm/rmi.c index 39577e956a59..b51e68e56d56 100644 --- a/arch/arm64/kvm/rmi.c +++ b/arch/arm64/kvm/rmi.c @@ -793,12 +793,44 @@ static int realm_set_ipa_state(struct kvm_vcpu *vcpu, return ret; } +static int realm_init_ipa_state(struct kvm *kvm, + unsigned long gfn, + unsigned long pages) +{ + return ripas_change(kvm, NULL, gfn_to_gpa(gfn), gfn_to_gpa(gfn + pages), + RIPAS_INIT, NULL); +} + static int realm_ensure_created(struct kvm *kvm) { /* Provided in later patch */ return -ENXIO; } +static int set_ripas_of_protected_regions(struct kvm *kvm) +{ + struct kvm_memslots *slots; + struct kvm_memory_slot *memslot; + int idx, bkt; + int ret = 0; + + idx = srcu_read_lock(&kvm->srcu); + + slots = kvm_memslots(kvm); + kvm_for_each_memslot(memslot, bkt, slots) { + if (!kvm_slot_has_gmem(memslot)) + continue; + + ret = realm_init_ipa_state(kvm, memslot->base_gfn, + memslot->npages); + if (ret) + break; + } + srcu_read_unlock(&kvm->srcu, idx); + + return ret; +} + int kvm_arm_rmi_populate(struct kvm *kvm, struct kvm_arm_rmi_populate *args) { @@ -1119,6 +1151,10 @@ int kvm_activate_realm(struct kvm *kvm) return ret; } + ret = set_ripas_of_protected_regions(kvm); + if (ret) + return ret; + ret = rmi_realm_activate(virt_to_phys(realm->rd)); if (ret) return -ENXIO; -- 2.43.0