From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 46CC9330675; Wed, 13 May 2026 13:20:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778678448; cv=none; b=Nua/ejcvXGQ39YQYhkB7LG1AW2OxQZogXyAp5t2KKOS3qo6Ja9LfL2pLkne26IuqBvJHDhUIuPoJDNvpXbaASve4YuekHmSxR3LuqpzTZFWIFZ4x5VGOGHBStk6HISn1XsYIgkFUg58qtkI8nHgLoOS+S6xXNVoriWGwKTMKkDY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778678448; c=relaxed/simple; bh=Vo8ZmmZi5qqVTJlFrfGFu6ewMMpqqhjvVp3JgbePFdg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JCecKF1+VtqMTwegBpoI+/2Un980qQQnVidjFMDc52aQHN595MQugk95Nycllx4ZbEHX2BR1qSevJxndwhwpep8AoVj3LwKmxGNAqnHqCw/OFOC71xOk0eVUzfDgNGEB12suq2SZsTp4PnItOI0VIRaoMSYFJgVso2+axF866Ug= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Z5/QgpcF; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Z5/QgpcF" 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 8C6EE237B; Wed, 13 May 2026 06:20:41 -0700 (PDT) Received: from e122027.arm.com (unknown [10.57.68.187]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1DD0E3F836; Wed, 13 May 2026 06:20:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1778678446; bh=Vo8ZmmZi5qqVTJlFrfGFu6ewMMpqqhjvVp3JgbePFdg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z5/QgpcFW7FgiX1paj+VO63eddFA9QnHFt+pj2crYGhlUahbxsuC71ETSv3kobedr j61T7tiAyYM2b8XH3UE8YqNnq/7t+90T7AtFzGwFUKHVnqB7wyrHkRbxbjfl7V/HER M+3zDkNCPQiSVsLjsEFj8oJUt9ZPL9vJlLn/iPTo= 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 , WeiLin.Chang@arm.com, Lorenzo.Pieralisi2@arm.com Subject: [PATCH v14 27/44] arm64: RMI: Set RIPAS of initial memslots Date: Wed, 13 May 2026 14:17:35 +0100 Message-ID: <20260513131757.116630-28-steven.price@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260513131757.116630-1-steven.price@arm.com> References: <20260513131757.116630-1-steven.price@arm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 209087bcf399..fb96bcaa73ed 100644 --- a/arch/arm64/kvm/rmi.c +++ b/arch/arm64/kvm/rmi.c @@ -637,12 +637,44 @@ 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) { @@ -890,6 +922,10 @@ 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