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 EA1E243230D; Mon, 3 Aug 2026 13:46:28 +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=1785764790; cv=none; b=MCgj4H7Ns+cSEqItLTTqD05yAAEXiMLeR8BGq7EvfICoplc+f1+Owxrjp9LoJNQhnNzrkU7QZntlbUvfGT0iedDvCU/bK6GSYVZNliGI0Z+d/0h7WXbdekdHC93z6lHL3CsBY8ekvJPiUwGSo1sYX1IB5uspfV9M+MDSdc9getc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785764790; c=relaxed/simple; bh=W30500oBfBmJ6/xAl04uVtK46drltLrN652Rd4ULSFg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e5iCf6F74tWOWyg8Gpz1Fx7OJffJ4yK7sn3daGkOsabzOeZRGk9QhKwaIVB68K4WpMAXy8wCiujp3lHffxpFUumW+JMQIBlio7hW1Yza/thFCN8n0x/4faVohZoMFQB+4cn5/hpK8Zg/XScyKQSLA1CL0ygO45xu2DvpG7iHpdI= 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=d5xcZQy4; 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="d5xcZQy4" 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 661011476; Mon, 3 Aug 2026 06:46:24 -0700 (PDT) Received: from e122027.cambridge.arm.com (e122027.cambridge.arm.com [10.1.25.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 94A513F66F; Mon, 3 Aug 2026 06:46:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785764788; bh=W30500oBfBmJ6/xAl04uVtK46drltLrN652Rd4ULSFg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=d5xcZQy4139yVmA+Nhewrcaf6jL53MCaYkcke2saHsgyRXhcUeEM19vnEHK2ZqEHs MkUl9T8z39xWuDpxYv98F0LWDYyt8HG3KOjVEWXUrY4knAKm4Lq5MD/ppD99horeVo wGJA66zSUO0YMdnMaEtHcoDEvyh3VGNP8z5EYXLk= 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 Pieralisi Subject: [PATCH v16 28/45] KVM: arm64: CCA: Set RIPAS of initial memslots Date: Mon, 3 Aug 2026 14:43:44 +0100 Message-ID: <20260803134403.80630-29-steven.price@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260803134403.80630-1-steven.price@arm.com> References: <20260803134403.80630-1-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 | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/arch/arm64/kvm/rmi.c b/arch/arm64/kvm/rmi.c index d18c241f7eb2..4f362fd21477 100644 --- a/arch/arm64/kvm/rmi.c +++ b/arch/arm64/kvm/rmi.c @@ -779,6 +779,14 @@ 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) { lockdep_assert_held(&kvm->arch.config_lock); @@ -797,6 +805,32 @@ static int realm_ensure_created(struct kvm *kvm) return realm_create_rd(kvm); } +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; + + lockdep_assert_held(&kvm->arch.config_lock); + + 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) { @@ -1084,6 +1118,10 @@ 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