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 18D77CD4F57 for ; Tue, 19 May 2026 10:02:37 +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-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cT9F7VO3Mh/HgtfFN9iVa+SKSz+PTsYe1tSp0B8YcnU=; b=duR9FDESxl0q99q5yRk5wZmqYP mOyO7mXw6OKDS/VwNTSPhKu5ZMwGZHafhNtI0kwK5rxbL0+TbF2DPrr9JLoXlTrq2toWEePloftjk cvFDLCIk0sEPjrxZEXnc2RMVqKX8Dtu0Tc/sB3QmIMg/mXgJ37CsLQSgT9yB8hVnB6tyGRWYj5aUU OPpig5BfRNd2VInZFi7BzA/g0n1+Cq9uJhzGtMI+g1ZYKA4YN1XPj0kRXtQgDy+yRD0WlX1664bU5 rZORZ4nL/XiZvkjczr2x7y6aq+yMuIV+5ECnyiHl0alXE/BCcHx9xTYvYUHP2gE2QX9R5l1I4Pldz j3SIdNQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPHHS-000000011kt-3iL5; Tue, 19 May 2026 10:02:30 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPHHR-000000011kc-3SBq for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2026 10:02:29 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id E675560126; Tue, 19 May 2026 10:02:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1BDF4C2BCB3; Tue, 19 May 2026 10:02:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779184948; bh=5CY+IUXkmbYVoZqzVuKhQ3pZoZ4Pk6BK8MnYzDSzr7E=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=FCjRvMHJals+Nn6CQNjvcIFda8xr7o7GvV7HXOOaPv+oBEkbfHumyHVdTzBWmzMJX 9y/9he4/VJ3Bs5eMQhEVcbDIlBmi+HBcoI12ORsQymuciY5S/osY3WzwQ2FjVbKMR5 oM9V8EMF6BOeoyf0r4MV0B3CNksvJqT0q3VjjYBO6unRdMEaVHsdWzBQ1sXpEEendH /U/O6if5goDue3gM21oIUeqmenUE3zkhzrsVLvLMYrqjbA2aeQ3ghJeTj416jFfesO pskTY1BS6PFCLAXcdtu6H6hIbMztjmp6g8bGSBXOKRVvrP+CEcVaojmEzKq/SZF/aD hdsusPyjxEdkg== X-Mailer: emacs 30.2 (via feedmail 11-beta-1 I) From: Aneesh Kumar K.V To: Steven Price , 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 , Emi Kisanuki , Vishal Annapurve , WeiLin.Chang@arm.com, Lorenzo.Pieralisi2@arm.com Subject: Re: [PATCH v14 27/44] arm64: RMI: Set RIPAS of initial memslots In-Reply-To: <20260513131757.116630-28-steven.price@arm.com> References: <20260513131757.116630-1-steven.price@arm.com> <20260513131757.116630-28-steven.price@arm.com> Date: Tue, 19 May 2026 15:32:16 +0530 Message-ID: MIME-Version: 1.0 Content-Type: text/plain 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 Steven Price writes: > 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 > --- ... > +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; relam guest already does. for_each_mem_range(i, &start, &end) { if (rsi_set_memory_range_protected_safe(start, end)) { panic("Failed to set memory range to protected: %pa-%pa", &start, &end); } } if so why is host required to do this ? -aneesh