Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757379AbcLOF66 (ORCPT ); Thu, 15 Dec 2016 00:58:58 -0500 Received: from ozlabs.org ([103.22.144.67]:60455 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756770AbcLOF6z (ORCPT ); Thu, 15 Dec 2016 00:58:55 -0500 From: David Gibson To: paulus@samba.org Cc: michael@ellerman.id.au, benh@kernel.crashing.org, sjitindarsingh@gmail.com, thuth@redhat.com, lvivier@redhat.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, David Gibson Subject: [PATCH 11/11] powerpc/kvm: Advertise availablity of HPT resizing on KVM HV Date: Thu, 15 Dec 2016 16:54:04 +1100 Message-Id: <20161215055404.29351-12-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161215055404.29351-1-david@gibson.dropbear.id.au> References: <20161215055404.29351-1-david@gibson.dropbear.id.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 904 Lines: 28 This updates the KVM_CAP_SPAPR_RESIZE_HPT capability to advertise the presence of in-kernel HPT resizing on KVM HV. In fact the HPT resizing isn't fully implemented, but this allows us to experiment with what's there. Signed-off-by: David Gibson --- arch/powerpc/kvm/powerpc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index bb23923..965d26b 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -606,7 +606,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = 1; break; case KVM_CAP_SPAPR_RESIZE_HPT: - r = 1; /* resize allowed only if HPT is outside kernel */ + if (hv_enabled) + r = 2; /* In-kernel resize implementation */ + else + r = 1; /* outside kernel resize allowed */ break; #endif case KVM_CAP_PPC_HTM: -- 2.9.3