From patchwork Mon Mar 21 03:53:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 599962 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3qT2gB0fqlz9s5l for ; Mon, 21 Mar 2016 15:20:22 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b=hDopjlC2; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3qT2g96nngzDsTS for ; Mon, 21 Mar 2016 15:20:21 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b=hDopjlC2; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qT22s3sCQzDqDJ for ; Mon, 21 Mar 2016 14:52:21 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b=hDopjlC2; dkim-atps=neutral Received: by ozlabs.org (Postfix, from userid 1007) id 3qT22s2Dprz9t5S; Mon, 21 Mar 2016 14:52:18 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1458532341; bh=OyPbmcxHAVuUNPjhs8A/X1x9hKUEoAnTjQ0GPkIuaK4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hDopjlC2ptxxW/7EF1d7h08iyxo7ITKX4IviQHsDmoHO4qKiVH3ZqSsXMpKTFqcaj Vn8WAcwW2HlHbVNHSBuUDj5XxaMsdhSMRciZlEjXY6hAajQD7sarb9/NDo2E8wY6xd YpBy+xLDNsjBE++ouVJijPFyNq8l6bpRORGe0C6k= From: David Gibson To: paulus@samba.org, aik@ozlabs.ru, benh@kernel.crashing.org Subject: [RFCv3 17/17] powerpc/kvm: Advertise availablity of HPT resizing on KVM HV Date: Mon, 21 Mar 2016 14:53:24 +1100 Message-Id: <1458532404-21258-18-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1458532404-21258-1-git-send-email-david@gibson.dropbear.id.au> References: <1458532404-21258-1-git-send-email-david@gibson.dropbear.id.au> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: michael@ellerman.id.au, David Gibson , linuxppc-dev@lists.ozlabs.org, bharata@linux.vnet.ibm.com MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 900393b..1b59b23 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -588,7 +588,10 @@ 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 default: