From nobody Mon Feb 9 17:37:33 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1552385847263942.6864427310384; Tue, 12 Mar 2019 03:17:27 -0700 (PDT) Received: from localhost ([127.0.0.1]:48941 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3eTL-0005ty-3G for importer@patchew.org; Tue, 12 Mar 2019 06:17:23 -0400 Received: from eggs.gnu.org ([209.51.188.92]:52436) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3dTu-0007dG-JX for qemu-devel@nongnu.org; Tue, 12 Mar 2019 05:13:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h3dJ9-0007Q0-Uq for qemu-devel@nongnu.org; Tue, 12 Mar 2019 05:02:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38302) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h3dJ6-0007NY-2e; Tue, 12 Mar 2019 05:02:45 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E7A3981DF5; Tue, 12 Mar 2019 08:54:31 +0000 (UTC) Received: from umbus.redhat.com (vpn2-54-33.bne.redhat.com [10.64.54.33]) by smtp.corp.redhat.com (Postfix) with ESMTP id 556886013E; Tue, 12 Mar 2019 08:54:28 +0000 (UTC) From: David Gibson To: peter.maydell@linaro.org Date: Tue, 12 Mar 2019 19:52:33 +1100 Message-Id: <20190312085316.8054-20-dgibson@redhat.com> In-Reply-To: <20190312085316.8054-1-dgibson@redhat.com> References: <20190312085316.8054-1-dgibson@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Tue, 12 Mar 2019 08:54:32 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 19/62] target/ppc/spapr: Enable H_PAGE_INIT in-kernel handling X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, clg@kaod.org, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, groug@kaod.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Suraj Jitindar Singh The H_CALL H_PAGE_INIT can be used to zero or copy a page of guest memory. Enable the in-kernel H_PAGE_INIT handler. The in-kernel handler takes half the time to complete compared to handling the H_CALL in userspace. Signed-off-by: Suraj Jitindar Singh Message-Id: <20190306060608.19935-1-sjitindarsingh@gmail.com> Signed-off-by: David Gibson --- hw/ppc/spapr.c | 3 +++ target/ppc/kvm.c | 5 +++++ target/ppc/kvm_ppc.h | 5 +++++ 3 files changed, 13 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 755056875c..e764e89806 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -2822,6 +2822,9 @@ static void spapr_machine_init(MachineState *machine) =20 /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ kvmppc_enable_clear_ref_mod_hcalls(); + + /* Enable H_PAGE_INIT */ + kvmppc_enable_h_page_init(); } =20 /* allocate RAM */ diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 4a79a75f63..1c0a586ea8 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -2044,6 +2044,11 @@ void kvmppc_enable_clear_ref_mod_hcalls(void) kvmppc_enable_hcall(kvm_state, H_CLEAR_MOD); } =20 +void kvmppc_enable_h_page_init(void) +{ + kvmppc_enable_hcall(kvm_state, H_PAGE_INIT); +} + void kvmppc_set_papr(PowerPCCPU *cpu) { CPUState *cs =3D CPU(cpu); diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h index 2937b36cae..2c2ea30e87 100644 --- a/target/ppc/kvm_ppc.h +++ b/target/ppc/kvm_ppc.h @@ -23,6 +23,7 @@ int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int le= vel); void kvmppc_enable_logical_ci_hcalls(void); void kvmppc_enable_set_mode_hcall(void); void kvmppc_enable_clear_ref_mod_hcalls(void); +void kvmppc_enable_h_page_init(void); void kvmppc_set_papr(PowerPCCPU *cpu); int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr); void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy); @@ -138,6 +139,10 @@ static inline void kvmppc_enable_clear_ref_mod_hcalls(= void) { } =20 +static inline void kvmppc_enable_h_page_init(void) +{ +} + static inline void kvmppc_set_papr(PowerPCCPU *cpu) { } --=20 2.20.1