From nobody Wed Feb 11 02:07:42 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1502262373274270.76691120684984; Wed, 9 Aug 2017 00:06:13 -0700 (PDT) Received: from localhost ([::1]:46006 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dfL4G-0007x9-21 for importer@patchew.org; Wed, 09 Aug 2017 03:06:12 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46686) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dfL2V-0006Di-HJ for qemu-devel@nongnu.org; Wed, 09 Aug 2017 03:04:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dfL2S-0003zE-Dw for qemu-devel@nongnu.org; Wed, 09 Aug 2017 03:04:23 -0400 Received: from ozlabs.org ([103.22.144.67]:34419) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dfL2S-0003xN-29; Wed, 09 Aug 2017 03:04:20 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 3xS2Lh1pZ3z9sRg; Wed, 9 Aug 2017 17:04:11 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1502262252; bh=fvGg4oyjgnavIU6mcEW9SNZZJpm+7MwZ4O8Xw2AZovw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H5kAacQ8+TtN4UbC3PX+qjWMCsrR8pJkjdQ7yNE+UE01+/YW3kN600irVuOoIN/DS EPjMkY/U8mv2vNuRmqTVSMFPxyqJycOaaH5fy1P0G8s/rgYM1izVd4pwnMwBPiX4CQ YFrCQWxoQgWhlZzNIyj89E8RxZx+JXEGnEjaFtDg= From: David Gibson To: peter.maydell@linaro.org Date: Wed, 9 Aug 2017 17:03:55 +1000 Message-Id: <20170809070357.28723-5-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.13.4 In-Reply-To: <20170809070357.28723-1-david@gibson.dropbear.id.au> References: <20170809070357.28723-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 103.22.144.67 Subject: [Qemu-devel] [PULL 4/6] target/ppc: Add stub implementation of the PSSCR 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: aik@ozlabs.ru, qemu-devel@nongnu.org, agraf@suse.de, groug@kaod.org, qemu-ppc@nongnu.org, David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" The PSSCR register added in POWER9 controls certain power saving mode behaviours. Mostly, it's not relevant to TCG, however because qemu doesn't know about it yet, it doesn't synchronize the state with KVM, and thus it doesn't get migrated. To fix that, this adds a minimal stub implementation of the register. This isn't complete, even to the extent that an implementation is possible in TCG, just enough to get migration working. We need to come back later and at least properly filter the various fields in the register based on privilege level. Signed-off-by: David Gibson Reviewed-by: C=C3=A9dric Le Goater Reviewed-by: Greg Kurz Reviewed-by: Thomas Huth --- target/ppc/cpu.h | 1 + target/ppc/translate_init.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index f6e5413fad..46d3dd88f6 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -1771,6 +1771,7 @@ void ppc_compat_add_property(Object *obj, const char = *name, #define SPR_IC (0x350) #define SPR_VTB (0x351) #define SPR_MMCRC (0x353) +#define SPR_PSSCR (0x357) #define SPR_440_INV0 (0x370) #define SPR_440_INV1 (0x371) #define SPR_440_INV2 (0x372) diff --git a/target/ppc/translate_init.c b/target/ppc/translate_init.c index 94800cd29d..8fb407ed73 100644 --- a/target/ppc/translate_init.c +++ b/target/ppc/translate_init.c @@ -8846,6 +8846,11 @@ static void init_proc_POWER9(CPUPPCState *env) spr_read_generic, spr_write_generic, KVM_REG_PPC_TIDR, 0); =20 + /* FIXME: Filter fields properly based on privilege level */ + spr_register_kvm_hv(env, SPR_PSSCR, "PSSCR", NULL, NULL, NULL, NULL, + spr_read_generic, spr_write_generic, + KVM_REG_PPC_PSSCR, 0); + /* env variables */ #if !defined(CONFIG_USER_ONLY) env->slb_nr =3D 32; --=20 2.13.4