From patchwork Tue Jul 16 16:26:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 13734689 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 75D96C3DA59 for ; Tue, 16 Jul 2024 16:29:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTl2M-00021D-6B; Tue, 16 Jul 2024 12:28:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTl1J-0006VV-K0; Tue, 16 Jul 2024 12:27:19 -0400 Received: from mail-oa1-x32.google.com ([2001:4860:4864:20::32]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sTl1F-0006bt-RL; Tue, 16 Jul 2024 12:27:16 -0400 Received: by mail-oa1-x32.google.com with SMTP id 586e51a60fabf-25e134abf00so2810986fac.1; Tue, 16 Jul 2024 09:27:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1721147230; x=1721752030; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=RNZWaeAaQd+FgPrD7L1WMdXukzJbPCdt43L1w3ipbZg=; b=mE71lWa1v1qDE/6ErfLgBoIRWJs9b8rb2OMtKuUiO0Xx3TegYRuy6zUPDSoL+zVgL3 tkL4ROMzKlGPN9Ga+NfLbnP2AyTHAxtkQ+egjBuF7AIFqsZSdwUgISihnpA0sR9JvRbI 1yn6MAPG1ichwo0WK1P6/qg0GuVY2MZfI5xwETqycvC65gBSJNHdpZvvJcuE6464g/hE +hnJlv0QY6tGDt7C1PxuG6aAkD8Y0ARa/gPC9KJt/sD8nsy95G4uTocp0lKgZoFERLoQ Nylv430tdWhJP5b18FpxYvcbmhAWiJuEe+Y6AfUKdBYLTQ/qonMc7ysPU0qEU2k3FIbj znAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721147230; x=1721752030; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RNZWaeAaQd+FgPrD7L1WMdXukzJbPCdt43L1w3ipbZg=; b=wXM0yXuD3V/VJtzZmXEy8qq4F/p0rf76oazzPsBpCzZnw9iQwm5K9/XZTDrHioTDeq /pAoxaKlt2o2rp4EDzuj6tfN5orp+ccw7OuuQiQPVVZNRYOJn77v/u8m8gXF7CoM9TIA ukv02RheXyM3GSQgbUpVJNjM2awo9Kc0KJolzWAgLbE6B36OzaLAe2pt4CYqIcKPJp4V 388sS5L+nMIU4OYb+2H9YXRkhRXKmC2P4JDb91bCf2Dcbdp5nbAnIEHjLTAC0OsryMGz lOVZjE8XdEt92Ar09/idDbNnK7UWwe4nKhs9ico0TLUYMUHbHh/DRaKROznda5ISQL+M 1EHw== X-Forwarded-Encrypted: i=1; AJvYcCUVBCzZ2zSFjmN9piSosrsSZGwj7DOVt2ZcjRDcMP3z9uJTls1ikW0FImLUht7KbXqu9jkbqhvQlsSr3vEuJUnps06P35E= X-Gm-Message-State: AOJu0Yzu1ef3tH3+iCtVW9atZYMcnYFiuf5smVCvxT+M91clWmR8FolA mGboFvNj3CgNAXgf5L0kAH16J0OSIRV8bP4jWa7b39VGjvIdJD7j6KBOZA== X-Google-Smtp-Source: AGHT+IEyiUUhnKUIXWWM3ddqsHvRndyuL9HtRyw0F+VlNDRYkFMvZgafga3Tg50dngvSzIuvG/1Pwg== X-Received: by 2002:a05:6870:6489:b0:23d:a1d0:7334 with SMTP id 586e51a60fabf-260bd5bdb07mr2051825fac.17.1721147230428; Tue, 16 Jul 2024 09:27:10 -0700 (PDT) Received: from wheely.local0.net ([203.220.44.216]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b7eca86d6sm6722161b3a.179.2024.07.16.09.27.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jul 2024 09:27:10 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , =?utf-8?q?C=C3=A9dric_Le_Goater?= , =?utf-8?b?RnLDqWTDqXJp?= =?utf-8?b?YyBCYXJyYXQ=?= , Harsh Prateek Bora , qemu-devel@nongnu.org, =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PATCH v3 12/19] ppc/pnv: Implement big-core PVR for Power9/10 Date: Wed, 17 Jul 2024 02:26:08 +1000 Message-ID: <20240716162617.32161-13-npiggin@gmail.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240716162617.32161-1-npiggin@gmail.com> References: <20240716162617.32161-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2001:4860:4864:20::32; envelope-from=npiggin@gmail.com; helo=mail-oa1-x32.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Power9/10 CPUs have PVR[51] set in small-core mode and clear in big-core mode. This is used by skiboot firmware. PVR is not hypervisor-privileged but it is not so important that spapr to implement this because it's generally masked out of PVR matching code in kernels, and only used by firmware. Reviewed-by: Cédric Le Goater Signed-off-by: Nicholas Piggin --- hw/ppc/pnv_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index 6dc05534d7..43cfeaa2d4 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -58,6 +58,10 @@ static void pnv_core_cpu_reset(PnvCore *pc, PowerPCCPU *cpu) env->nip = 0x10; env->msr |= MSR_HVB; /* Hypervisor mode */ env->spr[SPR_HRMOR] = pc->hrmor; + if (pc->big_core) { + /* Clear "small core" bit on Power9/10 (this is set in default PVR) */ + env->spr[SPR_PVR] &= ~PPC_BIT(51); + } hreg_compute_hflags(env); ppc_maybe_interrupt(env);