From mboxrd@z Thu Jan 1 00:00:00 1970 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 2BA36C433FE for ; Mon, 17 Oct 2022 19:35:16 +0000 (UTC) Received: from localhost ([::1]:59298 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1okVtK-0000MC-Dr for qemu-devel@archiver.kernel.org; Mon, 17 Oct 2022 15:35:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34200) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1okVgV-0004v9-LZ; Mon, 17 Oct 2022 15:22:02 -0400 Received: from mail-oa1-x32.google.com ([2001:4860:4864:20::32]:36825) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1okVgT-00033t-CR; Mon, 17 Oct 2022 15:21:58 -0400 Received: by mail-oa1-x32.google.com with SMTP id 586e51a60fabf-136b5dd6655so14417780fac.3; Mon, 17 Oct 2022 12:21:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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=aT3WPPjxMZjXCOZjcHpYoYx3tnrOwGNLqWOQmP0vItg=; b=QoSKS05b4AZfA4Ihip/aIN5TnkkMtYDBOg75UcX8Ed2vq70RkyNvqyeXI+8Hsbhwmj frowyxv9zT00y7tFNj/+TIOyOq4yV4SWxL7dVqSvDEU7AnLvpBqhZciNosJRCddzp8Rw RCvcXNaddNqIR2aEna6fM5seyLRgadaDFd//UUmbAI4NZ/Kfe0Wmfff5zK7qD2EZrv/V 6FYOiRtkgCtO8C+AJyjBZyNnQKQisBIfqLb7ieYUDA1y14EQxnzhOk18soPbPjGGsQap hKa8Z0MQbAKJ7T+79VO0Bpe7I+at7R44zqrhlqDTXlEC84qUpNWl5LPQQCeum3zY5L2J IM3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=aT3WPPjxMZjXCOZjcHpYoYx3tnrOwGNLqWOQmP0vItg=; b=mGQ8vQGipWmlPIzz4hZFcRq6D3XChqGakMumGlrtgy3KebnSIUxcs/YjS5DsSWsMNr kfmNdm5SYuiQcmRgPsUiBfYOSZ2WUP+/Eywb3Cvw/3M7nNyTxRfzVMzZ2bxW+x6v/FXu nl7qndXbp0JSM0gvhHau3ao9M65nQOTv5KwYAxARIsNZuziZrE0BR6i51U+UGdvd8BL2 gxg/Fe/xRYbH8+r1p07qpHNmMCYWIBLJts8erTq1ttbWwZm1AjSykT4RDbtmeT1r8DRK 3YTENaVxZOtN1nhgLXqw49HJ5W/8xJ6ptVVkEpRdxyZx8+MZFpS/MpcTMw1aPkgJuLWU tirA== X-Gm-Message-State: ACrzQf2kYQTOEqC6/SjGR+DN8t55yAEgnjjvmbUOz4AkBQGtgvyCyPHs GteDVpaAWhUzaBJoEkHemPhsfR1dB+o= X-Google-Smtp-Source: AMsMyM5LGoz9esGrJAFw58RhodbMCPNUuC3YxUYGZssv/+7mgIg6VjVWWpAAI02Q68jT+mMxTnIk+A== X-Received: by 2002:a05:6870:3388:b0:136:4f44:78a6 with SMTP id w8-20020a056870338800b001364f4478a6mr16770206oae.125.1666034515407; Mon, 17 Oct 2022 12:21:55 -0700 (PDT) Received: from balboa.COMFAST ([179.111.38.2]) by smtp.gmail.com with ESMTPSA id n132-20020aca408a000000b00342eade43d4sm4648005oia.13.2022.10.17.12.21.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Oct 2022 12:21:55 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, stefanha@redhat.com, Daniel Henrique Barboza , David Gibson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 36/38] hw/ppc: set machine->fdt in spapr machine Date: Mon, 17 Oct 2022 16:20:07 -0300 Message-Id: <20221017192009.92404-37-danielhb413@gmail.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221017192009.92404-1-danielhb413@gmail.com> References: <20221017192009.92404-1-danielhb413@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2001:4860:4864:20::32; envelope-from=danielhb413@gmail.com; helo=mail-oa1-x32.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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_ENVFROM_END_DIGIT=0.25, 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" The pSeries machine never bothered with the common machine->fdt attribute. We do all the FDT related work using spapr->fdt_blob. We're going to introduce a QMP/HMP command to dump the FDT, which will rely on setting machine->fdt properly to work across all machine archs/types. Let's set machine->fdt in two places where we manipulate the FDT: spapr_machine_reset() and CAS. There are other places where the FDT is manipulated in the pSeries machines, most notably the hotplug/unplug path. For now we'll acknowledge that we won't have the most accurate representation of the FDT, depending on the current machine state, when using this QMP/HMP fdt command. Making the internal FDT representation always match the actual FDT representation that the guest is using is a problem for another day. spapr->fdt_blob is left untouched for now. To replace it with machine->fdt, since we're migrating spapr->fdt_blob, we would need to migrate machine->fdt as well. This is something that we would like to to do keep our code simpler but it's also a work we'll leave for later. Reviewed-by: David Gibson Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Daniel Henrique Barboza Message-Id: <20220926173855.1159396-14-danielhb413@gmail.com> --- hw/ppc/spapr.c | 3 +++ hw/ppc/spapr_hcall.c | 8 ++++++++ 2 files changed, 11 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 8bbaf4f8a4..f79ac85ca1 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1713,6 +1713,9 @@ static void spapr_machine_reset(MachineState *machine) spapr->fdt_initial_size = spapr->fdt_size; spapr->fdt_blob = fdt; + /* Set machine->fdt for 'dumpdtb' QMP/HMP command */ + machine->fdt = fdt; + /* Set up the entry state */ first_ppc_cpu->env.gpr[5] = 0; diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index a8d4a6bcf0..891206e893 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1256,6 +1256,14 @@ target_ulong do_client_architecture_support(PowerPCCPU *cpu, spapr->fdt_initial_size = spapr->fdt_size; spapr->fdt_blob = fdt; + /* + * Set the machine->fdt pointer again since we just freed + * it above (by freeing spapr->fdt_blob). We set this + * pointer to enable support for the 'dumpdtb' QMP/HMP + * command. + */ + MACHINE(spapr)->fdt = fdt; + return H_SUCCESS; } -- 2.37.3