From nobody Sun Feb 8 12:38:14 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.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=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1625618285028569.6468433720028; Tue, 6 Jul 2021 17:38:05 -0700 (PDT) Received: from localhost ([::1]:38358 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0vZk-0001rM-2u for importer@patchew.org; Tue, 06 Jul 2021 20:38:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60660) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0vVW-0004nt-7p; Tue, 06 Jul 2021 20:33:42 -0400 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]:37452) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m0vVT-0001PS-Ts; Tue, 06 Jul 2021 20:33:42 -0400 Received: by mail-pf1-x42d.google.com with SMTP id 17so623343pfz.4; Tue, 06 Jul 2021 17:33:39 -0700 (PDT) Received: from rekt.ibmuc.com ([2804:431:c7c7:7611:b123:7cbc:3065:30b1]) by smtp.gmail.com with ESMTPSA id co12sm4004871pjb.33.2021.07.06.17.33.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jul 2021 17:33:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=R4QKEhIXYz4bPh2oxMeDqNLW7Ym0Fnk9LSFZ9G/1Tbc=; b=juTuJniVdj+qfyLWq2mBHWTi5iklikIA8b8utwauAUT5ujnHb0VXdDf2rGPBUEDkXX ZX2ERdu817wn3DiEL5Kv1Oa4DQ4/tPli3nV6P1zjYdD4KhN2GkC5WzozhvaGTc8heW67 vVFdGLJ8bnv2gCS6tBQtAyhoyJG2fRE11RW8NYiAmDhEv06m/iayYMTGokWYtOaJDqHz m3k7ClYV59/N23t6axh74KiE5/DTc22VWwXx3piWoKegy39PCpfgXJygLVrGP5B/rlik m5YfXwr40CzdIF4P2GugJOOOaatWgvVSxurklp4afRrqKIOo5XFl8eAwrNuYzdUcMwyd oqBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=R4QKEhIXYz4bPh2oxMeDqNLW7Ym0Fnk9LSFZ9G/1Tbc=; b=DbmrOzFMds0OGvv7X1qw/BUmQzpY0Do6xyy7mvFrUEHA1HdaY8c2FrY4N5dkXCS1gh t1A9ey0FyiWXLhZhsXnN4hmBzXXhI0J+XL3No7iRXQP7Mu+bRbH+TJXurst7+XLzq/LF IPEw7usWGzI3TKiPslHsIRZEr4qqpzCKdWeGmpG7UkzCvNvqn8h7mR7V1lBOJeylX9/c qglH0HL2nXl8nNbH1ejlXgFkPhn0dhBV6AAd9PVXsvjy7JRe4K+wKi+28BJAY67G8W7r MzxhvrpsTQ7wNaDFMFyIguTIjkNydno4qG1IVK43zt9JEbakoSHemH4EE8DJM913i09W 8ftQ== X-Gm-Message-State: AOAM531zoRBYxXQ2X74KsJH7NM74YFjDf0X5LN4KWPEe1y/fgP/dzDgm 1+CWphRaCC0H1aWePPxmKei7fbg7jgQOcw== X-Google-Smtp-Source: ABdhPJwjgIXae/saa9m81FWcim3E5tKS/u2qqo8vWQGt9dq5KMXumQt0OqgWdQ14Gtb+YreL3yUr8A== X-Received: by 2002:a63:d014:: with SMTP id z20mr23346943pgf.203.1625618018268; Tue, 06 Jul 2021 17:33:38 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Subject: [PATCH v4 2/3] spapr: use DEVICE_UNPLUG_ERROR to report unplug errors Date: Tue, 6 Jul 2021 21:33:13 -0300 Message-Id: <20210707003314.37110-3-danielhb413@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210707003314.37110-1-danielhb413@gmail.com> References: <20210707003314.37110-1-danielhb413@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=2607:f8b0:4864:20::42d; envelope-from=danielhb413@gmail.com; helo=mail-pf1-x42d.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Henrique Barboza , armbru@redhat.com, groug@kaod.org, qemu-ppc@nongnu.org, eblake@redhat.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1625618286850100001 Content-Type: text/plain; charset="utf-8" Linux Kernel 5.12 is now unisolating CPU DRCs in the device_removal error path, signalling that the hotunplug process wasn't successful. This allow us to send a DEVICE_UNPLUG_ERROR in drc_unisolate_logical() to signal this error to the management layer. We also have another error path in spapr_memory_unplug_rollback() for configured LMB DRCs. Kernels older than 5.13 will not unisolate the LMBs in the hotunplug error path, but it will reconfigure them. Let's send the DEVICE_UNPLUG_ERROR event in that code path as well to cover the case of older kernels. Reviewed-by: David Gibson Signed-off-by: Daniel Henrique Barboza Reviewed-by: Greg Kurz --- hw/ppc/spapr.c | 8 ++++++++ hw/ppc/spapr_drc.c | 15 +++++++++------ 2 files changed, 17 insertions(+), 6 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 4dd90b75cc..fc071a1767 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -29,6 +29,7 @@ #include "qemu/datadir.h" #include "qapi/error.h" #include "qapi/qapi-events-machine.h" +#include "qapi/qapi-events-qdev.h" #include "qapi/visitor.h" #include "sysemu/sysemu.h" #include "sysemu/hostmem.h" @@ -3641,7 +3642,14 @@ void spapr_memory_unplug_rollback(SpaprMachineState = *spapr, DeviceState *dev) */ qapi_error =3D g_strdup_printf("Memory hotunplug rejected by the guest= " "for device %s", dev->id); + + /* + * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_ERROR + * while the deprecation of MEM_UNPLUG_ERROR is + * pending. + */ qapi_event_send_mem_unplug_error(dev->id, qapi_error); + qapi_event_send_device_unplug_error(dev->id, qapi_error); } =20 /* Callback to be called during DRC release. */ diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index a2f2634601..45a7b1aa16 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -17,6 +17,8 @@ #include "hw/ppc/spapr_drc.h" #include "qom/object.h" #include "migration/vmstate.h" +#include "qapi/error.h" +#include "qapi/qapi-events-qdev.h" #include "qapi/visitor.h" #include "qemu/error-report.h" #include "hw/ppc/spapr.h" /* for RTAS return codes */ @@ -160,6 +162,10 @@ static uint32_t drc_unisolate_logical(SpaprDrc *drc) * means that the kernel is refusing the removal. */ if (drc->unplug_requested && drc->dev) { + const char qapi_error_fmt[] =3D "Device hotunplug rejected by = the " + "guest for device %s"; + g_autofree char *qapi_error =3D NULL; + if (spapr_drc_type(drc) =3D=3D SPAPR_DR_CONNECTOR_TYPE_LMB) { spapr =3D SPAPR_MACHINE(qdev_get_machine()); =20 @@ -167,13 +173,10 @@ static uint32_t drc_unisolate_logical(SpaprDrc *drc) } =20 drc->unplug_requested =3D false; - error_report("Device hotunplug rejected by the guest " - "for device %s", drc->dev->id); + error_report(qapi_error_fmt, drc->dev->id); =20 - /* - * TODO: send a QAPI DEVICE_UNPLUG_ERROR event when - * it is implemented. - */ + qapi_error =3D g_strdup_printf(qapi_error_fmt, drc->dev->id); + qapi_event_send_device_unplug_error(drc->dev->id, qapi_error); } =20 return RTAS_OUT_SUCCESS; /* Nothing to do */ --=20 2.31.1