diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibCpuHotPlug.cpp')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibCpuHotPlug.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibCpuHotPlug.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibCpuHotPlug.cpp new file mode 100644 index 00000000..a5da33e4 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibCpuHotPlug.cpp @@ -0,0 +1,133 @@ +/* $Id: VBoxGuestR3LibCpuHotPlug.cpp $ */ +/** @file + * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, CPU Hot Plugging. + */ + +/* + * Copyright (C) 2010-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "VBoxGuestR3LibInternal.h" +#include <iprt/assert.h> +#include <iprt/errcore.h> + + +/** + * Initialize CPU hot plugging. + * + * This will enable the CPU hot plugging events. + * + * @returns VBox status code. + */ +VBGLR3DECL(int) VbglR3CpuHotPlugInit(void) +{ + int rc = VbglR3CtlFilterMask(VMMDEV_EVENT_CPU_HOTPLUG, 0); + if (RT_FAILURE(rc)) + return rc; + + VMMDevCpuHotPlugStatusRequest Req; + vmmdevInitRequest(&Req.header, VMMDevReq_SetCpuHotPlugStatus); + Req.enmStatusType = VMMDevCpuStatusType_Enable; + rc = vbglR3GRPerform(&Req.header); + if (RT_FAILURE(rc)) + VbglR3CtlFilterMask(0, VMMDEV_EVENT_CPU_HOTPLUG); + + return rc; +} + + +/** + * Terminate CPU hot plugging. + * + * This will disable the CPU hot plugging events. + * + * @returns VBox status code. + */ +VBGLR3DECL(int) VbglR3CpuHotPlugTerm(void) +{ + /* Clear the events. */ + VbglR3CtlFilterMask(0, VMMDEV_EVENT_CPU_HOTPLUG); + + VMMDevCpuHotPlugStatusRequest Req; + vmmdevInitRequest(&Req.header, VMMDevReq_SetCpuHotPlugStatus); + Req.enmStatusType = VMMDevCpuStatusType_Disable; + return vbglR3GRPerform(&Req.header); +} + + +/** + * Waits for a CPU hot plugging event and retrieve the data associated with it. + * + * @returns VBox status code. + * @param penmEventType Where to store the event type on success. + * @param pidCpuCore Where to store the CPU core ID on success. + * @param pidCpuPackage Where to store the CPU package ID on success. + */ +VBGLR3DECL(int) VbglR3CpuHotPlugWaitForEvent(VMMDevCpuEventType *penmEventType, uint32_t *pidCpuCore, uint32_t *pidCpuPackage) +{ + AssertPtrReturn(penmEventType, VERR_INVALID_POINTER); + AssertPtrReturn(pidCpuCore, VERR_INVALID_POINTER); + AssertPtrReturn(pidCpuPackage, VERR_INVALID_POINTER); + + uint32_t fEvents = 0; + int rc = VbglR3WaitEvent(VMMDEV_EVENT_CPU_HOTPLUG, RT_INDEFINITE_WAIT, &fEvents); + if (RT_SUCCESS(rc)) + { + /* did we get the right event? */ + if (fEvents & VMMDEV_EVENT_CPU_HOTPLUG) + { + VMMDevGetCpuHotPlugRequest Req; + + /* get the CPU hot plugging request */ + vmmdevInitRequest(&Req.header, VMMDevReq_GetCpuHotPlugRequest); + Req.idCpuCore = UINT32_MAX; + Req.idCpuPackage = UINT32_MAX; + Req.enmEventType = VMMDevCpuEventType_None; + rc = vbglR3GRPerform(&Req.header); + if (RT_SUCCESS(rc)) + { + *penmEventType = Req.enmEventType; + *pidCpuCore = Req.idCpuCore; + *pidCpuPackage = Req.idCpuPackage; + return VINF_SUCCESS; + } + } + else + rc = VERR_TRY_AGAIN; + } + else if (rc == VERR_TIMEOUT) /* just in case */ + rc = VERR_TRY_AGAIN; + return rc; +} + |