mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 04:06:46 +00:00
335d52f457
This commit adds the cpu-cluster type. It aims at gathering CPUs from the same cluster in a machine. For now it only has a `cluster-id` property. Documentation in cluster.h written with the help of Peter Maydell. Signed-off-by: Luc Michel <luc.michel@greensocs.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 20181207090135.7651-2-luc.michel@greensocs.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* QEMU CPU cluster
|
|
*
|
|
* Copyright (c) 2018 GreenSocs SAS
|
|
*
|
|
* 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; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* 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
|
|
* <http://www.gnu.org/licenses/gpl-2.0.html>
|
|
*/
|
|
#ifndef HW_CPU_CLUSTER_H
|
|
#define HW_CPU_CLUSTER_H
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/qdev.h"
|
|
|
|
/*
|
|
* CPU Cluster type
|
|
*
|
|
* A cluster is a group of CPUs which are all identical and have the same view
|
|
* of the rest of the system. It is mainly an internal QEMU representation and
|
|
* does not necessarily match with the notion of clusters on the real hardware.
|
|
*
|
|
* If CPUs are not identical (for example, Cortex-A53 and Cortex-A57 CPUs in an
|
|
* Arm big.LITTLE system) they should be in different clusters. If the CPUs do
|
|
* not have the same view of memory (for example the main CPU and a management
|
|
* controller processor) they should be in different clusters.
|
|
*/
|
|
|
|
#define TYPE_CPU_CLUSTER "cpu-cluster"
|
|
#define CPU_CLUSTER(obj) \
|
|
OBJECT_CHECK(CPUClusterState, (obj), TYPE_CPU_CLUSTER)
|
|
|
|
/**
|
|
* CPUClusterState:
|
|
* @cluster_id: The cluster ID. This value is for internal use only and should
|
|
* not be exposed directly to the user or to the guest.
|
|
*
|
|
* State of a CPU cluster.
|
|
*/
|
|
typedef struct CPUClusterState {
|
|
/*< private >*/
|
|
DeviceState parent_obj;
|
|
|
|
/*< public >*/
|
|
uint32_t cluster_id;
|
|
} CPUClusterState;
|
|
|
|
#endif
|