mirror of https://github.com/xemu-project/xemu.git
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* CPU Topology
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*
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* Copyright IBM Corp. 2022, 2023
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* Author(s): Pierre Morel <pmorel@linux.ibm.com>
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*
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*/
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#ifndef HW_S390X_CPU_TOPOLOGY_H
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#define HW_S390X_CPU_TOPOLOGY_H
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#ifndef CONFIG_USER_ONLY
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#include "qemu/queue.h"
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#include "hw/boards.h"
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#include "qapi/qapi-types-machine-target.h"
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typedef struct S390Topology {
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uint8_t *cores_per_socket;
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} S390Topology;
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#ifdef CONFIG_KVM
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bool s390_has_topology(void);
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void s390_topology_setup_cpu(MachineState *ms, S390CPU *cpu, Error **errp);
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#else
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static inline bool s390_has_topology(void)
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{
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return false;
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}
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static inline void s390_topology_setup_cpu(MachineState *ms,
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S390CPU *cpu,
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Error **errp) {}
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#endif
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extern S390Topology s390_topology;
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static inline int s390_std_socket(int n, CpuTopology *smp)
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{
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return (n / smp->cores) % smp->sockets;
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}
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static inline int s390_std_book(int n, CpuTopology *smp)
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{
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return (n / (smp->cores * smp->sockets)) % smp->books;
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}
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static inline int s390_std_drawer(int n, CpuTopology *smp)
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{
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return (n / (smp->cores * smp->sockets * smp->books)) % smp->drawers;
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}
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#endif /* CONFIG_USER_ONLY */
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#endif
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