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f8d41d0511
This removes the TARGET_S390X and CONFIG_KVM conditions from the CPU commands that are conceptually specific to s390x. Top level stubs are provided to cope with non-s390x targets, or builds without KVM. The removal of CONFIG_KVM is justified by the fact there is no conceptual difference between running 'qemu-system-s390x -accel tcg' on a build with and without KVM built-in, so apps only using TCG can't rely on the CONFIG_KVM in the schema. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Message-ID: <20250522190542.588267-11-pierrick.bouvier@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com>
83 lines
1.9 KiB
C
83 lines
1.9 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-s390x.h"
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#define S390_TOPOLOGY_CPU_IFL 0x03
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typedef struct S390TopologyId {
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uint8_t sentinel;
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uint8_t drawer;
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uint8_t book;
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uint8_t socket;
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uint8_t type;
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uint8_t vertical:1;
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uint8_t entitlement:2;
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uint8_t dedicated;
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uint8_t origin;
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} S390TopologyId;
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typedef struct S390TopologyEntry {
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QTAILQ_ENTRY(S390TopologyEntry) next;
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S390TopologyId id;
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uint64_t mask;
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} S390TopologyEntry;
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typedef struct S390Topology {
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uint8_t *cores_per_socket;
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S390CpuPolarization polarization;
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} S390Topology;
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typedef QTAILQ_HEAD(, S390TopologyEntry) S390TopologyList;
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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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void s390_topology_reset(void);
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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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static inline void s390_topology_reset(void)
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{
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/* Unreachable, CPU topology not implemented for TCG */
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g_assert_not_reached();
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}
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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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