a1e985833c
For convenience with kvm, x86 allows the user to specify -cpu host on the qemu command line, which means make the guest cpu the same as the host cpu. This patch implements the same option for ppc targets. For now, this just read the host PVR (Processor Version Register) and selects one of our existing CPU specs based on it. This means that the option will not work if the host cpu is not supported by TCG, even if that wouldn't matter for use under kvm. In future, we can extend this in future to override parts of the cpu spec based on information obtained from the host (via /proc/cpuinfo, the host device tree, or explicit KVM calls). That will let us handle cases where the real kvm-virtualized CPU doesn't behave exactly like the TCG-emulated CPU. With appropriate annotation of the CPU specs we'll also then be able to use host cpus under kvm even when there isn't a matching full TCG model. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
/*
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* Copyright 2008 IBM Corporation.
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*
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* This work is licensed under the GNU GPL license version 2 or later.
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*
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*/
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#ifndef __KVM_PPC_H__
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#define __KVM_PPC_H__
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#include "memory.h"
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void kvmppc_init(void);
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#ifdef CONFIG_KVM
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uint32_t kvmppc_get_tbfreq(void);
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uint64_t kvmppc_get_clockfreq(void);
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uint32_t kvmppc_get_vmx(void);
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uint32_t kvmppc_get_dfp(void);
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int kvmppc_get_hypercall(CPUState *env, uint8_t *buf, int buf_len);
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int kvmppc_set_interrupt(CPUState *env, int irq, int level);
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void kvmppc_set_papr(CPUState *env);
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int kvmppc_smt_threads(void);
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off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem);
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void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd);
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int kvmppc_remove_spapr_tce(void *table, int pfd, uint32_t window_size);
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const ppc_def_t *kvmppc_host_cpu_def(void);
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#else
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static inline uint32_t kvmppc_get_tbfreq(void)
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{
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return 0;
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}
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static inline uint64_t kvmppc_get_clockfreq(void)
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{
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return 0;
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}
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static inline uint32_t kvmppc_get_vmx(void)
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{
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return 0;
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}
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static inline uint32_t kvmppc_get_dfp(void)
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{
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return 0;
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}
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static inline int kvmppc_get_hypercall(CPUState *env, uint8_t *buf, int buf_len)
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{
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return -1;
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}
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static inline int kvmppc_set_interrupt(CPUState *env, int irq, int level)
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{
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return -1;
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}
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static inline void kvmppc_set_papr(CPUState *env)
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{
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}
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static inline int kvmppc_smt_threads(void)
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{
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return 1;
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}
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static inline off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem)
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{
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return 0;
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}
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static inline void *kvmppc_create_spapr_tce(uint32_t liobn,
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uint32_t window_size, int *fd)
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{
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return NULL;
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}
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static inline int kvmppc_remove_spapr_tce(void *table, int pfd,
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uint32_t window_size)
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{
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return -1;
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}
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static inline const ppc_def_t *kvmppc_host_cpu_def(void)
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{
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return NULL;
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}
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#endif
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#ifndef CONFIG_KVM
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#define kvmppc_eieio() do { } while (0)
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#else
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#define kvmppc_eieio() \
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do { \
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if (kvm_enabled()) { \
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asm volatile("eieio" : : : "memory"); \
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} \
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} while (0)
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#endif
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#ifndef KVM_INTERRUPT_SET
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#define KVM_INTERRUPT_SET -1
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#endif
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#ifndef KVM_INTERRUPT_UNSET
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#define KVM_INTERRUPT_UNSET -2
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#endif
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#ifndef KVM_INTERRUPT_SET_LEVEL
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#define KVM_INTERRUPT_SET_LEVEL -3
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#endif
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#endif /* __KVM_PPC_H__ */
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