This introduces stub implementations of the H_RESIZE_HPT_PREPARE and H_RESIZE_HPT_COMMIT hypercalls which we hope to add in a PAPR extension to allow run time resizing of a guest's hash page table. It also adds a new machine property for controlling whether this new facility is available. For now we only allow resizing with TCG, allowing it with KVM will require kernel changes as well. Finally, it adds a new string to the hypertas property in the device tree, advertising to the guest the availability of the HPT resizing hypercalls. This is a tentative suggested value, and would need to be standardized by PAPR before being merged. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com>
351 lines
8 KiB
C
351 lines
8 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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#define TYPE_HOST_POWERPC_CPU "host-" TYPE_POWERPC_CPU
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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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bool kvmppc_get_host_model(char **buf);
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bool kvmppc_get_host_serial(char **buf);
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int kvmppc_get_hasidle(CPUPPCState *env);
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int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len);
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int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level);
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void kvmppc_enable_logical_ci_hcalls(void);
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void kvmppc_enable_set_mode_hcall(void);
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void kvmppc_enable_clear_ref_mod_hcalls(void);
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void kvmppc_set_papr(PowerPCCPU *cpu);
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int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr);
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void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy);
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int kvmppc_smt_threads(void);
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int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
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int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
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int kvmppc_set_tcr(PowerPCCPU *cpu);
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int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu);
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target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu,
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bool radix, bool gtse,
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uint64_t proc_tbl);
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#ifndef CONFIG_USER_ONLY
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off_t kvmppc_alloc_rma(void **rma);
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bool kvmppc_spapr_use_multitce(void);
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int kvmppc_spapr_enable_inkernel_multitce(void);
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void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t page_shift,
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uint64_t bus_offset, uint32_t nb_table,
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int *pfd, bool need_vfio);
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int kvmppc_remove_spapr_tce(void *table, int pfd, uint32_t window_size);
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int kvmppc_reset_htab(int shift_hint);
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uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift);
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#endif /* !CONFIG_USER_ONLY */
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bool kvmppc_has_cap_epr(void);
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int kvmppc_define_rtas_kernel_token(uint32_t token, const char *function);
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bool kvmppc_has_cap_htab_fd(void);
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int kvmppc_get_htab_fd(bool write);
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int kvmppc_save_htab(QEMUFile *f, int fd, size_t bufsize, int64_t max_ns);
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int kvmppc_load_htab_chunk(QEMUFile *f, int fd, uint32_t index,
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uint16_t n_valid, uint16_t n_invalid);
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void kvmppc_read_hptes(ppc_hash_pte64_t *hptes, hwaddr ptex, int n);
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void kvmppc_write_hpte(hwaddr ptex, uint64_t pte0, uint64_t pte1);
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bool kvmppc_has_cap_fixup_hcalls(void);
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bool kvmppc_has_cap_htm(void);
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bool kvmppc_has_cap_mmu_radix(void);
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bool kvmppc_has_cap_mmu_hash_v3(void);
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int kvmppc_enable_hwrng(void);
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int kvmppc_put_books_sregs(PowerPCCPU *cpu);
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PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void);
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void kvmppc_check_papr_resize_hpt(Error **errp);
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bool kvmppc_is_mem_backend_page_size_ok(const char *obj_path);
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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 bool kvmppc_get_host_model(char **buf)
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{
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return false;
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}
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static inline bool kvmppc_get_host_serial(char **buf)
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{
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return false;
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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_hasidle(CPUPPCState *env)
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{
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return 0;
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}
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static inline int kvmppc_get_hypercall(CPUPPCState *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(PowerPCCPU *cpu, 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_enable_logical_ci_hcalls(void)
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{
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}
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static inline void kvmppc_enable_set_mode_hcall(void)
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{
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}
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static inline void kvmppc_enable_clear_ref_mod_hcalls(void)
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{
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}
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static inline void kvmppc_set_papr(PowerPCCPU *cpu)
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{
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}
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static inline int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr)
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{
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return 0;
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}
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static inline void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy)
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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 int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
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{
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return 0;
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}
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static inline int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits)
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{
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return 0;
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}
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static inline int kvmppc_set_tcr(PowerPCCPU *cpu)
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{
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return 0;
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}
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static inline int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu)
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{
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return -1;
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}
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static inline target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu,
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bool radix, bool gtse,
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uint64_t proc_tbl)
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{
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return 0;
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}
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#ifndef CONFIG_USER_ONLY
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static inline off_t kvmppc_alloc_rma(void **rma)
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{
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return 0;
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}
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static inline bool kvmppc_spapr_use_multitce(void)
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{
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return false;
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}
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static inline int kvmppc_spapr_enable_inkernel_multitce(void)
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{
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return -1;
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}
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static inline void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t page_shift,
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uint64_t bus_offset,
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uint32_t nb_table,
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int *pfd, bool need_vfio)
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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 nb_table)
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{
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return -1;
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}
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static inline int kvmppc_reset_htab(int shift_hint)
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{
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return 0;
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}
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static inline uint64_t kvmppc_rma_size(uint64_t current_size,
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unsigned int hash_shift)
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{
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return ram_size;
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}
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static inline bool kvmppc_is_mem_backend_page_size_ok(const char *obj_path)
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{
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return true;
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}
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#endif /* !CONFIG_USER_ONLY */
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static inline bool kvmppc_has_cap_epr(void)
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{
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return false;
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}
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static inline int kvmppc_define_rtas_kernel_token(uint32_t token,
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const char *function)
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{
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return -1;
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}
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static inline bool kvmppc_has_cap_htab_fd(void)
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{
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return false;
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}
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static inline int kvmppc_get_htab_fd(bool write)
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{
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return -1;
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}
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static inline int kvmppc_save_htab(QEMUFile *f, int fd, size_t bufsize,
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int64_t max_ns)
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{
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abort();
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}
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static inline int kvmppc_load_htab_chunk(QEMUFile *f, int fd, uint32_t index,
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uint16_t n_valid, uint16_t n_invalid)
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{
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abort();
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}
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static inline void kvmppc_read_hptes(ppc_hash_pte64_t *hptes,
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hwaddr ptex, int n)
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{
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abort();
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}
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static inline void kvmppc_write_hpte(hwaddr ptex, uint64_t pte0, uint64_t pte1)
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{
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abort();
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}
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static inline bool kvmppc_has_cap_fixup_hcalls(void)
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{
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abort();
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}
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static inline bool kvmppc_has_cap_htm(void)
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{
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return false;
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}
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static inline bool kvmppc_has_cap_mmu_radix(void)
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{
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return false;
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}
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static inline bool kvmppc_has_cap_mmu_hash_v3(void)
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{
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return false;
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}
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static inline int kvmppc_enable_hwrng(void)
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{
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return -1;
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}
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static inline int kvmppc_put_books_sregs(PowerPCCPU *cpu)
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{
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abort();
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}
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static inline PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void)
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{
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return NULL;
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}
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static inline void kvmppc_check_papr_resize_hpt(Error **errp)
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{
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return;
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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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static inline void kvmppc_dcbst_range(PowerPCCPU *cpu, uint8_t *addr, int len)
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{
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}
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static inline void kvmppc_icbi_range(PowerPCCPU *cpu, uint8_t *addr, int len)
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{
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}
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#else /* CONFIG_KVM */
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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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/* Store data cache blocks back to memory */
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static inline void kvmppc_dcbst_range(PowerPCCPU *cpu, uint8_t *addr, int len)
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{
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uint8_t *p;
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for (p = addr; p < addr + len; p += cpu->env.dcache_line_size) {
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asm volatile("dcbst 0,%0" : : "r"(p) : "memory");
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}
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}
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/* Invalidate instruction cache blocks */
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static inline void kvmppc_icbi_range(PowerPCCPU *cpu, uint8_t *addr, int len)
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{
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uint8_t *p;
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for (p = addr; p < addr + len; p += cpu->env.icache_line_size) {
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asm volatile("icbi 0,%0" : : "r"(p));
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}
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}
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#endif /* CONFIG_KVM */
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#endif /* KVM_PPC_H */
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