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a8e4ef8414
Instead of checking whether we should reschedule only when we exited due to an interrupt, let's always check before entering the guest back again. This gets the target more in line with the other archs. Also while at it, generalize the whole thing so that eventually we could have a single kvmppc_prepare_to_enter function for all ppc targets that does signal and reschedule checking for us. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
216 lines
8.1 KiB
C
216 lines
8.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2008
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __POWERPC_KVM_PPC_H__
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#define __POWERPC_KVM_PPC_H__
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/* This file exists just so we can dereference kvm_vcpu, avoiding nested header
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* dependencies. */
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#include <linux/mutex.h>
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#include <linux/timer.h>
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#include <linux/types.h>
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#include <linux/kvm_types.h>
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#include <linux/kvm_host.h>
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#ifdef CONFIG_PPC_BOOK3S
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#include <asm/kvm_book3s.h>
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#else
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#include <asm/kvm_booke.h>
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#endif
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#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
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#include <asm/paca.h>
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#endif
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enum emulation_result {
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EMULATE_DONE, /* no further processing */
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EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
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EMULATE_DO_DCR, /* kvm_run filled with DCR request */
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EMULATE_FAIL, /* can't emulate this instruction */
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EMULATE_AGAIN, /* something went wrong. go again */
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};
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extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
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extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
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extern char kvmppc_handlers_start[];
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extern unsigned long kvmppc_handler_len;
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extern void kvmppc_handler_highmem(void);
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extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
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extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int rt, unsigned int bytes,
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int is_bigendian);
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extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int rt, unsigned int bytes,
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int is_bigendian);
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extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
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u64 val, unsigned int bytes, int is_bigendian);
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extern int kvmppc_emulate_instruction(struct kvm_run *run,
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struct kvm_vcpu *vcpu);
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extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
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extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
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extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
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extern void kvmppc_decrementer_func(unsigned long data);
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extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
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/* Core-specific hooks */
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extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
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unsigned int gtlb_idx);
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extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
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extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
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extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
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extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
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extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
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extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
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extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
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gva_t eaddr);
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extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
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extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
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extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
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unsigned int id);
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extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_check_processor_compat(void);
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extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
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struct kvm_translation *tr);
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extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
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extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
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extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
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extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
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struct kvm_interrupt *irq);
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extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
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struct kvm_interrupt *irq);
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extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int op, int *advance);
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extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
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extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
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extern int kvmppc_booke_init(void);
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extern void kvmppc_booke_exit(void);
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extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
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extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
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extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
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extern long kvmppc_alloc_hpt(struct kvm *kvm);
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extern void kvmppc_free_hpt(struct kvm *kvm);
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extern long kvmppc_prepare_vrma(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem);
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extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
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struct kvm_memory_slot *memslot, unsigned long porder);
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extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
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extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
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struct kvm_create_spapr_tce *args);
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extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
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struct kvm_allocate_rma *rma);
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extern struct kvmppc_linear_info *kvm_alloc_rma(void);
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extern void kvm_release_rma(struct kvmppc_linear_info *ri);
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extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
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extern void kvm_release_hpt(struct kvmppc_linear_info *li);
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extern int kvmppc_core_init_vm(struct kvm *kvm);
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extern void kvmppc_core_destroy_vm(struct kvm *kvm);
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extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem);
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extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem);
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extern int kvmppc_bookehv_init(void);
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extern void kvmppc_bookehv_exit(void);
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/*
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* Cuts out inst bits with ordering according to spec.
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* That means the leftmost bit is zero. All given bits are included.
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*/
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static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
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{
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u32 r;
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u32 mask;
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BUG_ON(msb > lsb);
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mask = (1 << (lsb - msb + 1)) - 1;
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r = (inst >> (63 - lsb)) & mask;
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return r;
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}
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/*
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* Replaces inst bits with ordering according to spec.
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*/
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static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
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{
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u32 r;
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u32 mask;
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BUG_ON(msb > lsb);
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mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
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r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
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return r;
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}
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void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
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int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
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void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
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int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
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int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
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int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
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void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
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#ifdef CONFIG_KVM_BOOK3S_64_HV
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static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
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{
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paca[cpu].kvm_hstate.xics_phys = addr;
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}
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extern void kvm_linear_init(void);
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#else
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static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
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{}
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static inline void kvm_linear_init(void)
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{}
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#endif
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int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
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struct kvm_config_tlb *cfg);
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int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
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struct kvm_dirty_tlb *cfg);
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long kvmppc_alloc_lpid(void);
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void kvmppc_claim_lpid(long lpid);
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void kvmppc_free_lpid(long lpid);
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void kvmppc_init_lpid(unsigned long nr_lpids);
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#endif /* __POWERPC_KVM_PPC_H__ */
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