[v4,6/7] KVM: MIPS: clean up redundant 'kvm_run' parameters

In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu'
structure. For historical reasons, many kvm-related function parameters
retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. This
patch does a unified cleanup of these remaining redundant parameters.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
---
 arch/mips/include/asm/kvm_host.h |  28 +-------
 arch/mips/kvm/emulate.c          |  59 ++++++----------
 arch/mips/kvm/mips.c             |  11 ++-
 arch/mips/kvm/trap_emul.c        | 114 ++++++++++++++-----------------
 arch/mips/kvm/vz.c               |  26 +++----
 5 files changed, 87 insertions(+), 151 deletions(-)

Reviewed-by: Huacai Chen <chenhc@lemote.com>

On Mon, Apr 27, 2020 at 12:35 PM Tianjia Zhang
<tianjia.zhang@linux.alibaba.com> wrote:
>
> In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu'
> structure. For historical reasons, many kvm-related function parameters
> retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. This
> patch does a unified cleanup of these remaining redundant parameters.
>
> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
> ---
>  arch/mips/include/asm/kvm_host.h |  28 +-------
>  arch/mips/kvm/emulate.c          |  59 ++++++----------
>  arch/mips/kvm/mips.c             |  11 ++-
>  arch/mips/kvm/trap_emul.c        | 114 ++++++++++++++-----------------
>  arch/mips/kvm/vz.c               |  26 +++----
>  5 files changed, 87 insertions(+), 151 deletions(-)
>
> diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
> index 2c343c346b79..971439297cea 100644
> --- a/arch/mips/include/asm/kvm_host.h
> +++ b/arch/mips/include/asm/kvm_host.h
> @@ -812,8 +812,8 @@ struct kvm_mips_callbacks {
>                            const struct kvm_one_reg *reg, s64 v);
>         int (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
>         int (*vcpu_put)(struct kvm_vcpu *vcpu, int cpu);
> -       int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
> -       void (*vcpu_reenter)(struct kvm_run *run, struct kvm_vcpu *vcpu);
> +       int (*vcpu_run)(struct kvm_vcpu *vcpu);
> +       void (*vcpu_reenter)(struct kvm_vcpu *vcpu);
>  };
>  extern struct kvm_mips_callbacks *kvm_mips_callbacks;
>  int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks);
> @@ -868,7 +868,6 @@ extern int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
>
>  extern enum emulation_result kvm_mips_handle_tlbmiss(u32 cause,
>                                                      u32 *opc,
> -                                                    struct kvm_run *run,
>                                                      struct kvm_vcpu *vcpu,
>                                                      bool write_fault);
>
> @@ -975,83 +974,67 @@ static inline bool kvm_is_ifetch_fault(struct kvm_vcpu_arch *vcpu)
>
>  extern enum emulation_result kvm_mips_emulate_inst(u32 cause,
>                                                    u32 *opc,
> -                                                  struct kvm_run *run,
>                                                    struct kvm_vcpu *vcpu);
>
>  long kvm_mips_guest_exception_base(struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_syscall(u32 cause,
>                                                       u32 *opc,
> -                                                     struct kvm_run *run,
>                                                       struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_tlbmiss_ld(u32 cause,
>                                                          u32 *opc,
> -                                                        struct kvm_run *run,
>                                                          struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_tlbinv_ld(u32 cause,
>                                                         u32 *opc,
> -                                                       struct kvm_run *run,
>                                                         struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_tlbmiss_st(u32 cause,
>                                                          u32 *opc,
> -                                                        struct kvm_run *run,
>                                                          struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_tlbinv_st(u32 cause,
>                                                         u32 *opc,
> -                                                       struct kvm_run *run,
>                                                         struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_tlbmod(u32 cause,
>                                                      u32 *opc,
> -                                                    struct kvm_run *run,
>                                                      struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_fpu_exc(u32 cause,
>                                                       u32 *opc,
> -                                                     struct kvm_run *run,
>                                                       struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_handle_ri(u32 cause,
>                                                 u32 *opc,
> -                                               struct kvm_run *run,
>                                                 struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_ri_exc(u32 cause,
>                                                      u32 *opc,
> -                                                    struct kvm_run *run,
>                                                      struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_bp_exc(u32 cause,
>                                                      u32 *opc,
> -                                                    struct kvm_run *run,
>                                                      struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_trap_exc(u32 cause,
>                                                        u32 *opc,
> -                                                      struct kvm_run *run,
>                                                        struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_msafpe_exc(u32 cause,
>                                                          u32 *opc,
> -                                                        struct kvm_run *run,
>                                                          struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_fpe_exc(u32 cause,
>                                                       u32 *opc,
> -                                                     struct kvm_run *run,
>                                                       struct kvm_vcpu *vcpu);
>
>  extern enum emulation_result kvm_mips_emulate_msadis_exc(u32 cause,
>                                                          u32 *opc,
> -                                                        struct kvm_run *run,
>                                                          struct kvm_vcpu *vcpu);
>
> -extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
> -                                                        struct kvm_run *run);
> +extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu);
>
>  u32 kvm_mips_read_count(struct kvm_vcpu *vcpu);
>  void kvm_mips_write_count(struct kvm_vcpu *vcpu, u32 count);
> @@ -1080,26 +1063,21 @@ static inline void kvm_vz_lose_htimer(struct kvm_vcpu *vcpu) {}
>
>  enum emulation_result kvm_mips_check_privilege(u32 cause,
>                                                u32 *opc,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu);
>
>  enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
>                                              u32 *opc,
>                                              u32 cause,
> -                                            struct kvm_run *run,
>                                              struct kvm_vcpu *vcpu);
>  enum emulation_result kvm_mips_emulate_CP0(union mips_instruction inst,
>                                            u32 *opc,
>                                            u32 cause,
> -                                          struct kvm_run *run,
>                                            struct kvm_vcpu *vcpu);
>  enum emulation_result kvm_mips_emulate_store(union mips_instruction inst,
>                                              u32 cause,
> -                                            struct kvm_run *run,
>                                              struct kvm_vcpu *vcpu);
>  enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
>                                             u32 cause,
> -                                           struct kvm_run *run,
>                                             struct kvm_vcpu *vcpu);
>
>  /* COP0 */
> diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
> index 754094b40a75..36718b8dce21 100644
> --- a/arch/mips/kvm/emulate.c
> +++ b/arch/mips/kvm/emulate.c
> @@ -1262,7 +1262,6 @@ unsigned int kvm_mips_config5_wrmask(struct kvm_vcpu *vcpu)
>
>  enum emulation_result kvm_mips_emulate_CP0(union mips_instruction inst,
>                                            u32 *opc, u32 cause,
> -                                          struct kvm_run *run,
>                                            struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -1597,11 +1596,11 @@ enum emulation_result kvm_mips_emulate_CP0(union mips_instruction inst,
>
>  enum emulation_result kvm_mips_emulate_store(union mips_instruction inst,
>                                              u32 cause,
> -                                            struct kvm_run *run,
>                                              struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er;
>         u32 rt;
> +       struct kvm_run *run = vcpu->run;
>         void *data = run->mmio.data;
>         unsigned long curr_pc;
>
> @@ -1678,9 +1677,9 @@ enum emulation_result kvm_mips_emulate_store(union mips_instruction inst,
>  }
>
>  enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
> -                                           u32 cause, struct kvm_run *run,
> -                                           struct kvm_vcpu *vcpu)
> +                                           u32 cause, struct kvm_vcpu *vcpu)
>  {
> +       struct kvm_run *run = vcpu->run;
>         enum emulation_result er;
>         unsigned long curr_pc;
>         u32 op, rt;
> @@ -1752,7 +1751,6 @@ enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
>  static enum emulation_result kvm_mips_guest_cache_op(int (*fn)(unsigned long),
>                                                      unsigned long curr_pc,
>                                                      unsigned long addr,
> -                                                    struct kvm_run *run,
>                                                      struct kvm_vcpu *vcpu,
>                                                      u32 cause)
>  {
> @@ -1780,13 +1778,13 @@ static enum emulation_result kvm_mips_guest_cache_op(int (*fn)(unsigned long),
>                         /* no matching guest TLB */
>                         vcpu->arch.host_cp0_badvaddr = addr;
>                         vcpu->arch.pc = curr_pc;
> -                       kvm_mips_emulate_tlbmiss_ld(cause, NULL, run, vcpu);
> +                       kvm_mips_emulate_tlbmiss_ld(cause, NULL, vcpu);
>                         return EMULATE_EXCEPT;
>                 case KVM_MIPS_TLBINV:
>                         /* invalid matching guest TLB */
>                         vcpu->arch.host_cp0_badvaddr = addr;
>                         vcpu->arch.pc = curr_pc;
> -                       kvm_mips_emulate_tlbinv_ld(cause, NULL, run, vcpu);
> +                       kvm_mips_emulate_tlbinv_ld(cause, NULL, vcpu);
>                         return EMULATE_EXCEPT;
>                 default:
>                         break;
> @@ -1796,7 +1794,6 @@ static enum emulation_result kvm_mips_guest_cache_op(int (*fn)(unsigned long),
>
>  enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
>                                              u32 *opc, u32 cause,
> -                                            struct kvm_run *run,
>                                              struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er = EMULATE_DONE;
> @@ -1886,7 +1883,7 @@ enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
>                  * guest's behalf.
>                  */
>                 er = kvm_mips_guest_cache_op(protected_writeback_dcache_line,
> -                                            curr_pc, va, run, vcpu, cause);
> +                                            curr_pc, va, vcpu, cause);
>                 if (er != EMULATE_DONE)
>                         goto done;
>  #ifdef CONFIG_KVM_MIPS_DYN_TRANS
> @@ -1899,11 +1896,11 @@ enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
>         } else if (op_inst == Hit_Invalidate_I) {
>                 /* Perform the icache synchronisation on the guest's behalf */
>                 er = kvm_mips_guest_cache_op(protected_writeback_dcache_line,
> -                                            curr_pc, va, run, vcpu, cause);
> +                                            curr_pc, va, vcpu, cause);
>                 if (er != EMULATE_DONE)
>                         goto done;
>                 er = kvm_mips_guest_cache_op(protected_flush_icache_line,
> -                                            curr_pc, va, run, vcpu, cause);
> +                                            curr_pc, va, vcpu, cause);
>                 if (er != EMULATE_DONE)
>                         goto done;
>
> @@ -1929,7 +1926,6 @@ enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
>  }
>
>  enum emulation_result kvm_mips_emulate_inst(u32 cause, u32 *opc,
> -                                           struct kvm_run *run,
>                                             struct kvm_vcpu *vcpu)
>  {
>         union mips_instruction inst;
> @@ -1945,14 +1941,14 @@ enum emulation_result kvm_mips_emulate_inst(u32 cause, u32 *opc,
>
>         switch (inst.r_format.opcode) {
>         case cop0_op:
> -               er = kvm_mips_emulate_CP0(inst, opc, cause, run, vcpu);
> +               er = kvm_mips_emulate_CP0(inst, opc, cause, vcpu);
>                 break;
>
>  #ifndef CONFIG_CPU_MIPSR6
>         case cache_op:
>                 ++vcpu->stat.cache_exits;
>                 trace_kvm_exit(vcpu, KVM_TRACE_EXIT_CACHE);
> -               er = kvm_mips_emulate_cache(inst, opc, cause, run, vcpu);
> +               er = kvm_mips_emulate_cache(inst, opc, cause, vcpu);
>                 break;
>  #else
>         case spec3_op:
> @@ -1960,7 +1956,7 @@ enum emulation_result kvm_mips_emulate_inst(u32 cause, u32 *opc,
>                 case cache6_op:
>                         ++vcpu->stat.cache_exits;
>                         trace_kvm_exit(vcpu, KVM_TRACE_EXIT_CACHE);
> -                       er = kvm_mips_emulate_cache(inst, opc, cause, run,
> +                       er = kvm_mips_emulate_cache(inst, opc, cause,
>                                                     vcpu);
>                         break;
>                 default:
> @@ -2000,7 +1996,6 @@ long kvm_mips_guest_exception_base(struct kvm_vcpu *vcpu)
>
>  enum emulation_result kvm_mips_emulate_syscall(u32 cause,
>                                                u32 *opc,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2035,7 +2030,6 @@ enum emulation_result kvm_mips_emulate_syscall(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_tlbmiss_ld(u32 cause,
>                                                   u32 *opc,
> -                                                 struct kvm_run *run,
>                                                   struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2079,7 +2073,6 @@ enum emulation_result kvm_mips_emulate_tlbmiss_ld(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_tlbinv_ld(u32 cause,
>                                                  u32 *opc,
> -                                                struct kvm_run *run,
>                                                  struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2121,7 +2114,6 @@ enum emulation_result kvm_mips_emulate_tlbinv_ld(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_tlbmiss_st(u32 cause,
>                                                   u32 *opc,
> -                                                 struct kvm_run *run,
>                                                   struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2163,7 +2155,6 @@ enum emulation_result kvm_mips_emulate_tlbmiss_st(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_tlbinv_st(u32 cause,
>                                                  u32 *opc,
> -                                                struct kvm_run *run,
>                                                  struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2204,7 +2195,6 @@ enum emulation_result kvm_mips_emulate_tlbinv_st(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_tlbmod(u32 cause,
>                                               u32 *opc,
> -                                             struct kvm_run *run,
>                                               struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2244,7 +2234,6 @@ enum emulation_result kvm_mips_emulate_tlbmod(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_fpu_exc(u32 cause,
>                                                u32 *opc,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2273,7 +2262,6 @@ enum emulation_result kvm_mips_emulate_fpu_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_ri_exc(u32 cause,
>                                               u32 *opc,
> -                                             struct kvm_run *run,
>                                               struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2308,7 +2296,6 @@ enum emulation_result kvm_mips_emulate_ri_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_bp_exc(u32 cause,
>                                               u32 *opc,
> -                                             struct kvm_run *run,
>                                               struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2343,7 +2330,6 @@ enum emulation_result kvm_mips_emulate_bp_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_trap_exc(u32 cause,
>                                                 u32 *opc,
> -                                               struct kvm_run *run,
>                                                 struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2378,7 +2364,6 @@ enum emulation_result kvm_mips_emulate_trap_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_msafpe_exc(u32 cause,
>                                                   u32 *opc,
> -                                                 struct kvm_run *run,
>                                                   struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2413,7 +2398,6 @@ enum emulation_result kvm_mips_emulate_msafpe_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_fpe_exc(u32 cause,
>                                                u32 *opc,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2448,7 +2432,6 @@ enum emulation_result kvm_mips_emulate_fpe_exc(u32 cause,
>
>  enum emulation_result kvm_mips_emulate_msadis_exc(u32 cause,
>                                                   u32 *opc,
> -                                                 struct kvm_run *run,
>                                                   struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2482,7 +2465,6 @@ enum emulation_result kvm_mips_emulate_msadis_exc(u32 cause,
>  }
>
>  enum emulation_result kvm_mips_handle_ri(u32 cause, u32 *opc,
> -                                        struct kvm_run *run,
>                                          struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -2571,12 +2553,12 @@ enum emulation_result kvm_mips_handle_ri(u32 cause, u32 *opc,
>          * branch target), and pass the RI exception to the guest OS.
>          */
>         vcpu->arch.pc = curr_pc;
> -       return kvm_mips_emulate_ri_exc(cause, opc, run, vcpu);
> +       return kvm_mips_emulate_ri_exc(cause, opc, vcpu);
>  }
>
> -enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
> -                                                 struct kvm_run *run)
> +enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu)
>  {
> +       struct kvm_run *run = vcpu->run;
>         unsigned long *gpr = &vcpu->arch.gprs[vcpu->arch.io_gpr];
>         enum emulation_result er = EMULATE_DONE;
>
> @@ -2622,7 +2604,6 @@ enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
>
>  static enum emulation_result kvm_mips_emulate_exc(u32 cause,
>                                                   u32 *opc,
> -                                                 struct kvm_run *run,
>                                                   struct kvm_vcpu *vcpu)
>  {
>         u32 exccode = (cause >> CAUSEB_EXCCODE) & 0x1f;
> @@ -2660,7 +2641,6 @@ static enum emulation_result kvm_mips_emulate_exc(u32 cause,
>
>  enum emulation_result kvm_mips_check_privilege(u32 cause,
>                                                u32 *opc,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er = EMULATE_DONE;
> @@ -2742,7 +2722,7 @@ enum emulation_result kvm_mips_check_privilege(u32 cause,
>         }
>
>         if (er == EMULATE_PRIV_FAIL)
> -               kvm_mips_emulate_exc(cause, opc, run, vcpu);
> +               kvm_mips_emulate_exc(cause, opc, vcpu);
>
>         return er;
>  }
> @@ -2756,7 +2736,6 @@ enum emulation_result kvm_mips_check_privilege(u32 cause,
>   */
>  enum emulation_result kvm_mips_handle_tlbmiss(u32 cause,
>                                               u32 *opc,
> -                                             struct kvm_run *run,
>                                               struct kvm_vcpu *vcpu,
>                                               bool write_fault)
>  {
> @@ -2780,9 +2759,9 @@ enum emulation_result kvm_mips_handle_tlbmiss(u32 cause,
>                        KVM_ENTRYHI_ASID));
>         if (index < 0) {
>                 if (exccode == EXCCODE_TLBL) {
> -                       er = kvm_mips_emulate_tlbmiss_ld(cause, opc, run, vcpu);
> +                       er = kvm_mips_emulate_tlbmiss_ld(cause, opc, vcpu);
>                 } else if (exccode == EXCCODE_TLBS) {
> -                       er = kvm_mips_emulate_tlbmiss_st(cause, opc, run, vcpu);
> +                       er = kvm_mips_emulate_tlbmiss_st(cause, opc, vcpu);
>                 } else {
>                         kvm_err("%s: invalid exc code: %d\n", __func__,
>                                 exccode);
> @@ -2797,10 +2776,10 @@ enum emulation_result kvm_mips_handle_tlbmiss(u32 cause,
>                  */
>                 if (!TLB_IS_VALID(*tlb, va)) {
>                         if (exccode == EXCCODE_TLBL) {
> -                               er = kvm_mips_emulate_tlbinv_ld(cause, opc, run,
> +                               er = kvm_mips_emulate_tlbinv_ld(cause, opc,
>                                                                 vcpu);
>                         } else if (exccode == EXCCODE_TLBS) {
> -                               er = kvm_mips_emulate_tlbinv_st(cause, opc, run,
> +                               er = kvm_mips_emulate_tlbinv_st(cause, opc,
>                                                                 vcpu);
>                         } else {
>                                 kvm_err("%s: invalid exc code: %d\n", __func__,
> diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
> index ec24adf4857e..9710477a9827 100644
> --- a/arch/mips/kvm/mips.c
> +++ b/arch/mips/kvm/mips.c
> @@ -441,7 +441,6 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
>
>  int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         int r = -EINTR;
>
>         vcpu_load(vcpu);
> @@ -450,11 +449,11 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
>
>         if (vcpu->mmio_needed) {
>                 if (!vcpu->mmio_is_write)
> -                       kvm_mips_complete_mmio_load(vcpu, run);
> +                       kvm_mips_complete_mmio_load(vcpu);
>                 vcpu->mmio_needed = 0;
>         }
>
> -       if (run->immediate_exit)
> +       if (vcpu->run->immediate_exit)
>                 goto out;
>
>         lose_fpu(1);
> @@ -471,7 +470,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
>          */
>         smp_store_mb(vcpu->mode, IN_GUEST_MODE);
>
> -       r = kvm_mips_callbacks->vcpu_run(run, vcpu);
> +       r = kvm_mips_callbacks->vcpu_run(vcpu);
>
>         trace_kvm_out(vcpu);
>         guest_exit_irqoff();
> @@ -1225,7 +1224,7 @@ int kvm_mips_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
>                  * end up causing an exception to be delivered to the Guest
>                  * Kernel
>                  */
> -               er = kvm_mips_check_privilege(cause, opc, run, vcpu);
> +               er = kvm_mips_check_privilege(cause, opc, vcpu);
>                 if (er == EMULATE_PRIV_FAIL) {
>                         goto skip_emul;
>                 } else if (er == EMULATE_FAIL) {
> @@ -1374,7 +1373,7 @@ int kvm_mips_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
>                  */
>                 smp_store_mb(vcpu->mode, IN_GUEST_MODE);
>
> -               kvm_mips_callbacks->vcpu_reenter(run, vcpu);
> +               kvm_mips_callbacks->vcpu_reenter(vcpu);
>
>                 /*
>                  * If FPU / MSA are enabled (i.e. the guest's FPU / MSA context
> diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
> index 5a11e83dffe6..d822f3aee3dc 100644
> --- a/arch/mips/kvm/trap_emul.c
> +++ b/arch/mips/kvm/trap_emul.c
> @@ -67,7 +67,6 @@ static int kvm_trap_emul_no_handler(struct kvm_vcpu *vcpu)
>  static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
> @@ -81,14 +80,14 @@ static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
>                          * Unusable/no FPU in guest:
>                          * deliver guest COP1 Unusable Exception
>                          */
> -                       er = kvm_mips_emulate_fpu_exc(cause, opc, run, vcpu);
> +                       er = kvm_mips_emulate_fpu_exc(cause, opc, vcpu);
>                 } else {
>                         /* Restore FPU state */
>                         kvm_own_fpu(vcpu);
>                         er = EMULATE_DONE;
>                 }
>         } else {
> -               er = kvm_mips_emulate_inst(cause, opc, run, vcpu);
> +               er = kvm_mips_emulate_inst(cause, opc, vcpu);
>         }
>
>         switch (er) {
> @@ -97,12 +96,12 @@ static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
>                 break;
>
>         case EMULATE_FAIL:
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>                 break;
>
>         case EMULATE_WAIT:
> -               run->exit_reason = KVM_EXIT_INTR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTR;
>                 ret = RESUME_HOST;
>                 break;
>
> @@ -116,8 +115,7 @@ static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
>         return ret;
>  }
>
> -static int kvm_mips_bad_load(u32 cause, u32 *opc, struct kvm_run *run,
> -                            struct kvm_vcpu *vcpu)
> +static int kvm_mips_bad_load(u32 cause, u32 *opc, struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er;
>         union mips_instruction inst;
> @@ -125,7 +123,7 @@ static int kvm_mips_bad_load(u32 cause, u32 *opc, struct kvm_run *run,
>
>         /* A code fetch fault doesn't count as an MMIO */
>         if (kvm_is_ifetch_fault(&vcpu->arch)) {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 return RESUME_HOST;
>         }
>
> @@ -134,23 +132,22 @@ static int kvm_mips_bad_load(u32 cause, u32 *opc, struct kvm_run *run,
>                 opc += 1;
>         err = kvm_get_badinstr(opc, vcpu, &inst.word);
>         if (err) {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 return RESUME_HOST;
>         }
>
>         /* Emulate the load */
> -       er = kvm_mips_emulate_load(inst, cause, run, vcpu);
> +       er = kvm_mips_emulate_load(inst, cause, vcpu);
>         if (er == EMULATE_FAIL) {
>                 kvm_err("Emulate load from MMIO space failed\n");
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>         } else {
> -               run->exit_reason = KVM_EXIT_MMIO;
> +               vcpu->run->exit_reason = KVM_EXIT_MMIO;
>         }
>         return RESUME_HOST;
>  }
>
> -static int kvm_mips_bad_store(u32 cause, u32 *opc, struct kvm_run *run,
> -                             struct kvm_vcpu *vcpu)
> +static int kvm_mips_bad_store(u32 cause, u32 *opc, struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er;
>         union mips_instruction inst;
> @@ -161,34 +158,33 @@ static int kvm_mips_bad_store(u32 cause, u32 *opc, struct kvm_run *run,
>                 opc += 1;
>         err = kvm_get_badinstr(opc, vcpu, &inst.word);
>         if (err) {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 return RESUME_HOST;
>         }
>
>         /* Emulate the store */
> -       er = kvm_mips_emulate_store(inst, cause, run, vcpu);
> +       er = kvm_mips_emulate_store(inst, cause, vcpu);
>         if (er == EMULATE_FAIL) {
>                 kvm_err("Emulate store to MMIO space failed\n");
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>         } else {
> -               run->exit_reason = KVM_EXIT_MMIO;
> +               vcpu->run->exit_reason = KVM_EXIT_MMIO;
>         }
>         return RESUME_HOST;
>  }
>
> -static int kvm_mips_bad_access(u32 cause, u32 *opc, struct kvm_run *run,
> +static int kvm_mips_bad_access(u32 cause, u32 *opc,
>                                struct kvm_vcpu *vcpu, bool store)
>  {
>         if (store)
> -               return kvm_mips_bad_store(cause, opc, run, vcpu);
> +               return kvm_mips_bad_store(cause, opc, vcpu);
>         else
> -               return kvm_mips_bad_load(cause, opc, run, vcpu);
> +               return kvm_mips_bad_load(cause, opc, vcpu);
>  }
>
>  static int kvm_trap_emul_handle_tlb_mod(struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         unsigned long badvaddr = vcpu->arch.host_cp0_badvaddr;
>         u32 cause = vcpu->arch.host_cp0_cause;
> @@ -212,12 +208,12 @@ static int kvm_trap_emul_handle_tlb_mod(struct kvm_vcpu *vcpu)
>                  * They would indicate stale host TLB entries.
>                  */
>                 if (unlikely(index < 0)) {
> -                       run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +                       vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                         return RESUME_HOST;
>                 }
>                 tlb = vcpu->arch.guest_tlb + index;
>                 if (unlikely(!TLB_IS_VALID(*tlb, badvaddr))) {
> -                       run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +                       vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                         return RESUME_HOST;
>                 }
>
> @@ -226,23 +222,23 @@ static int kvm_trap_emul_handle_tlb_mod(struct kvm_vcpu *vcpu)
>                  * exception. Relay that on to the guest so it can handle it.
>                  */
>                 if (!TLB_IS_DIRTY(*tlb, badvaddr)) {
> -                       kvm_mips_emulate_tlbmod(cause, opc, run, vcpu);
> +                       kvm_mips_emulate_tlbmod(cause, opc, vcpu);
>                         return RESUME_GUEST;
>                 }
>
>                 if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb, badvaddr,
>                                                          true))
>                         /* Not writable, needs handling as MMIO */
> -                       return kvm_mips_bad_store(cause, opc, run, vcpu);
> +                       return kvm_mips_bad_store(cause, opc, vcpu);
>                 return RESUME_GUEST;
>         } else if (KVM_GUEST_KSEGX(badvaddr) == KVM_GUEST_KSEG0) {
>                 if (kvm_mips_handle_kseg0_tlb_fault(badvaddr, vcpu, true) < 0)
>                         /* Not writable, needs handling as MMIO */
> -                       return kvm_mips_bad_store(cause, opc, run, vcpu);
> +                       return kvm_mips_bad_store(cause, opc, vcpu);
>                 return RESUME_GUEST;
>         } else {
>                 /* host kernel addresses are all handled as MMIO */
> -               return kvm_mips_bad_store(cause, opc, run, vcpu);
> +               return kvm_mips_bad_store(cause, opc, vcpu);
>         }
>  }
>
> @@ -276,7 +272,7 @@ static int kvm_trap_emul_handle_tlb_miss(struct kvm_vcpu *vcpu, bool store)
>                  *     into the shadow host TLB
>                  */
>
> -               er = kvm_mips_handle_tlbmiss(cause, opc, run, vcpu, store);
> +               er = kvm_mips_handle_tlbmiss(cause, opc, vcpu, store);
>                 if (er == EMULATE_DONE)
>                         ret = RESUME_GUEST;
>                 else {
> @@ -289,14 +285,14 @@ static int kvm_trap_emul_handle_tlb_miss(struct kvm_vcpu *vcpu, bool store)
>                  * not expect to ever get them
>                  */
>                 if (kvm_mips_handle_kseg0_tlb_fault(badvaddr, vcpu, store) < 0)
> -                       ret = kvm_mips_bad_access(cause, opc, run, vcpu, store);
> +                       ret = kvm_mips_bad_access(cause, opc, vcpu, store);
>         } else if (KVM_GUEST_KERNEL_MODE(vcpu)
>                    && (KSEGX(badvaddr) == CKSEG0 || KSEGX(badvaddr) == CKSEG1)) {
>                 /*
>                  * With EVA we may get a TLB exception instead of an address
>                  * error when the guest performs MMIO to KSeg1 addresses.
>                  */
> -               ret = kvm_mips_bad_access(cause, opc, run, vcpu, store);
> +               ret = kvm_mips_bad_access(cause, opc, vcpu, store);
>         } else {
>                 kvm_err("Illegal TLB %s fault address , cause %#x, PC: %p, BadVaddr: %#lx\n",
>                         store ? "ST" : "LD", cause, opc, badvaddr);
> @@ -320,7 +316,6 @@ static int kvm_trap_emul_handle_tlb_ld_miss(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_addr_err_st(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         unsigned long badvaddr = vcpu->arch.host_cp0_badvaddr;
>         u32 cause = vcpu->arch.host_cp0_cause;
> @@ -328,11 +323,11 @@ static int kvm_trap_emul_handle_addr_err_st(struct kvm_vcpu *vcpu)
>
>         if (KVM_GUEST_KERNEL_MODE(vcpu)
>             && (KSEGX(badvaddr) == CKSEG0 || KSEGX(badvaddr) == CKSEG1)) {
> -               ret = kvm_mips_bad_store(cause, opc, run, vcpu);
> +               ret = kvm_mips_bad_store(cause, opc, vcpu);
>         } else {
>                 kvm_err("Address Error (STORE): cause %#x, PC: %p, BadVaddr: %#lx\n",
>                         cause, opc, badvaddr);
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -340,18 +335,17 @@ static int kvm_trap_emul_handle_addr_err_st(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_addr_err_ld(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         unsigned long badvaddr = vcpu->arch.host_cp0_badvaddr;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         int ret = RESUME_GUEST;
>
>         if (KSEGX(badvaddr) == CKSEG0 || KSEGX(badvaddr) == CKSEG1) {
> -               ret = kvm_mips_bad_load(cause, opc, run, vcpu);
> +               ret = kvm_mips_bad_load(cause, opc, vcpu);
>         } else {
>                 kvm_err("Address Error (LOAD): cause %#x, PC: %p, BadVaddr: %#lx\n",
>                         cause, opc, badvaddr);
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -359,17 +353,16 @@ static int kvm_trap_emul_handle_addr_err_ld(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_syscall(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_emulate_syscall(cause, opc, run, vcpu);
> +       er = kvm_mips_emulate_syscall(cause, opc, vcpu);
>         if (er == EMULATE_DONE)
>                 ret = RESUME_GUEST;
>         else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -377,17 +370,16 @@ static int kvm_trap_emul_handle_syscall(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_res_inst(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_handle_ri(cause, opc, run, vcpu);
> +       er = kvm_mips_handle_ri(cause, opc, vcpu);
>         if (er == EMULATE_DONE)
>                 ret = RESUME_GUEST;
>         else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -395,17 +387,16 @@ static int kvm_trap_emul_handle_res_inst(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_break(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_emulate_bp_exc(cause, opc, run, vcpu);
> +       er = kvm_mips_emulate_bp_exc(cause, opc, vcpu);
>         if (er == EMULATE_DONE)
>                 ret = RESUME_GUEST;
>         else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -413,17 +404,16 @@ static int kvm_trap_emul_handle_break(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_trap(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *)vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_emulate_trap_exc(cause, opc, run, vcpu);
> +       er = kvm_mips_emulate_trap_exc(cause, opc, vcpu);
>         if (er == EMULATE_DONE) {
>                 ret = RESUME_GUEST;
>         } else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -431,17 +421,16 @@ static int kvm_trap_emul_handle_trap(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_msa_fpe(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *)vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_emulate_msafpe_exc(cause, opc, run, vcpu);
> +       er = kvm_mips_emulate_msafpe_exc(cause, opc, vcpu);
>         if (er == EMULATE_DONE) {
>                 ret = RESUME_GUEST;
>         } else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -449,17 +438,16 @@ static int kvm_trap_emul_handle_msa_fpe(struct kvm_vcpu *vcpu)
>
>  static int kvm_trap_emul_handle_fpe(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *)vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
>         int ret = RESUME_GUEST;
>
> -       er = kvm_mips_emulate_fpe_exc(cause, opc, run, vcpu);
> +       er = kvm_mips_emulate_fpe_exc(cause, opc, vcpu);
>         if (er == EMULATE_DONE) {
>                 ret = RESUME_GUEST;
>         } else {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>         }
>         return ret;
> @@ -474,7 +462,6 @@ static int kvm_trap_emul_handle_fpe(struct kvm_vcpu *vcpu)
>  static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> -       struct kvm_run *run = vcpu->run;
>         u32 __user *opc = (u32 __user *) vcpu->arch.pc;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_DONE;
> @@ -486,10 +473,10 @@ static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu)
>                  * No MSA in guest, or FPU enabled and not in FR=1 mode,
>                  * guest reserved instruction exception
>                  */
> -               er = kvm_mips_emulate_ri_exc(cause, opc, run, vcpu);
> +               er = kvm_mips_emulate_ri_exc(cause, opc, vcpu);
>         } else if (!(kvm_read_c0_guest_config5(cop0) & MIPS_CONF5_MSAEN)) {
>                 /* MSA disabled by guest, guest MSA disabled exception */
> -               er = kvm_mips_emulate_msadis_exc(cause, opc, run, vcpu);
> +               er = kvm_mips_emulate_msadis_exc(cause, opc, vcpu);
>         } else {
>                 /* Restore MSA/FPU state */
>                 kvm_own_msa(vcpu);
> @@ -502,7 +489,7 @@ static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu)
>                 break;
>
>         case EMULATE_FAIL:
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>                 break;
>
> @@ -1181,8 +1168,7 @@ void kvm_trap_emul_gva_lockless_end(struct kvm_vcpu *vcpu)
>         local_irq_enable();
>  }
>
> -static void kvm_trap_emul_vcpu_reenter(struct kvm_run *run,
> -                                      struct kvm_vcpu *vcpu)
> +static void kvm_trap_emul_vcpu_reenter(struct kvm_vcpu *vcpu)
>  {
>         struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
>         struct mm_struct *user_mm = &vcpu->arch.guest_user_mm;
> @@ -1225,7 +1211,7 @@ static void kvm_trap_emul_vcpu_reenter(struct kvm_run *run,
>         check_mmu_context(mm);
>  }
>
> -static int kvm_trap_emul_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
> +static int kvm_trap_emul_vcpu_run(struct kvm_vcpu *vcpu)
>  {
>         int cpu = smp_processor_id();
>         int r;
> @@ -1234,7 +1220,7 @@ static int kvm_trap_emul_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
>         kvm_mips_deliver_interrupts(vcpu,
>                                     kvm_read_c0_guest_cause(vcpu->arch.cop0));
>
> -       kvm_trap_emul_vcpu_reenter(run, vcpu);
> +       kvm_trap_emul_vcpu_reenter(vcpu);
>
>         /*
>          * We use user accessors to access guest memory, but we don't want to
> @@ -1252,7 +1238,7 @@ static int kvm_trap_emul_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
>          */
>         kvm_mips_suspend_mm(cpu);
>
> -       r = vcpu->arch.vcpu_run(run, vcpu);
> +       r = vcpu->arch.vcpu_run(vcpu->run, vcpu);
>
>         /* We may have migrated while handling guest exits */
>         cpu = smp_processor_id();
> diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
> index dde20887a70d..94f1d23828e3 100644
> --- a/arch/mips/kvm/vz.c
> +++ b/arch/mips/kvm/vz.c
> @@ -899,7 +899,6 @@ static void kvm_write_maari(struct kvm_vcpu *vcpu, unsigned long val)
>
>  static enum emulation_result kvm_vz_gpsi_cop0(union mips_instruction inst,
>                                               u32 *opc, u32 cause,
> -                                             struct kvm_run *run,
>                                               struct kvm_vcpu *vcpu)
>  {
>         struct mips_coproc *cop0 = vcpu->arch.cop0;
> @@ -1062,7 +1061,6 @@ static enum emulation_result kvm_vz_gpsi_cop0(union mips_instruction inst,
>
>  static enum emulation_result kvm_vz_gpsi_cache(union mips_instruction inst,
>                                                u32 *opc, u32 cause,
> -                                              struct kvm_run *run,
>                                                struct kvm_vcpu *vcpu)
>  {
>         enum emulation_result er = EMULATE_DONE;
> @@ -1134,7 +1132,6 @@ static enum emulation_result kvm_trap_vz_handle_gpsi(u32 cause, u32 *opc,
>  {
>         enum emulation_result er = EMULATE_DONE;
>         struct kvm_vcpu_arch *arch = &vcpu->arch;
> -       struct kvm_run *run = vcpu->run;
>         union mips_instruction inst;
>         int rd, rt, sel;
>         int err;
> @@ -1150,12 +1147,12 @@ static enum emulation_result kvm_trap_vz_handle_gpsi(u32 cause, u32 *opc,
>
>         switch (inst.r_format.opcode) {
>         case cop0_op:
> -               er = kvm_vz_gpsi_cop0(inst, opc, cause, run, vcpu);
> +               er = kvm_vz_gpsi_cop0(inst, opc, cause, vcpu);
>                 break;
>  #ifndef CONFIG_CPU_MIPSR6
>         case cache_op:
>                 trace_kvm_exit(vcpu, KVM_TRACE_EXIT_CACHE);
> -               er = kvm_vz_gpsi_cache(inst, opc, cause, run, vcpu);
> +               er = kvm_vz_gpsi_cache(inst, opc, cause, vcpu);
>                 break;
>  #endif
>         case spec3_op:
> @@ -1163,7 +1160,7 @@ static enum emulation_result kvm_trap_vz_handle_gpsi(u32 cause, u32 *opc,
>  #ifdef CONFIG_CPU_MIPSR6
>                 case cache6_op:
>                         trace_kvm_exit(vcpu, KVM_TRACE_EXIT_CACHE);
> -                       er = kvm_vz_gpsi_cache(inst, opc, cause, run, vcpu);
> +                       er = kvm_vz_gpsi_cache(inst, opc, cause, vcpu);
>                         break;
>  #endif
>                 case rdhwr_op:
> @@ -1465,7 +1462,6 @@ static int kvm_trap_vz_handle_guest_exit(struct kvm_vcpu *vcpu)
>   */
>  static int kvm_trap_vz_handle_cop_unusable(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
>         u32 cause = vcpu->arch.host_cp0_cause;
>         enum emulation_result er = EMULATE_FAIL;
>         int ret = RESUME_GUEST;
> @@ -1493,7 +1489,7 @@ static int kvm_trap_vz_handle_cop_unusable(struct kvm_vcpu *vcpu)
>                 break;
>
>         case EMULATE_FAIL:
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 ret = RESUME_HOST;
>                 break;
>
> @@ -1512,8 +1508,6 @@ static int kvm_trap_vz_handle_cop_unusable(struct kvm_vcpu *vcpu)
>   */
>  static int kvm_trap_vz_handle_msa_disabled(struct kvm_vcpu *vcpu)
>  {
> -       struct kvm_run *run = vcpu->run;
> -
>         /*
>          * If MSA not present or not exposed to guest or FR=0, the MSA operation
>          * should have been treated as a reserved instruction!
> @@ -1524,7 +1518,7 @@ static int kvm_trap_vz_handle_msa_disabled(struct kvm_vcpu *vcpu)
>             (read_gc0_status() & (ST0_CU1 | ST0_FR)) == ST0_CU1 ||
>             !(read_gc0_config5() & MIPS_CONF5_MSAEN) ||
>             vcpu->arch.aux_inuse & KVM_MIPS_AUX_MSA) {
> -               run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
> +               vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
>                 return RESUME_HOST;
>         }
>
> @@ -1560,7 +1554,7 @@ static int kvm_trap_vz_handle_tlb_ld_miss(struct kvm_vcpu *vcpu)
>                 }
>
>                 /* Treat as MMIO */
> -               er = kvm_mips_emulate_load(inst, cause, run, vcpu);
> +               er = kvm_mips_emulate_load(inst, cause, vcpu);
>                 if (er == EMULATE_FAIL) {
>                         kvm_err("Guest Emulate Load from MMIO space failed: PC: %p, BadVaddr: %#lx\n",
>                                 opc, badvaddr);
> @@ -1607,7 +1601,7 @@ static int kvm_trap_vz_handle_tlb_st_miss(struct kvm_vcpu *vcpu)
>                 }
>
>                 /* Treat as MMIO */
> -               er = kvm_mips_emulate_store(inst, cause, run, vcpu);
> +               er = kvm_mips_emulate_store(inst, cause, vcpu);
>                 if (er == EMULATE_FAIL) {
>                         kvm_err("Guest Emulate Store to MMIO space failed: PC: %p, BadVaddr: %#lx\n",
>                                 opc, badvaddr);
> @@ -3129,7 +3123,7 @@ static void kvm_vz_flush_shadow_memslot(struct kvm *kvm,
>         kvm_vz_flush_shadow_all(kvm);
>  }
>
> -static void kvm_vz_vcpu_reenter(struct kvm_run *run, struct kvm_vcpu *vcpu)
> +static void kvm_vz_vcpu_reenter(struct kvm_vcpu *vcpu)
>  {
>         int cpu = smp_processor_id();
>         int preserve_guest_tlb;
> @@ -3145,7 +3139,7 @@ static void kvm_vz_vcpu_reenter(struct kvm_run *run, struct kvm_vcpu *vcpu)
>                 kvm_vz_vcpu_load_wired(vcpu);
>  }
>
> -static int kvm_vz_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
> +static int kvm_vz_vcpu_run(struct kvm_vcpu *vcpu)
>  {
>         int cpu = smp_processor_id();
>         int r;
> @@ -3158,7 +3152,7 @@ static int kvm_vz_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
>         kvm_vz_vcpu_load_tlb(vcpu, cpu);
>         kvm_vz_vcpu_load_wired(vcpu);
>
> -       r = vcpu->arch.vcpu_run(run, vcpu);
> +       r = vcpu->arch.vcpu_run(vcpu->run, vcpu);
>
>         kvm_vz_vcpu_save_wired(vcpu);
>
> --
> 2.17.1
>

On 2020/4/27 13:40, Huacai Chen wrote:
> Reviewed-by: Huacai Chen <chenhc@lemote.com>
> 
> On Mon, Apr 27, 2020 at 12:35 PM Tianjia Zhang
> <tianjia.zhang@linux.alibaba.com> wrote:
>>
>> In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu'
>> structure. For historical reasons, many kvm-related function parameters
>> retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. This
>> patch does a unified cleanup of these remaining redundant parameters.
>>
>> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
>> ---
>>   arch/mips/include/asm/kvm_host.h |  28 +-------
>>   arch/mips/kvm/emulate.c          |  59 ++++++----------
>>   arch/mips/kvm/mips.c             |  11 ++-
>>   arch/mips/kvm/trap_emul.c        | 114 ++++++++++++++-----------------
>>   arch/mips/kvm/vz.c               |  26 +++----
>>   5 files changed, 87 insertions(+), 151 deletions(-)
>>

Hi Huacai,

These two patches(6/7 and 7/7) should be merged into the tree of the 
mips architecture separately. At present, there seems to be no good way 
to merge the whole architecture patchs.

For this series of patches, some architectures have been merged, some 
need to update the patch.

Thanks and best,
Tianjia

On 27/05/20 08:24, Tianjia Zhang wrote:
>>>
>>>
> 
> Hi Huacai,
> 
> These two patches(6/7 and 7/7) should be merged into the tree of the
> mips architecture separately. At present, there seems to be no good way
> to merge the whole architecture patchs.
> 
> For this series of patches, some architectures have been merged, some
> need to update the patch.

Hi Tianjia, I will take care of this during the merge window.

Thanks,

Paolo

On 2020/5/29 17:48, Paolo Bonzini wrote:
> On 27/05/20 08:24, Tianjia Zhang wrote:
>>>>
>>>>
>>
>> Hi Huacai,
>>
>> These two patches(6/7 and 7/7) should be merged into the tree of the
>> mips architecture separately. At present, there seems to be no good way
>> to merge the whole architecture patchs.
>>
>> For this series of patches, some architectures have been merged, some
>> need to update the patch.
> 
> Hi Tianjia, I will take care of this during the merge window.
> 
> Thanks,
> 
> Paolo
> 

Hi Paolo,

The following individual patch is the v5 version of 5/7 in this group of 
patches.

https://lkml.org/lkml/2020/5/28/106
([v5] KVM: PPC: clean up redundant kvm_run parameters in assembly)

Thanks and best,
Tianjia