[PATCH v4 1/7] KVM: s390: clean up redundant 'kvm_run' parameters

[Tianjia Zhang]

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.zh...@linux.alibaba.com>
---
 arch/s390/kvm/kvm-s390.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index e335a7e5ead7..c0d94eaa00d7 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -4176,8 +4176,9 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
        return rc;
 }
 
-static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+static void sync_regs_fmt2(struct kvm_vcpu *vcpu)
 {
+       struct kvm_run *kvm_run = vcpu->run;
        struct runtime_instr_cb *riccb;
        struct gs_cb *gscb;
 
@@ -4243,8 +4244,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct 
kvm_run *kvm_run)
        /* SIE will load etoken directly from SDNX and therefore kvm_run */
 }
 
-static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+static void sync_regs(struct kvm_vcpu *vcpu)
 {
+       struct kvm_run *kvm_run = vcpu->run;
+
        if (kvm_run->kvm_dirty_regs & KVM_SYNC_PREFIX)
                kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix);
        if (kvm_run->kvm_dirty_regs & KVM_SYNC_CRS) {
@@ -4273,7 +4276,7 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct 
kvm_run *kvm_run)
 
        /* Sync fmt2 only data */
        if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) {
-               sync_regs_fmt2(vcpu, kvm_run);
+               sync_regs_fmt2(vcpu);
        } else {
                /*
                 * In several places we have to modify our internal view to
@@ -4292,8 +4295,10 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct 
kvm_run *kvm_run)
        kvm_run->kvm_dirty_regs = 0;
 }
 
-static void store_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+static void store_regs_fmt2(struct kvm_vcpu *vcpu)
 {
+       struct kvm_run *kvm_run = vcpu->run;
+
        kvm_run->s.regs.todpr = vcpu->arch.sie_block->todpr;
        kvm_run->s.regs.pp = vcpu->arch.sie_block->pp;
        kvm_run->s.regs.gbea = vcpu->arch.sie_block->gbea;
@@ -4313,8 +4318,10 @@ static void store_regs_fmt2(struct kvm_vcpu *vcpu, 
struct kvm_run *kvm_run)
        /* SIE will save etoken directly into SDNX and therefore kvm_run */
 }
 
-static void store_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+static void store_regs(struct kvm_vcpu *vcpu)
 {
+       struct kvm_run *kvm_run = vcpu->run;
+
        kvm_run->psw_mask = vcpu->arch.sie_block->gpsw.mask;
        kvm_run->psw_addr = vcpu->arch.sie_block->gpsw.addr;
        kvm_run->s.regs.prefix = kvm_s390_get_prefix(vcpu);
@@ -4333,7 +4340,7 @@ static void store_regs(struct kvm_vcpu *vcpu, struct 
kvm_run *kvm_run)
        current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc;
        current->thread.fpu.regs = vcpu->arch.host_fpregs.regs;
        if (likely(!kvm_s390_pv_cpu_is_protected(vcpu)))
-               store_regs_fmt2(vcpu, kvm_run);
+               store_regs_fmt2(vcpu);
 }
 
 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
@@ -4371,7 +4378,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
                goto out;
        }
 
-       sync_regs(vcpu, kvm_run);
+       sync_regs(vcpu);
        enable_cpu_timer_accounting(vcpu);
 
        might_fault();
@@ -4393,7 +4400,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
        }
 
        disable_cpu_timer_accounting(vcpu);
-       store_regs(vcpu, kvm_run);
+       store_regs(vcpu);
 
        kvm_sigset_deactivate(vcpu);
 
-- 
2.17.1