AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-14 08:06:41 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S HV: Cosmetic post-merge cleanups

Browse Source 
This rearranges the code in kvmppc_run_vcpu() and kvmppc_run_vcpu_hv()
to be neater and clearer.  Deeply indented code in kvmppc_run_vcpu()
is moved out to a helper function, kvmhv_setup_mmu().  In
kvmppc_vcpu_run_hv(), make use of the existing variable 'kvm' in
place of 'vcpu->kvm'.

No functional change.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras 2017-11-09 15:37:10 +11:00
parent 072df8130c
commit 432953b445
1 changed files with 25 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
arch/powerpc/kvm/book3s_hv.c
View File

@ -3120,6 +3120,25 @@ static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc)
trace_kvmppc_vcore_wakeup(do_sleep, block_ns);
}
static int kvmhv_setup_mmu(struct kvm_vcpu *vcpu)
{
int r = 0;
struct kvm *kvm = vcpu->kvm;
mutex_lock(&kvm->lock);
if (!kvm->arch.mmu_ready) {
if (!kvm_is_radix(kvm))
r = kvmppc_hv_setup_htab_rma(vcpu);
if (!r) {
if (cpu_has_feature(CPU_FTR_ARCH_300))
kvmppc_setup_partition_table(kvm);
kvm->arch.mmu_ready = 1;
}
}
mutex_unlock(&kvm->lock);
return r;
}
static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
int n_ceded, i, r;
@ -3179,22 +3198,12 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
/* See if the MMU is ready to go */
if (!vcpu->kvm->arch.mmu_ready) {
spin_unlock(&vc->lock);
mutex_lock(&vcpu->kvm->lock);
r = 0;
if (!vcpu->kvm->arch.mmu_ready) {
if (!kvm_is_radix(vcpu->kvm))
r = kvmppc_hv_setup_htab_rma(vcpu);
if (!r) {
if (cpu_has_feature(CPU_FTR_ARCH_300))
kvmppc_setup_partition_table(vcpu->kvm);
vcpu->kvm->arch.mmu_ready = 1;
}
}
mutex_unlock(&vcpu->kvm->lock);
r = kvmhv_setup_mmu(vcpu);
spin_lock(&vc->lock);
if (r) {
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason = 0;
kvm_run->fail_entry.
hardware_entry_failure_reason = 0;
vcpu->arch.ret = r;
break;
}
@ -3344,10 +3353,10 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
trace_kvm_hcall_exit(vcpu, r);
kvmppc_core_prepare_to_enter(vcpu);
} else if (r == RESUME_PAGE_FAULT) {
srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
srcu_idx = srcu_read_lock(&kvm->srcu);
r = kvmppc_book3s_hv_page_fault(run, vcpu,
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
srcu_read_unlock(&kvm->srcu, srcu_idx);
} else if (r == RESUME_PASSTHROUGH) {
if (WARN_ON(xive_enabled()))
r = H_SUCCESS;
@ -3367,7 +3376,7 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
mtspr(SPRN_VRSAVE, user_vrsave);
vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
atomic_dec(&vcpu->kvm->arch.vcpus_running);
atomic_dec(&kvm->arch.vcpus_running);
return r;
}