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OpenCloudOS-Kernel
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KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_run 

Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_run().

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> # s390 parts
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[Rebased. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Christoffer Dall 2017-12-04 21:35:25 +01:00 committed by Paolo Bonzini
parent 8a32dd60ec
commit accb757d79
6 changed files with 32 additions and 12 deletions
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3
arch/mips/kvm/mips.c
View File

@ -446,6 +446,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
int r = -EINTR;
vcpu_load(vcpu);
kvm_sigset_activate(vcpu);
if (vcpu->mmio_needed) {
@ -480,6 +482,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
out:
kvm_sigset_deactivate(vcpu);
vcpu_put(vcpu);
return r;
}

6
arch/powerpc/kvm/powerpc.c
View File

@ -1408,6 +1408,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
int r;
vcpu_load(vcpu);
if (vcpu->mmio_needed) {
vcpu->mmio_needed = 0;
if (!vcpu->mmio_is_write)
@ -1422,7 +1424,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
r = kvmppc_emulate_mmio_vsx_loadstore(vcpu, run);
if (r == RESUME_HOST) {
vcpu->mmio_needed = 1;
return r;
goto out;
}
}
#endif
@ -1456,6 +1458,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
kvm_sigset_deactivate(vcpu);
out:
vcpu_put(vcpu);
return r;
}

10
arch/s390/kvm/kvm-s390.c
View File

@ -3373,9 +3373,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (kvm_run->immediate_exit)
return -EINTR;
vcpu_load(vcpu);
if (guestdbg_exit_pending(vcpu)) {
kvm_s390_prepare_debug_exit(vcpu);
return 0;
rc = 0;
goto out;
}
kvm_sigset_activate(vcpu);
@ -3385,7 +3388,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
} else if (is_vcpu_stopped(vcpu)) {
pr_err_ratelimited("can't run stopped vcpu %d\n",
vcpu->vcpu_id);
return -EINVAL;
rc = -EINVAL;
goto out;
}
sync_regs(vcpu, kvm_run);
@ -3415,6 +3419,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
kvm_sigset_deactivate(vcpu);
vcpu->stat.exit_userspace++;
out:
vcpu_put(vcpu);
return rc;
}

3
arch/x86/kvm/x86.c
View File

@ -7280,8 +7280,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
int r;
vcpu_load(vcpu);
kvm_sigset_activate(vcpu);
kvm_load_guest_fpu(vcpu);
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
@ -7328,6 +7328,7 @@ out:
post_kvm_run_save(vcpu);
kvm_sigset_deactivate(vcpu);
vcpu_put(vcpu);
return r;
}

20
virt/kvm/arm/arm.c
View File

@ -619,21 +619,27 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
if (unlikely(!kvm_vcpu_initialized(vcpu)))
return -ENOEXEC;
vcpu_load(vcpu);
ret = kvm_vcpu_first_run_init(vcpu);
if (ret)
return ret;
goto out;
if (run->exit_reason == KVM_EXIT_MMIO) {
ret = kvm_handle_mmio_return(vcpu, vcpu->run);
if (ret)
return ret;
if (kvm_arm_handle_step_debug(vcpu, vcpu->run))
return 0;
goto out;
if (kvm_arm_handle_step_debug(vcpu, vcpu->run)) {
ret = 0;
goto out;
}
}
if (run->immediate_exit)
return -EINTR;
if (run->immediate_exit) {
ret = -EINTR;
goto out;
}
kvm_sigset_activate(vcpu);
@ -772,6 +778,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
kvm_sigset_deactivate(vcpu);
out:
vcpu_put(vcpu);
return ret;
}

2
virt/kvm/kvm_main.c
View File

@ -2562,7 +2562,6 @@ static long kvm_vcpu_ioctl(struct file *filp,
r = -EINVAL;
if (arg)
goto out;
vcpu_load(vcpu);
oldpid = rcu_access_pointer(vcpu->pid);
if (unlikely(oldpid != current->pids[PIDTYPE_PID].pid)) {
/* The thread running this VCPU changed. */
@ -2574,7 +2573,6 @@ static long kvm_vcpu_ioctl(struct file *filp,
put_pid(oldpid);
}
r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run);
vcpu_put(vcpu);
trace_kvm_userspace_exit(vcpu->run->exit_reason, r);
break;
}