From: Simon Guo <wei.guo.simon@xxxxxxxxx>
In both HV/PR KVM, the KVM_SET_REGS/KVM_GET_REGS ioctl should
be able to perform without load vcpu. This patch adds
KVM_SET_ONE_REG/KVM_GET_ONE_REG implementation to async ioctl
function.
Due to the vcpu mutex locking/unlock has been moved out of vcpu_load()
/vcpu_put(), KVM_SET_REGS/KVM_GET_REGS don't need to do
ioctl with loading vcpu anymore. This patch removes vcpu_load()/vcpu_put()
from KVM_SET_REGS/KVM_GET_REGS ioctl.
Signed-off-by: Simon Guo <wei.guo.simon@xxxxxxxxx>
---
arch/powerpc/kvm/book3s.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 97d4a11..523c68f 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -509,8 +509,6 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
int i;
- vcpu_load(vcpu);
-
regs->pc = kvmppc_get_pc(vcpu);
regs->cr = kvmppc_get_cr(vcpu);
regs->ctr = kvmppc_get_ctr(vcpu);
@@ -532,7 +530,6 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
- vcpu_put(vcpu);
return 0;
}
@@ -540,8 +537,6 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
int i;
- vcpu_load(vcpu);
-
kvmppc_set_pc(vcpu, regs->pc);
kvmppc_set_cr(vcpu, regs->cr);
kvmppc_set_ctr(vcpu, regs->ctr);
@@ -562,7 +557,6 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
- vcpu_put(vcpu);
return 0;
}
--
1.8.3.1
