From: Simon Guo <wei.guo.simon@gmail.com>
Date: Wed, 23 May 2018 07:02:10 +0000 (+0800)
Subject: KVM: PPC: Remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c8235c2891d0561960fd5d62fdda58cfb6e503b2;p=linux.git

KVM: PPC: Remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl

Since the vcpu mutex locking/unlock has been moved out of vcpu_load()
/vcpu_put(), KVM_GET_ONE_REG and KVM_SET_ONE_REG doesn't need to do
ioctl with loading vcpu anymore. This patch removes vcpu_load()/vcpu_put()
from KVM_GET_ONE_REG and KVM_SET_ONE_REG ioctl.

Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
---

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index c2c3477af746f..4cb377605167c 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1998,14 +1998,12 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
 	{
 		struct kvm_one_reg reg;
 		r = -EFAULT;
-		vcpu_load(vcpu);
 		if (copy_from_user(&reg, argp, sizeof(reg)))
 			goto out;
 		if (ioctl == KVM_SET_ONE_REG)
 			r = kvm_vcpu_ioctl_set_one_reg(vcpu, &reg);
 		else
 			r = kvm_vcpu_ioctl_get_one_reg(vcpu, &reg);
-		vcpu_put(vcpu);
 		break;
 	}