[v2,28/30] KVM: PPC: remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS

Message ID 1519753958-11756-18-git-send-email-wei.guo.simon@gmail.com
State Changes Requested
Headers show
Series
  • Untitled series #30815
Related show

Commit Message

Simon Guo Feb. 27, 2018, 5:52 p.m.
From: Simon Guo <wei.guo.simon@gmail.com>

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@gmail.com>
---
 arch/powerpc/kvm/book3s.c | 6 ------
 1 file changed, 6 deletions(-)

Patch

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 234531d..10b2a21 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;
 }