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KVM: PPC: Load VCPU for register fetching

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When trying to read or store vcpu register data, we should also make
sure the vcpu is actually loaded, so we're 100% sure we get the correct
values.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf 2010-03-24 21:48:23 +01:00 • committed by Avi Kivity
parent c2453693d4
commit a56cf347c2
1 changed files with 8 additions and 0 deletions
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8
arch/powerpc/kvm/book3s.c
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@ -956,6 +956,8 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{ {
int i; int i;
vcpu_load(vcpu);
regs->pc = vcpu->arch.pc; regs->pc = vcpu->arch.pc;
regs->cr = kvmppc_get_cr(vcpu); regs->cr = kvmppc_get_cr(vcpu);
regs->ctr = vcpu->arch.ctr; regs->ctr = vcpu->arch.ctr;
@ -976,6 +978,8 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
regs->gpr[i] = kvmppc_get_gpr(vcpu, i); regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
vcpu_put(vcpu);
return 0; return 0;
} }
@ -983,6 +987,8 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{ {
int i; int i;
vcpu_load(vcpu);
vcpu->arch.pc = regs->pc; vcpu->arch.pc = regs->pc;
kvmppc_set_cr(vcpu, regs->cr); kvmppc_set_cr(vcpu, regs->cr);
vcpu->arch.ctr = regs->ctr; vcpu->arch.ctr = regs->ctr;
@ -1002,6 +1008,8 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
kvmppc_set_gpr(vcpu, i, regs->gpr[i]); kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
vcpu_put(vcpu);
return 0; return 0;
} }