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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-12-04 21:35:35 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-12-14 09:26:57 +0100 |
| commit | 6a96bc7fa0cdd96bac2b8298d708a94f8de6f6d4 (patch) | |
| tree | ce8c773ce662332d689cce3409e12faaf79b4b3e | |
| parent | 1393123e1e24aba96413d351b9546086ea07504d (diff) | |
| download | lwn-6a96bc7fa0cdd96bac2b8298d708a94f8de6f6d4.tar.gz lwn-6a96bc7fa0cdd96bac2b8298d708a94f8de6f6d4.zip | |
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_fpu
Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_set_fpu().
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 15 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 8 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 2 |
3 files changed, 18 insertions, 7 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 39327888bb06..3bd2f83e1fa9 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -2749,15 +2749,24 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) { - if (test_fp_ctl(fpu->fpc)) - return -EINVAL; + int ret = 0; + + vcpu_load(vcpu); + + if (test_fp_ctl(fpu->fpc)) { + ret = -EINVAL; + goto out; + } vcpu->run->s.regs.fpc = fpu->fpc; if (MACHINE_HAS_VX) convert_fp_to_vx((__vector128 *) vcpu->run->s.regs.vrs, (freg_t *) fpu->fprs); else memcpy(vcpu->run->s.regs.fprs, &fpu->fprs, sizeof(fpu->fprs)); - return 0; + +out: + vcpu_put(vcpu); + return ret; } int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 846d292ea33b..981b61531ab7 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7722,8 +7722,11 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) { - struct fxregs_state *fxsave = - &vcpu->arch.guest_fpu.state.fxsave; + struct fxregs_state *fxsave; + + vcpu_load(vcpu); + + fxsave = &vcpu->arch.guest_fpu.state.fxsave; memcpy(fxsave->st_space, fpu->fpr, 128); fxsave->cwd = fpu->fcw; @@ -7734,6 +7737,7 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) fxsave->rdp = fpu->last_dp; memcpy(fxsave->xmm_space, fpu->xmm, sizeof fxsave->xmm_space); + vcpu_put(vcpu); return 0; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 5791aa687233..ca0ec9fb72ce 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2720,9 +2720,7 @@ out_free1: fpu = NULL; goto out; } - vcpu_load(vcpu); r = kvm_arch_vcpu_ioctl_set_fpu(vcpu, fpu); - vcpu_put(vcpu); break; } default: |