KVM: s390: remove superfluous save_fpu_regs() call

The save_fpu_regs() call in kvm_arch_vcpu_ioctl_get_fpu() is pointless: it
will save the current user space fpu context to the thread's save area. But
the code is accessing only the vcpu's save are / mapped register area,
which in this case are not the same.

Therefore remove the confusing call.

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 432688acc52340fcf62f261e16b5e659953e776f..6ca53009c861f26ad3fd0608055f76caaf6dbddd 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -4331,8 +4331,6 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 {
        vcpu_load(vcpu);
 
-       /* make sure we have the latest values */
-       save_fpu_regs();
        if (MACHINE_HAS_VX)
                convert_vx_to_fp((freg_t *) fpu->fprs,
                                 (__vector128 *) vcpu->run->s.regs.vrs);