diff options
| author | James Hogan <james.hogan@imgtec.com> | 2016-04-22 10:38:49 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-05-10 15:56:52 +0200 |
| commit | 4ac334295e4f3b996e9feabe36e79e44bf77a06f (patch) | |
| tree | 028788c32aaec2ad3e192a534a0fa3823047cf8d | |
| parent | 556f2a5231bf3ec4ce98d46434920e31787f79d6 (diff) | |
| download | linux-4ac334295e4f3b996e9feabe36e79e44bf77a06f.tar.bz2 | |
MIPS: KVM: Add missing disable FPU hazard barriers
Add the necessary hazard barriers after disabling the FPU in
kvm_lose_fpu(), just to be safe.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim KrÄmář" <rkrcmar@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/mips/kvm/mips.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index ec3fe09ef15c..23b209463238 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -1556,8 +1556,10 @@ void kvm_lose_fpu(struct kvm_vcpu *vcpu) /* Disable MSA & FPU */ disable_msa(); - if (vcpu->arch.fpu_inuse & KVM_MIPS_FPU_FPU) + if (vcpu->arch.fpu_inuse & KVM_MIPS_FPU_FPU) { clear_c0_status(ST0_CU1 | ST0_FR); + disable_fpu_hazard(); + } vcpu->arch.fpu_inuse &= ~(KVM_MIPS_FPU_FPU | KVM_MIPS_FPU_MSA); } else if (vcpu->arch.fpu_inuse & KVM_MIPS_FPU_FPU) { set_c0_status(ST0_CU1); @@ -1568,6 +1570,7 @@ void kvm_lose_fpu(struct kvm_vcpu *vcpu) /* Disable FPU */ clear_c0_status(ST0_CU1 | ST0_FR); + disable_fpu_hazard(); } preempt_enable(); } |