diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_pr.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_pr.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index ddc626eea2da..7d27a9518f07 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -90,6 +90,7 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu) #endif kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); + kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); vcpu->cpu = -1; } @@ -625,6 +626,14 @@ static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac) /* Facility not available to the guest, ignore giveup request*/ return; } + + switch (fac) { + case FSCR_TAR_LG: + vcpu->arch.tar = mfspr(SPRN_TAR); + mtspr(SPRN_TAR, current->thread.tar); + vcpu->arch.shadow_fscr &= ~FSCR_TAR; + break; + } #endif } @@ -794,6 +803,12 @@ static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac) } switch (fac) { + case FSCR_TAR_LG: + /* TAR switching isn't lazy in Linux yet */ + current->thread.tar = mfspr(SPRN_TAR); + mtspr(SPRN_TAR, vcpu->arch.tar); + vcpu->arch.shadow_fscr |= FSCR_TAR; + break; default: kvmppc_emulate_fac(vcpu, fac); break; @@ -1393,6 +1408,9 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) /* Make sure we save the guest FPU/Altivec/VSX state */ kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); + /* Make sure we save the guest TAR/EBB/DSCR state */ + kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); + out: vcpu->mode = OUTSIDE_GUEST_MODE; return ret; |