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| author |   Paul Mackerras <paulus@samba.org> | 2013-09-06 13:18:32 +1000 |
|---|---|---|
| committer |   Alexander Graf <agraf@suse.de> | 2013-10-17 14:44:59 +0200 |
| commit | c0867fd50943d71d9f0bc5078393ce4ec76b3923 (patch) | |
| tree | e8ff5805ef9e9ad775467fe3912361c48e1c84cd /arch/powerpc/kvm/book3s.c | |
| parent | KVM: PPC: Book3S HV: Implement timebase offset for guests (diff) | |
| download | linux-dev-c0867fd50943d71d9f0bc5078393ce4ec76b3923.tar.xz linux-dev-c0867fd50943d71d9f0bc5078393ce4ec76b3923.zip | |
KVM: PPC: Book3S: Add GET/SET_ONE_REG interface for VRSAVE
The VRSAVE register value for a vcpu is accessible through the
GET/SET_SREGS interface for Book E processors, but not for Book 3S
processors. In order to make this accessible for Book 3S processors,
this adds a new register identifier for GET/SET_ONE_REG, and adds
the code to implement it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 700df6f1d32c..f97369dc457c 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -528,6 +528,9 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) } val = get_reg_val(reg->id, vcpu->arch.vscr.u[3]); break; + case KVM_REG_PPC_VRSAVE: + val = get_reg_val(reg->id, vcpu->arch.vrsave); + break; #endif /* CONFIG_ALTIVEC */ case KVM_REG_PPC_DEBUG_INST: { u32 opcode = INS_TW; @@ -605,6 +608,13 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) } vcpu->arch.vscr.u[3] = set_reg_val(reg->id, val); break; + case KVM_REG_PPC_VRSAVE: + if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { + r = -ENXIO; + break; + } + vcpu->arch.vrsave = set_reg_val(reg->id, val); + break; #endif /* CONFIG_ALTIVEC */ #ifdef CONFIG_KVM_XICS case KVM_REG_PPC_ICP_STATE: |