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| author |   Simon Guo <wei.guo.simon@gmail.com> | 2018-05-21 13:24:20 +0800 |
|---|---|---|
| committer |   Paul Mackerras <paulus@ozlabs.org> | 2018-05-22 19:51:03 +1000 |
| commit | 94dd7fa1c0b75e909fa54d86ce2d1aaf2c54ceb7 (patch) | |
| tree | c2accfdb7eecced163fb64ec311645269a491a20 /arch/powerpc/kvm/powerpc.c | |
| parent | KVM: PPC: Book3S PR: Enable use on POWER9 inside HPT-mode guests (diff) | |
| download | linux-dev-94dd7fa1c0b75e909fa54d86ce2d1aaf2c54ceb7.tar.xz linux-dev-94dd7fa1c0b75e909fa54d86ce2d1aaf2c54ceb7.zip | |
KVM: PPC: Add KVMPPC_VSX_COPY_WORD_LOAD_DUMP type support for mmio emulation
Some VSX instructions like lxvwsx will splat word into VSR. This patch
adds a new VSX copy type KVMPPC_VSX_COPY_WORD_LOAD_DUMP to support this.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index bef27b16d233..45daf3b9d9d2 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -907,6 +907,26 @@ static inline void kvmppc_set_vsr_dword_dump(struct kvm_vcpu *vcpu, } } +static inline void kvmppc_set_vsr_word_dump(struct kvm_vcpu *vcpu, + u32 gpr) +{ + union kvmppc_one_reg val; + int index = vcpu->arch.io_gpr & KVM_MMIO_REG_MASK; + + if (vcpu->arch.mmio_vsx_tx_sx_enabled) { + val.vsx32val[0] = gpr; + val.vsx32val[1] = gpr; + val.vsx32val[2] = gpr; + val.vsx32val[3] = gpr; + VCPU_VSX_VR(vcpu, index) = val.vval; + } else { + val.vsx32val[0] = gpr; + val.vsx32val[1] = gpr; + VCPU_VSX_FPR(vcpu, index, 0) = val.vsxval[0]; + VCPU_VSX_FPR(vcpu, index, 1) = val.vsxval[0]; + } +} + static inline void kvmppc_set_vsr_word(struct kvm_vcpu *vcpu, u32 gpr32) { @@ -1061,6 +1081,9 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, else if (vcpu->arch.mmio_vsx_copy_type == KVMPPC_VSX_COPY_DWORD_LOAD_DUMP) kvmppc_set_vsr_dword_dump(vcpu, gpr); + else if (vcpu->arch.mmio_vsx_copy_type == + KVMPPC_VSX_COPY_WORD_LOAD_DUMP) + kvmppc_set_vsr_word_dump(vcpu, gpr); break; #endif #ifdef CONFIG_ALTIVEC |