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authorPaul Mackerras <paulus@ozlabs.org>2017-03-23 03:55:16 +0300
committerPaul Mackerras <paulus@ozlabs.org>2017-04-20 04:37:44 +0300
commit9b5ab0051306033b0b1e83dd72e1f84a0c8dd4bf (patch)
tree25c1372aceaf78913fc506cc064e8bf33020710a /arch/powerpc/kvm/emulate_loadstore.c
parentceba57df43a25ede55a96a795703c46022b1d1d0 (diff)
downloadlinux-9b5ab0051306033b0b1e83dd72e1f84a0c8dd4bf.tar.xz
KVM: PPC: Add MMIO emulation for remaining floating-point instructions
For completeness, this adds emulation of the lfiwax and lfiwzx instructions. With this, all floating-point load and store instructions as of Power ISA V2.07 are emulated. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/emulate_loadstore.c')
-rw-r--r--arch/powerpc/kvm/emulate_loadstore.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c
index f10ba0c2c202..af833531af31 100644
--- a/arch/powerpc/kvm/emulate_loadstore.c
+++ b/arch/powerpc/kvm/emulate_loadstore.c
@@ -270,6 +270,20 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed);
break;
+ case OP_31_XOP_LFIWAX:
+ if (kvmppc_check_fp_disabled(vcpu))
+ return EMULATE_DONE;
+ emulated = kvmppc_handle_loads(run, vcpu,
+ KVM_MMIO_REG_FPR|rt, 4, 1);
+ break;
+
+ case OP_31_XOP_LFIWZX:
+ if (kvmppc_check_fp_disabled(vcpu))
+ return EMULATE_DONE;
+ emulated = kvmppc_handle_load(run, vcpu,
+ KVM_MMIO_REG_FPR|rt, 4, 1);
+ break;
+
case OP_31_XOP_STFSX:
if (kvmppc_check_fp_disabled(vcpu))
return EMULATE_DONE;