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authorMihai Caraman <mihai.caraman@freescale.com>2012-12-20 04:52:39 +0000
committerAlexander Graf <agraf@suse.de>2013-01-10 13:30:11 +0100
commitf2be655004ddc36f2c5fc5e541d481dcd782ab83 (patch)
treee1f4b11ddc0bee6a72ca95f2e57bdefad566fe31 /arch/powerpc
parent50c7bb80b5bd5a9962905306dd2292eeb9857d46 (diff)
downloadtalos-op-linux-f2be655004ddc36f2c5fc5e541d481dcd782ab83.tar.gz
talos-op-linux-f2be655004ddc36f2c5fc5e541d481dcd782ab83.zip
KVM: PPC: Fix mfspr/mtspr MMUCFG emulation
On mfspr/mtspr emulation path Book3E's MMUCFG SPR with value 1015 clashes with G4's MSSSR0 SPR. Move MSSSR0 emulation from generic part to Books3S. MSSSR0 also clashes with Book3S's DABRX SPR. DABRX was not explicitly handled so Book3S execution flow will behave as before. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c2
-rw-r--r--arch/powerpc/kvm/emulate.c5
2 files changed, 2 insertions, 5 deletions
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index c88161bed8df..836c56975e21 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -455,6 +455,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_PMC3_GEKKO:
case SPRN_PMC4_GEKKO:
case SPRN_WPAR_GEKKO:
+ case SPRN_MSSSR0:
break;
unprivileged:
default:
@@ -551,6 +552,7 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_PMC3_GEKKO:
case SPRN_PMC4_GEKKO:
case SPRN_WPAR_GEKKO:
+ case SPRN_MSSSR0:
*spr_val = 0;
break;
default:
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index b0855e5d8905..71abcf4e2bda 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -149,8 +149,6 @@ static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
case SPRN_TBWL: break;
case SPRN_TBWU: break;
- case SPRN_MSSSR0: break;
-
case SPRN_DEC:
vcpu->arch.dec = spr_val;
kvmppc_emulate_dec(vcpu);
@@ -201,9 +199,6 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
case SPRN_PIR:
spr_val = vcpu->vcpu_id;
break;
- case SPRN_MSSSR0:
- spr_val = 0;
- break;
/* Note: mftb and TBRL/TBWL are user-accessible, so
* the guest can always access the real TB anyways.
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