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KVM: PPC E500: Add register l1csr0 emulation
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Latest kernel start to access l1csr0 to contron L1.
We just tell guest no operation is on going.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Liu Yu authored and Marcelo Tosatti committed Mar 1, 2010
1 parent d7fa6ab commit d86be07
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Showing 2 changed files with 7 additions and 0 deletions.
1 change: 1 addition & 0 deletions arch/powerpc/include/asm/kvm_e500.h
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ struct kvmppc_vcpu_e500 {
u32 mas5;
u32 mas6;
u32 mas7;
u32 l1csr0;
u32 l1csr1;
u32 hid0;
u32 hid1;
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6 changes: 6 additions & 0 deletions arch/powerpc/kvm/e500_emulate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,10 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
vcpu_e500->mas6 = spr_val; break;
case SPRN_MAS7:
vcpu_e500->mas7 = spr_val; break;
case SPRN_L1CSR0:
vcpu_e500->l1csr0 = spr_val;
vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
break;
case SPRN_L1CSR1:
vcpu_e500->l1csr1 = spr_val; break;
case SPRN_HID0:
Expand Down Expand Up @@ -179,6 +183,8 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
break;
}

case SPRN_L1CSR0:
kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr0); break;
case SPRN_L1CSR1:
kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr1); break;
case SPRN_HID0:
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