Re: [PATCH] KVM/PPC: emulate ehpriv

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On 19.04.2013, at 04:44, Tiejun Chen wrote:

> We can provide this emulation to simplify more extension later.

Works for me, but this should really be part of a series that makes use of ehpriv.


Alex

> 
> Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxxxxxx>
> ---
> arch/powerpc/include/asm/disassemble.h |    4 ++++
> arch/powerpc/kvm/e500_emulate.c        |   17 +++++++++++++++++
> 2 files changed, 21 insertions(+)
> 
> diff --git a/arch/powerpc/include/asm/disassemble.h b/arch/powerpc/include/asm/disassemble.h
> index 9b198d1..856f8de 100644
> --- a/arch/powerpc/include/asm/disassemble.h
> +++ b/arch/powerpc/include/asm/disassemble.h
> @@ -77,4 +77,8 @@ static inline unsigned int get_d(u32 inst)
> 	return inst & 0xffff;
> }
> 
> +static inline unsigned int get_oc(u32 inst)
> +{
> +	return (inst >> 11) & 0x7fff;
> +}
> #endif /* __ASM_PPC_DISASSEMBLE_H__ */
> diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
> index e78f353..36492cf 100644
> --- a/arch/powerpc/kvm/e500_emulate.c
> +++ b/arch/powerpc/kvm/e500_emulate.c
> @@ -26,6 +26,7 @@
> #define XOP_TLBRE   946
> #define XOP_TLBWE   978
> #define XOP_TLBILX  18
> +#define XOP_EHPRIV  270
> 
> #ifdef CONFIG_KVM_E500MC
> static int dbell2prio(ulong param)
> @@ -80,6 +81,18 @@ static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
> 
> 	return EMULATE_DONE;
> }
> +
> +static int kvmppc_e500_emul_ehpriv(struct kvm_run *run, struct kvm_vcpu *vcpu,
> +					unsigned int inst)
> +{
> +	int emulated = EMULATE_DONE;
> +
> +	switch (get_oc(inst)) {
> +	default:
> +		emulated = EMULATE_FAIL;
> +	}
> +	return emulated;
> +}
> #endif
> 
> int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
> @@ -130,6 +143,10 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
> 			emulated = kvmppc_e500_emul_tlbivax(vcpu, ea);
> 			break;
> 
> +		case XOP_EHPRIV:
> +			emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst);
> +			break;
> +
> 		default:
> 			emulated = EMULATE_FAIL;
> 		}
> -- 
> 1.7.9.5
> 

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