Re: [PATCH v2 02/11] KVM: arm: rename pm_fake handler to trap_raz_wi

["Alex Bennée" <alex.bennee@linaro.org>]

Zhichao Huang <zhichao.huang@linaro.org> writes:

> pm_fake doesn't quite describe what the handler does (ignoring writes
> and returning 0 for reads).
>
> As we're about to use it (a lot) in a different context, rename it
> with a (admitedly cryptic) name that make sense for all users.
>
> Signed-off-by: Zhichao Huang <zhichao.huang@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

> ---
>  arch/arm/kvm/coproc.c | 34 ++++++++++++++++------------------
>  1 file changed, 16 insertions(+), 18 deletions(-)
>
> diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
> index 2e12760..9d283d9 100644
> --- a/arch/arm/kvm/coproc.c
> +++ b/arch/arm/kvm/coproc.c
> @@ -229,7 +229,7 @@ bool access_vm_reg(struct kvm_vcpu *vcpu,
>   * must always support PMCCNTR (the cycle counter): we just RAZ/WI for
>   * all PM registers, which doesn't crash the guest kernel at least.
>   */
> -static bool pm_fake(struct kvm_vcpu *vcpu,
> +static bool trap_raz_wi(struct kvm_vcpu *vcpu,
>  		    const struct coproc_params *p,
>  		    const struct coproc_reg *r)
>  {
> @@ -239,19 +239,19 @@ static bool pm_fake(struct kvm_vcpu *vcpu,
>  		return read_zero(vcpu, p);
>  }
>  
> -#define access_pmcr pm_fake
> -#define access_pmcntenset pm_fake
> -#define access_pmcntenclr pm_fake
> -#define access_pmovsr pm_fake
> -#define access_pmselr pm_fake
> -#define access_pmceid0 pm_fake
> -#define access_pmceid1 pm_fake
> -#define access_pmccntr pm_fake
> -#define access_pmxevtyper pm_fake
> -#define access_pmxevcntr pm_fake
> -#define access_pmuserenr pm_fake
> -#define access_pmintenset pm_fake
> -#define access_pmintenclr pm_fake
> +#define access_pmcr trap_raz_wi
> +#define access_pmcntenset trap_raz_wi
> +#define access_pmcntenclr trap_raz_wi
> +#define access_pmovsr trap_raz_wi
> +#define access_pmselr trap_raz_wi
> +#define access_pmceid0 trap_raz_wi
> +#define access_pmceid1 trap_raz_wi
> +#define access_pmccntr trap_raz_wi
> +#define access_pmxevtyper trap_raz_wi
> +#define access_pmxevcntr trap_raz_wi
> +#define access_pmuserenr trap_raz_wi
> +#define access_pmintenset trap_raz_wi
> +#define access_pmintenclr trap_raz_wi
>  
>  /* Architected CP15 registers.
>   * CRn denotes the primary register number, but is copied to the CRm in the
> @@ -532,8 +532,7 @@ int kvm_handle_cp14_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
>  	params.Rt2 = (kvm_vcpu_get_hsr(vcpu) >> 10) & 0xf;
>  	params.CRm = 0;
>  
> -	/* raz_wi */
> -	(void)pm_fake(vcpu, &params, NULL);
> +	(void)trap_raz_wi(vcpu, &params, NULL);
>  
>  	/* handled */
>  	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
> @@ -559,8 +558,7 @@ int kvm_handle_cp14_32(struct kvm_vcpu *vcpu, struct kvm_run *run)
>  	params.Op2 = (kvm_vcpu_get_hsr(vcpu) >> 17) & 0x7;
>  	params.Rt2 = 0;
>  
> -	/* raz_wi */
> -	(void)pm_fake(vcpu, &params, NULL);
> +	(void)trap_raz_wi(vcpu, &params, NULL);
>  
>  	/* handled */
>  	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));

-- 
Alex Bennée