Re: [RFC PATCH 03/16] KVM: arm64: Refactor kvm_arm_num_regs() for easier maintenance

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

Dave Martin <Dave.Martin@arm.com> writes:

> kvm_arm_num_regs() adds together various partial register counts in
> a freeform sum expression, which makes it harder than necessary to
> read diffs that add, modify or remove a single term in the sum
> (which is expected to the common case under maintenance).
>
> This patch refactors the code to add the term one per line, for
> maximum readability.
>
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>

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

> ---
>  arch/arm64/kvm/guest.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
> index 56a0260..4a9d77c 100644
> --- a/arch/arm64/kvm/guest.c
> +++ b/arch/arm64/kvm/guest.c
> @@ -205,8 +205,14 @@ static int get_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
>   */
>  unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
>  {
> -	return num_core_regs() + kvm_arm_num_sys_reg_descs(vcpu)
> -		+ kvm_arm_get_fw_num_regs(vcpu)	+ NUM_TIMER_REGS;
> +	unsigned long res = 0;
> +
> +	res += num_core_regs();
> +	res += kvm_arm_num_sys_reg_descs(vcpu);
> +	res += kvm_arm_get_fw_num_regs(vcpu);
> +	res += NUM_TIMER_REGS;
> +
> +	return res;
>  }
>
>  /**


--
Alex Bennée
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