linux-kernel - Re: [PATCH v2 15/21] arm64: KVM: VHE: Use unified sysreg accessors for timer

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Message-ID: <20160201142319.GU1478@cbox>
Date:	Mon, 1 Feb 2016 15:23:19 +0100
From:	Christoffer Dall <christoffer.dall@...aro.org>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, kvmarm@...ts.cs.columbia.edu
Subject: Re: [PATCH v2 15/21] arm64: KVM: VHE: Use unified sysreg accessors
 for timer

On Mon, Jan 25, 2016 at 03:53:49PM +0000, Marc Zyngier wrote:
> Switch the timer code to the unified sysreg accessors.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>

Reviewed-by: Christoffer Dall <christoffer.dall@...aro.org>

> ---
>  arch/arm64/kvm/hyp/timer-sr.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm64/kvm/hyp/timer-sr.c b/arch/arm64/kvm/hyp/timer-sr.c
> index 1051e5d..f276d9e 100644
> --- a/arch/arm64/kvm/hyp/timer-sr.c
> +++ b/arch/arm64/kvm/hyp/timer-sr.c
> @@ -31,12 +31,12 @@ void __hyp_text __timer_save_state(struct kvm_vcpu *vcpu)
>  	u64 val;
>  
>  	if (kvm->arch.timer.enabled) {
> -		timer->cntv_ctl = read_sysreg(cntv_ctl_el0);
> -		timer->cntv_cval = read_sysreg(cntv_cval_el0);
> +		timer->cntv_ctl = read_sysreg_el0(cntv_ctl);
> +		timer->cntv_cval = read_sysreg_el0(cntv_cval);
>  	}
>  
>  	/* Disable the virtual timer */
> -	write_sysreg(0, cntv_ctl_el0);
> +	write_sysreg_el0(0, cntv_ctl);
>  
>  	/* Allow physical timer/counter access for the host */
>  	val = read_sysreg(cnthctl_el2);
> @@ -64,8 +64,8 @@ void __hyp_text __timer_restore_state(struct kvm_vcpu *vcpu)
>  
>  	if (kvm->arch.timer.enabled) {
>  		write_sysreg(kvm->arch.timer.cntvoff, cntvoff_el2);
> -		write_sysreg(timer->cntv_cval, cntv_cval_el0);
> +		write_sysreg_el0(timer->cntv_cval, cntv_cval);
>  		isb();
> -		write_sysreg(timer->cntv_ctl, cntv_ctl_el0);
> +		write_sysreg_el0(timer->cntv_ctl, cntv_ctl);
>  	}
>  }
> -- 
> 2.1.4
>