linux-kernel - Re: [PATCH v2 1/4] KVM: arm64: Use the static initializer for the vesion lock

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Message-ID: <20250305003931.GB31667@willie-the-truck>
Date: Wed, 5 Mar 2025 00:39:31 +0000
From: Will Deacon <will@...nel.org>
To: Sebastian Ene <sebastianene@...gle.com>
Cc: catalin.marinas@....com, joey.gouly@....com, maz@...nel.org,
	oliver.upton@...ux.dev, snehalreddy@...gle.com,
	sudeep.holla@....com, suzuki.poulose@....com, vdonnefort@...gle.com,
	yuzenghui@...wei.com, kvmarm@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kernel-team@...roid.com
Subject: Re: [PATCH v2 1/4] KVM: arm64: Use the static initializer for the
 vesion lock

On Thu, Feb 27, 2025 at 06:17:46PM +0000, Sebastian Ene wrote:
> Replace the definition of the hypervisor version lock
> with a static initializer.
> 
> Signed-off-by: Sebastian Ene <sebastianene@...gle.com>
> ---
>  arch/arm64/kvm/hyp/nvhe/ffa.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c
> index e433dfab882a..6df6131f1107 100644
> --- a/arch/arm64/kvm/hyp/nvhe/ffa.c
> +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c
> @@ -69,7 +69,7 @@ static struct kvm_ffa_buffers hyp_buffers;
>  static struct kvm_ffa_buffers host_buffers;
>  static u32 hyp_ffa_version;
>  static bool has_version_negotiated;
> -static hyp_spinlock_t version_lock;
> +static DEFINE_HYP_SPINLOCK(version_lock);
>  
>  static void ffa_to_smccc_error(struct arm_smccc_res *res, u64 ffa_errno)
>  {
> @@ -911,6 +911,5 @@ int hyp_ffa_init(void *pages)
>  		.lock	= __HYP_SPIN_LOCK_UNLOCKED,
>  	};
>  
> -	version_lock = __HYP_SPIN_LOCK_UNLOCKED;
>  	return 0;

nit: typo in the subject (s/vesion/version/).

With that fixed:

Acked-by: Will Deacon <will@...nel.org>

Will