linux-kernel - Re: [PATCH v3 11/47] arm64: mpam: Add helpers to change a task or cpu's MPAM PARTID/PMG values

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Message-ID: <aWk8aZafbtXx5bPu@arm.com>
Date: Thu, 15 Jan 2026 19:13:45 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: Ben Horgan <ben.horgan@....com>
Cc: amitsinght@...vell.com, baisheng.gao@...soc.com,
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Subject: Re: [PATCH v3 11/47] arm64: mpam: Add helpers to change a task or
 cpu's MPAM PARTID/PMG values

On Mon, Jan 12, 2026 at 04:58:38PM +0000, Ben Horgan wrote:
> +static inline void mpam_set_task_partid_pmg(struct task_struct *tsk,
> +					    u16 partid_d, u16 partid_i,
> +					    u8 pmg_d, u8 pmg_i)
> +{
> +#ifdef CONFIG_ARM64_MPAM
> +	u64 regval = __mpam_regval(partid_d, partid_i, pmg_d, pmg_i);
> +
> +	WRITE_ONCE(task_thread_info(tsk)->mpam_partid_pmg, regval);
> +#endif
> +}

Isn't this function, together with mpam_thread_switch(), in an enclosing
#ifdef already?

> +
>  static inline void mpam_thread_switch(struct task_struct *tsk)
>  {
>  	u64 oldregval;
> -- 
> 2.43.0
> 

-- 
Catalin