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: <e0be8ced-4bfe-437a-ae4d-9b4dcc15d100@arm.com>
Date: Mon, 19 Jan 2026 15:47:07 +0000
From: Ben Horgan <ben.horgan@....com>
To: Catalin Marinas <catalin.marinas@....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

Hi Catalin,

On 1/15/26 19:13, Catalin Marinas wrote:
> 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?

Yes, I'll remove the inner #ifdef.

Thanks,

Ben