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Message-ID: <10808725-d98b-430b-8c47-4feef8685734@intel.com>
Date: Wed, 28 Feb 2024 12:47:06 +1300
From: "Huang, Kai" <kai.huang@...el.com>
To: Dave Hansen <dave.hansen@...ux.intel.com>, <linux-kernel@...r.kernel.org>
CC: <kirill.shutemov@...ux.intel.com>, <pbonzini@...hat.com>,
	<tglx@...utronix.de>, <x86@...nel.org>, <bp@...en8.de>
Subject: Re: [RFC][PATCH 09/34] x86/cpu: Introduce address configuration
 structure



On 23/02/2024 7:39 am, Dave Hansen wrote:
> 
> From: Dave Hansen <dave.hansen@...ux.intel.com>
> 
> Right now, 'boot_cpu_data' is established in a very ad hoc way.  Random
> bits of the initialization code write random things to it, either
> blowing away state or tweaking it as they see fit.  It's madness.
> 
> Add some more structure to the process.
> 
> Introduce an "address configuration" structure just for the boot CPU.
> This will be used to establish system-wide address space configuration.
> It is written while bringing up the boot CPU and then read *ONCE* to
> establish the configuration.
> 


 From the above description, ...

> +struct x86_addr_config bsp_addr_config;
> +

.. this can be __ro_after_init?

Maybe I am missing something, but if it cannot be annotated with 
__ro_after_init here, IMHO it would be helpful to call out in the changelog.


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