linux-kernel - Re: [PATCH RFC 4/7] x86/microcode/intel: Prepare for microcode staging

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Message-ID: <e2a9d121-0505-4bfa-b2b6-6cee7b909aa8@intel.com>
Date: Mon, 4 Nov 2024 10:34:58 -0800
From: "Chang S. Bae" <chang.seok.bae@...el.com>
To: Dave Hansen <dave.hansen@...el.com>, Borislav Petkov <bp@...en8.de>
CC: <linux-kernel@...r.kernel.org>, <x86@...nel.org>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH RFC 4/7] x86/microcode/intel: Prepare for microcode
 staging

On 11/4/2024 8:08 AM, Dave Hansen wrote:
> On 11/4/24 03:16, Borislav Petkov wrote:
>> On Tue, Oct 01, 2024 at 09:10:39AM -0700, Chang S. Bae wrote:
>>> +static inline u64 staging_addr(u32 cpu)
>>> +{
>>> +	u32 lo, hi;
>>> +
>>> +	rdmsr_on_cpu(cpu, MSR_IA32_MCU_STAGING_MBOX_ADDR, &lo, &hi);
>>> +	return lo | ((u64)hi << 32);
>>> +}
>> A single usage site. Move its code there and get rid of the function.
> 
> Yeah, and it'll look a lot nicer if you use:
> 
> 	rdmsrl_on_cpu(cpu, MSR_IA32_MCU_STAGING_MBOX_ADDR, &addr);
> 
> and don't have to do the high/lo munging.

Oh, silly me missed this function. Thanks.