linux-kernel - Re: [PATCH v2 0/3] Enable FRED earlier

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Message-ID: <1cb291df-6576-41eb-a8d8-522e04c6b1c0@zytor.com>
Date: Tue, 13 Aug 2024 09:03:15 -0700
From: Xin Li <xin@...or.com>
To: Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org
Cc: hpa@...or.com, mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, peterz@...radead.org, andrew.cooper3@...rix.com,
        nik.borisov@...e.com, houwenlong.hwl@...group.com
Subject: Re: [PATCH v2 0/3] Enable FRED earlier

On 8/13/2024 8:58 AM, Xin Li wrote:
>> I just noticed that there is another leftover regarding FRED:
>>
>> arch/x86/kernel/cpu/cpuid-deps.c:86: { X86_FEATURE_FRED, 
>> X86_FEATURE_WRMSRNS },
>>
>> We removed the dependency on X86_FEATURE_WRMSRNS, right? So this is
>> stale and should be removed too.

Sorry, this dependency is not removed yet, but will be as mentioned in
my previous reply.

Thanks!
     Xin


> Right, I did plan to include such a change per your ask to remove the
> comment in arch/x86/include/asm/switch_to.h:
> 
> https://lore.kernel.org/lkml/87ttfw18jy.ffs@tglx/
> 
> So it will be in the next iteration of that patch set.