linux-kernel - Re: [PATCH] x86: Clear LAM and FRED feature bits

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Message-ID: <58952466-2d35-4422-865e-3d5e17089fc0@zytor.com>
Date: Tue, 22 Jul 2025 12:26:00 -0700
From: "H. Peter Anvin" <hpa@...or.com>
To: Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>
Cc: Xin Li <xin@...or.com>, Gleixner Thomas <tglx@...utronix.de>,
        Molnar Ingo <mingo@...hat.com>, Petkov Borislav <bp@...en8.de>,
        Hansen Dave <dave.hansen@...ux.intel.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Clear LAM and FRED feature bits

On 2025-07-22 11:19, Maciej Wieczor-Retman wrote:
>>
>> The easiest thing would be to initialize the setup disabled mask with the
>> DISABLED bitmask instead of zero. This can be done statically; if it isn't
>> already the awk script can produce the disabled bitmask in array form.
> 
> Oh, that does sound simple. I'll try that too, see what ends up with cleaner
> code.
> 

Xin should have code from me for exactly this.

	-hpa