linux-kernel - Re: [PATCH 1/2] x86/fred: Always install system interrupt handler into IDT

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Message-ID: <52d155d1-61bb-4829-b2ec-b60cdd1bf2c5@zytor.com>
Date: Tue, 2 Jul 2024 20:42:20 -0700
From: Xin Li <xin@...or.com>
To: Hou Wenlong <houwenlong.hwl@...group.com>
Cc: linux-kernel@...r.kernel.org, Lai Jiangshan <jiangshan.ljs@...group.com>,
        Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, Xin Li
 <xin3.li@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH 1/2] x86/fred: Always install system interrupt handler
 into IDT

On 7/2/2024 7:44 PM, Hou Wenlong wrote:
> On Wed, Jul 03, 2024 at 01:16:29AM +0800, Xin Li wrote:
>> On 6/28/2024 8:18 AM, Xin Li wrote:
>>> On 6/28/2024 2:36 AM, Hou Wenlong wrote:
>>>> Hi Xin,
>>>>
>>>> It seems preferable to parse the FRED command line and disable FRED
>>>> early instead of using this method. As mentioned in my cover letter, I
>>>> initially attempted to fix the problem this way (by parsing the command
>>>> line in cpu_parse_early_param()). Should I send a new patch for it, or
>>>> will you be covering it in your work to enable FRED early?
>>>>
>>>
>>> I have done it in my patches that enables FRED early, but if you want,
>>> you can post it, because you're a key contributor in this work.
>>>
>>
>> Please let me know if you want to do it.
>>
> Hi Xin,
> 
> Sorry for forgetting to reply. I think it would be better for the fix to
> be covered in your work.

NP, thanks!