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

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Message-ID: <c0ec7712-c538-4cd1-ada2-d0120c662ce8@zytor.com>
Date: Fri, 28 Jun 2024 08:18:38 -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 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.

Thanks!
     Xin

> Thanks!
> 
>>> +	idt_install_sysvec(vector, asm_##function);			\
>>>   }
>>>   #else /* !__ASSEMBLY__ */
>>
>> Thanks!
>>      Xin
>