linux-kernel - Re: [PATCH] ima: add a knob ima= to make IMA be able to be disabled

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Message-ID: <wzquib7u5sycaf5prdgztlcudvaa2kma6jv3zmyfw7krzgnbkp@x2u5vnumfl4v>
Date: Thu, 22 May 2025 14:02:43 +0800
From: Coiby Xu <coxu@...hat.com>
To: Baoquan He <bhe@...hat.com>
Cc: Mimi Zohar <zohar@...ux.ibm.com>, linux-integrity@...r.kernel.org, 
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org, pmenzel@...gen.mpg.de, 
	ruyang@...hat.com, chenste@...ux.microsoft.com
Subject: Re: [PATCH] ima: add a knob ima= to make IMA be able to be disabled

On Thu, May 22, 2025 at 11:24:13AM +0800, Baoquan He wrote:
>On 05/21/25 at 08:54am, Mimi Zohar wrote:
>> On Fri, 2025-05-16 at 08:22 +0800, Baoquan He wrote:
>> > CC kexec list.
>> >
>> > On 05/16/25 at 07:39am, Baoquan He wrote:
>> > > Kdump kernel doesn't need IMA functionality, and enabling IMA will cost
>> > > extra memory. It would be very helpful to allow IMA to be disabled for
>> > > kdump kernel.
>
>Thanks a lot for careufl reviewing and great suggestions.
>
>>
>> The real question is not whether kdump needs "IMA", but whether not enabling
>> IMA in the kdump kernel could be abused.  The comments below don't address
>> that question but limit/emphasize, as much as possible, turning IMA off is
>> limited to the kdump kernel.
>
>Are you suggesting removing below paragraph from patch log because they
>are redundant? I can remove it in v2 if yes.

I understand Mimi's suggestion as the commit message should answer the
question why disabling IMA should be limited to kdump.

-- 
Best regards,
Coiby