linux-kernel - Re: [PATCH v2 1/2] kexec: history: track previous kernel version

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Message-ID: <b1e1be89-348e-4188-bb04-c86904e61709@gmail.com>
Date: Fri, 2 Jan 2026 18:33:20 +0300
From: Usama Arif <usamaarif642@...il.com>
To: Breno Leitao <leitao@...ian.org>
Cc: Alexander Graf <graf@...zon.com>, Mike Rapoport <rppt@...nel.org>,
 Pasha Tatashin <pasha.tatashin@...een.com>,
 Pratyush Yadav <pratyush@...nel.org>, linux-kernel@...r.kernel.org,
 kexec@...ts.infradead.org, linux-mm@...ck.org, rmikey@...a.com, clm@...com,
 riel@...riel.com, kernel-team@...a.com
Subject: Re: [PATCH v2 1/2] kexec: history: track previous kernel version



On 02/01/2026 18:14, Breno Leitao wrote:
> Hello Usama,
> 
> On Fri, Jan 02, 2026 at 06:02:39PM +0300, Usama Arif wrote:
>> On 02/01/2026 17:53, Breno Leitao wrote:
>> I think we should make this default if KHO is enabled, i.e. not have a Kconfig
>> option for this. The cost of storing the char array is negligable.
> 
> Sure, I can get it enabled by default once KHO gets enabled. Thanks for
> the feedback.
> 
>>> +	pr_info("This kernel was kexec'ed from kernel release: %s\n",
>>> +		kho_in.previous_release);
>>
>> Maybe s/release/version everywhere? It might not be a release, but no strong opinion.
> 
> As I understand, in the kernel parlance, "version" is something
> different from "release", and what we want here is "release". Here is an
> example of uname, which also matches with kernel source code and UTS.
> 
>   # uname --kernel-version
>   #1 SMP Mon Nov 17 07:00:42 PST 2025
> 
>   # uname --kernel-release
>   6.16.1-0_gc0739ee5037a
>

ack