linux-kernel - Re: [PATCH] x86/cpufeatures: SGX: Adjust the error message when BIOS does not support SGX

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Message-ID: <49F442796158E773+c51253ff-8051-4c25-9c95-e5305d13628b@uniontech.com>
Date: Wed, 31 Jul 2024 11:58:35 +0800
From: WangYuli <wangyuli@...ontech.com>
To: "Huang, Kai" <kai.huang@...el.com>, "seanjc@...gle.com"
 <seanjc@...gle.com>
Cc: "baimingcong@...ontech.com" <baimingcong@...ontech.com>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
 "bp@...en8.de" <bp@...en8.de>,
 "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
 "jarkko@...nel.org" <jarkko@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
 "tglx@...utronix.de" <tglx@...utronix.de>, "x86@...nel.org"
 <x86@...nel.org>, "mingo@...hat.com" <mingo@...hat.com>,
 "xiangzelong@...ontech.com" <xiangzelong@...ontech.com>,
 "wubo@...ontech.com" <wubo@...ontech.com>,
 "guanwentao@...ontech.com" <guanwentao@...ontech.com>,
 "haitao.huang@...ux.intel.com" <haitao.huang@...ux.intel.com>
Subject: Re: [PATCH] x86/cpufeatures: SGX: Adjust the error message when BIOS
 does not support SGX

On 2024/7/31 06:48, Huang, Kai wrote:

>> FWIW, this could easily happen with a virtual machine, e.g. running an old QEMU
>> with `-cpu host`.
>>
> Hmm.. it appears so, if the old Qemu doesn't have SGX support.  Thanks.
>
> Perhaps "SGX disabled or unsupported by BIOS." or "SGX not enabled by
> BIOS" is slightly better than the current "SGX disabled by BIOS", but I
> am not sure whether it is worth patching.

Of course, most kernel developers are incredibly busy and are reluctant 
to spend their time

on those little changes.


However, the user base of Linux is gradually shifting from 
'professionals' to 'general users'.

As I mentioned in the commit msg. I hope to make kernel logs clearer and 
more understandable,

reducing confusion for those who are unfamiliar with the codebase.


It's important that any change in upstream can potentially impact 
countless users.


Sincerely,

-- 
WangYuli