linux-kernel - Re: [PATCH] kdump, vmcoreinfo: Export sme_me

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <dcbc925f-6935-6a34-fde1-7aa1ea378891@redhat.com>
Date:   Wed, 31 Oct 2018 10:26:23 +0800
From:   lijiang <lijiang@...hat.com>
To:     Baoquan He <bhe@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Young <dyoung@...hat.com>
Cc:     Petr Tesarik <ptesarik@...e.cz>, linux-kernel@...r.kernel.org,
        x86@...nel.org, kexec@...ts.infradead.org, mingo@...hat.com,
        tglx@...utronix.de
Subject: Re: [PATCH] kdump, vmcoreinfo: Export sme_me_mask value to vmcoreinfo

在 2018年10月30日 17:23, Baoquan He 写道:
> 
> Hi Boris, DaveY and Lianbo,
> 
> On 10/30/18 at 10:15am, Borislav Petkov wrote:
>> On Tue, Oct 30, 2018 at 01:09:00PM +0800, Dave Young wrote:
>>> It is not the content, I think it is a good catch from Boris, it would
>>> be good to document the exported things in somewhere eg.
>>> Documentation/kdump/vmcoreinfo.txt
> 
> For the vmcoreinfo variables document, I personally think it might be
> not necessary. The reason is that all the old varialbles are exported
> with the name of themselves. We know what they are or what they
> represent since they are all kernel symbols or macro. Only this me_mask,
> it's a local variable and store the value of sme_me_mask for now, may
> store more info later like Petr mentioned, and also will store the memory
> encryption information of TME (which is intel's transparent memory encryption).
> We can add code comment around to tell these.
> 
Thank you, everyone.

I personally agree with Baoquan's opinion. What do you think about? Boris and other reviewer?

If the vmcoreinfo document is necessary, would you like to help me to provide an outline?
I can try my best to write the document.

Anyway, we should make a choice.

Regards,
Lianbo

> Personal opinion.
> 
> Thanks
> Baoquan
>