linux-kernel - Re: x86, microcode: BUG: microcode update that changes x86

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20140925165740.GE28201@nazgul.tnic>
Date:	Thu, 25 Sep 2014 18:57:40 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Chuck Ebbert <cebbert.lkml@...il.com>,
	Andy Lutomirski <luto@...capital.net>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: x86, microcode: BUG: microcode update that changes x86_capability

On Thu, Sep 25, 2014 at 01:41:21PM -0300, Henrique de Moraes Holschuh wrote:
> We still need to update x86_capability after a microcode update for the
> above to really work in the "install microcode into initramfs" case.

I think you mean for the kernels without early microcode loading...

Because those which do early loading will have loaded the microcode much
earlier than the x86_capability bits are detected. AFAICS, of course. It
is late already :-\

-- 
Regards/Gruss,
    Boris.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/