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 for Android: free password hash cracker in your pocket

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

Message-ID: <06e07006-342a-4041-8592-37dd16866be6@email.android.com>
Date:	Sun, 21 Sep 2014 17:51:12 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andi Kleen <andi@...stfloor.org>,
	Henrique de Moraes Holschuh <hmh@....eng.br>
CC:	linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>
Subject: Re: x86, microcode: BUG: microcode update that changes x86_capability

He said *outside* of the early update mechanism.

On September 21, 2014 5:37:24 PM PDT, Andi Kleen <andi@...stfloor.org> wrote:
>Henrique de Moraes Holschuh <hmh@....eng.br> writes:
>
>
>>     And yes, this means we will kill support for microcode updates
>>     outside of the initramfs/early-initramfs, at least in Debian,
>>     and likely in Ubuntu.
>
>You got it totally backwards. initramfs updating should handle this
>microcode update just fine, as it happens before the kernel 
>scans the cpuids. Just don't update it later.
>
>Nothing else is needed.
>
>-Andi

-- 
Sent from my mobile phone.  Please pardon brevity and lack of formatting.
--
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/