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Subject: Re: x86, microcode: BUG: microcode update that changes x86_capability
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Sun, 21 Sep 2014 17:51:12 -0700
To: Andi Kleen <andi@firstfloor.org>,
        Henrique de Moraes Holschuh <hmh@hmh.eng.br>
CC: linux-kernel@vger.kernel.org, Borislav Petkov <bp@alien8.de>
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He said *outside* of the early update mechanism.

On September 21, 2014 5:37:24 PM PDT, Andi Kleen <andi@firstfloor.org> wrote:
>Henrique de Moraes Holschuh <hmh@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

-- 
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