From: "H. Peter Anvin" <hpa@zytor.com>
To: Borislav Petkov <bp@alien8.de>,
Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Fenghua Yu <fenghua.yu@intel.com>, linux-kernel@vger.kernel.org
Subject: Re: BUG: early intel microcode update violating alignment rules
Date: Mon, 11 Aug 2014 07:50:06 -0700 [thread overview]
Message-ID: <53E8D81E.7050705@zytor.com> (raw)
In-Reply-To: <20140811140057.GA21693@pd.tnic>
On 08/11/2014 07:00 AM, Borislav Petkov wrote:
>>
>> I often wonder how much of the Intel SDM is really a fairy tale... it
>> certainly has enough legends from times long past inside ;-) But just like
>> old stories, should you forget all about them, they sometimes grow fangs
>> back and get you when you're least prepared.
>>
>
> It seems to me you're looking for issues where there are none. We simply
> have to ask Intel people what's with the 16-byte alignment and fix
> the SDM, apparently. If the processor accepts the non-16-byte-aligned
> update, why do you care?
>
The SDM is the contract between the hardware and the software. This
doesn't mean that not following the SDM doesn't work, but following the
procedure in the SDM is what his guaranteed to work.
So Henrique is right, we should fix this if we can.
-hpa
next prev parent reply other threads:[~2014-08-11 14:51 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-09 23:19 BUG: early intel microcode update violating alignment rules Henrique de Moraes Holschuh
2014-08-11 10:22 ` Borislav Petkov
2014-08-11 13:16 ` Henrique de Moraes Holschuh
2014-08-11 14:00 ` Borislav Petkov
2014-08-11 14:50 ` H. Peter Anvin [this message]
2014-08-11 18:52 ` Bill Davidsen
2014-08-11 19:15 ` Borislav Petkov
2014-08-14 13:12 ` Henrique de Moraes Holschuh
2014-08-11 14:51 ` H. Peter Anvin
2014-08-11 18:18 ` Henrique de Moraes Holschuh
2014-08-11 18:48 ` H. Peter Anvin
2014-08-31 19:45 ` early microcode: how to disable at runtime? Henrique de Moraes Holschuh
2014-08-31 19:48 ` H. Peter Anvin
2014-08-31 20:11 ` Henrique de Moraes Holschuh
2014-09-01 5:13 ` Borislav Petkov
2014-09-01 10:19 ` Henrique de Moraes Holschuh
2014-09-01 16:35 ` H. Peter Anvin
2014-09-01 17:43 ` Henrique de Moraes Holschuh
2014-09-01 18:48 ` H. Peter Anvin
2014-09-01 19:59 ` Henrique de Moraes Holschuh
2014-09-02 6:33 ` Borislav Petkov
2014-09-02 13:16 ` Henrique de Moraes Holschuh
2014-09-03 6:40 ` Borislav Petkov
2014-09-03 12:43 ` Henrique de Moraes Holschuh
2014-09-04 15:42 ` Borislav Petkov
2014-09-04 17:45 ` Henrique de Moraes Holschuh
2014-09-05 8:50 ` Borislav Petkov
2014-09-05 14:23 ` Henrique de Moraes Holschuh
2014-09-04 18:37 ` Yu, Fenghua
2014-09-05 8:52 ` Borislav Petkov
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