From: Borislav Petkov <bp@alien8.de>
To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: linux-kernel@vger.kernel.org, H Peter Anvin <hpa@zytor.com>
Subject: Re: [PATCH 6/8] x86, microcode, intel: total_size is valid only when data_size != 0
Date: Mon, 28 Jul 2014 16:26:40 +0200 [thread overview]
Message-ID: <20140728142640.GB5350@pd.tnic> (raw)
In-Reply-To: <20140725190411.GA21416@khazad-dum.debian.net>
On Fri, Jul 25, 2014 at 04:04:11PM -0300, Henrique de Moraes Holschuh wrote:
> As far as I can tell, Intel has always filled the reserved fields in the
> microcode data files with zeros.
Yes, and this is the statement I was looking for. IF(!) this really
is the case, then we don't have anything to worry about because new
kernel with old container will look at ->datasize, see 0 and return
DEFAULT_UCODE_TOTALSIZE and we're fine.
I've updated the patch with your additional explanation.
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2014-07-28 14:26 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-23 20:10 [PATCH 0/8] x86, microcode: cosmetic and minor issue fixes Henrique de Moraes Holschuh
2014-07-23 20:10 ` [PATCH 1/8] x86, microcode, amd: fix missing static declaration Henrique de Moraes Holschuh
2014-07-24 10:24 ` Borislav Petkov
2014-07-23 20:10 ` [PATCH 2/8] x86, microcode, intel: fix missing static declarations Henrique de Moraes Holschuh
2014-07-24 10:28 ` Borislav Petkov
2014-07-23 20:10 ` [PATCH 3/8] x86, microcode, intel: fix typos Henrique de Moraes Holschuh
2014-07-24 10:33 ` Borislav Petkov
2014-07-23 20:10 ` [PATCH 4/8] x86, microcode, intel: fix missing declaration Henrique de Moraes Holschuh
2014-07-24 11:01 ` Borislav Petkov
2014-07-24 14:27 ` Henrique de Moraes Holschuh
2014-07-24 18:23 ` [PATCH v2 4/8] x86, microcode, intel: rename apply_microcode and declare it static Henrique de Moraes Holschuh
2014-07-25 16:23 ` Borislav Petkov
2014-07-23 20:10 ` [PATCH 5/8] x86, microcode, intel: don't use fields from unknown format header Henrique de Moraes Holschuh
2014-07-24 11:37 ` Borislav Petkov
2014-07-24 13:30 ` Henrique de Moraes Holschuh
2014-07-24 14:28 ` Borislav Petkov
2014-07-24 15:07 ` Henrique de Moraes Holschuh
2014-07-24 16:29 ` Borislav Petkov
2014-07-24 17:49 ` Henrique de Moraes Holschuh
2014-07-23 20:10 ` [PATCH 6/8] x86, microcode, intel: total_size is valid only when data_size != 0 Henrique de Moraes Holschuh
2014-07-25 16:46 ` Borislav Petkov
2014-07-25 19:04 ` Henrique de Moraes Holschuh
2014-07-28 14:26 ` Borislav Petkov [this message]
2014-07-28 15:39 ` Henrique de Moraes Holschuh
2014-07-23 20:10 ` [PATCH 7/8] x86, microcode, intel: forbid some incorrect metadata Henrique de Moraes Holschuh
2014-07-28 15:31 ` Borislav Petkov
2014-07-28 19:37 ` Henrique de Moraes Holschuh
2014-07-29 10:45 ` Borislav Petkov
2014-07-29 20:25 ` Henrique de Moraes Holschuh
2014-08-04 11:09 ` Borislav Petkov
2014-08-04 20:18 ` Henrique de Moraes Holschuh
2014-08-08 12:54 ` Borislav Petkov
2014-08-08 13:50 ` Henrique de Moraes Holschuh
2014-08-08 15:21 ` Borislav Petkov
2014-08-08 15:45 ` Henrique de Moraes Holschuh
2014-07-23 20:10 ` [PATCH 8/8] x86, microcode, intel: correct extended signature checksum verification Henrique de Moraes Holschuh
2014-07-28 20:36 ` Henrique de Moraes Holschuh
2014-08-24 14:55 ` [tip:x86/microcode] x86, microcode, amd: Fix missing static declaration tip-bot for Henrique de Moraes Holschuh
2014-08-24 14:55 ` [tip:x86/microcode] x86, microcode, intel: Add missing static declarations tip-bot for Henrique de Moraes Holschuh
2014-08-24 14:56 ` [tip:x86/microcode] x86, microcode, intel: Fix typos tip-bot for Henrique de Moraes Holschuh
2014-08-24 14:56 ` [tip:x86/microcode] x86, microcode, intel: Rename apply_microcode and declare it static tip-bot for Henrique de Moraes Holschuh
2014-08-24 14:56 ` [tip:x86/microcode] x86, microcode, intel: Fix total_size computation tip-bot for Henrique de Moraes Holschuh
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