From: Jan Beulich <jbeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Xen-devel <xen-devel@lists.xenproject.org>,
"Wei Liu" <wl@xen.org>, "Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [Xen-devel] [PATCH 6/7] x86/ucode/intel: Clean up microcode_sanity_check()
Date: Thu, 26 Mar 2020 16:02:49 +0100 [thread overview]
Message-ID: <fcbc2655-51e7-9f4d-53ee-47f927673175@suse.com> (raw)
In-Reply-To: <00cf5ab3-6ea4-5b89-73cd-ca51fe355737@citrix.com>
On 26.03.2020 15:41, Andrew Cooper wrote:
> On 25/03/2020 14:07, Jan Beulich wrote:
>>> Introduce a check missing from the old code, that total_size is a multiple of
>>> 1024 bytes,
>> Where is this documented? The rather brief section in SDM vol 3 doesn't
>> mention anything like this.
>
> It is in the middle of the final paragraph of 9.11.1 Microcode Update,
> immediately preceding Table 9-7
>
> "The total size field of the microcode update header specifies the
> encrypted data size plus the header size; its value must be in multiples
> of 1024 bytes (1 KBytes)."
Oh, I had looked at 8.8.5 Microcode Update Resources instead,
being surprised it was much less information than I recalled
was available.
Jan
next prev parent reply other threads:[~2020-03-26 15:03 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 10:17 [Xen-devel] [PATCH 0/7] x86/ucode: Cleanup and fixes - Part 3/n (Intel) Andrew Cooper
2020-03-23 10:17 ` [Xen-devel] [PATCH 1/7] x86/ucode: Document the behaviour of the microcode_ops hooks Andrew Cooper
2020-03-23 12:33 ` Jan Beulich
2020-03-23 13:26 ` Andrew Cooper
2020-03-23 14:24 ` Jan Beulich
2020-03-23 10:17 ` [Xen-devel] [PATCH 2/7] x86/ucode/intel: Adjust microcode_sanity_check() to not take void * Andrew Cooper
2020-03-25 13:23 ` Jan Beulich
2020-03-23 10:17 ` [Xen-devel] [PATCH 3/7] x86/ucode/intel: Remove gratuitous memory allocations from cpu_request_microcode() Andrew Cooper
2020-03-25 13:34 ` Jan Beulich
2020-03-23 10:17 ` [Xen-devel] [PATCH 4/7] x86/ucode/intel: Reimplement get_{data, total}size() helpers Andrew Cooper
2020-03-25 13:41 ` Jan Beulich
2020-03-26 14:35 ` Andrew Cooper
2020-03-26 14:56 ` Jan Beulich
2020-03-26 15:09 ` Andrew Cooper
2020-03-26 15:19 ` Jan Beulich
2020-03-23 10:17 ` [Xen-devel] [PATCH 5/7] x86/ucode/intel: Clean up microcode_update_match() Andrew Cooper
2020-03-25 13:51 ` Jan Beulich
2020-03-26 14:36 ` Andrew Cooper
2020-03-23 10:17 ` [Xen-devel] [PATCH 6/7] x86/ucode/intel: Clean up microcode_sanity_check() Andrew Cooper
2020-03-25 14:07 ` Jan Beulich
2020-03-26 14:41 ` Andrew Cooper
2020-03-26 15:02 ` Jan Beulich [this message]
2020-03-23 10:17 ` [Xen-devel] [PATCH 7/7] x86/ucode/intel: Fold structures together Andrew Cooper
2020-03-25 14:16 ` Jan Beulich
2020-03-25 14:32 ` Andrew Cooper
2020-03-26 12:24 ` Jan Beulich
2020-03-26 14:50 ` Andrew Cooper
2020-03-26 15:05 ` Jan Beulich
2020-03-27 12:40 ` Andrew Cooper
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