Re: [Xen-devel] [PATCH 6/7] x86/ucode/intel: Clean up microcode_sanity_check()

[Jan Beulich <jbeulich@xxxxxxxx>]

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