Re: [Xen-devel] [PATCH] x86/efi: Do not insert timestamps in efi files

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 25.10.18 at 16:00, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 25/10/18 13:35, Jan Beulich wrote:
>>>>> On 24.10.18 at 15:45, <bwiedemann@xxxxxxx> wrote:
>>> in order to make builds reproducible.
>>> See https://reproducible-builds.org/ for why this is good.
>> But is this something everyone wants, unconditionally? I'm
>> generally happy to have this basic indication of when a certain
>> image was built; I regret that ELF images have no such
>> indication.
> 
> What practical purpose does having a time stamp serve?  If you really
> need to see, what is wrong with the mtime in your build tree?

This can be changed by simple "cp" to another location.

> For shipped binaries to customers, exactly when it was built is
> irrelevant, whereas peoples ability to independently verify the
> integrity of the binary is important.

Correct, which is why I appreciate the _option_ of zapping the
timestamp.

Jan



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