Re: [Xen-devel] [PATCH v8 00/28] Kconfig conversion

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 18.12.15 at 16:06, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 18/12/15 14:55, Juergen Gross wrote:
>> On 18/12/15 15:20, Doug Goldstein wrote:
>>> On 12/18/15 4:30 AM, Ian Campbell wrote:
>>>> On Tue, 2015-12-15 at 07:12 -0600, Doug Goldstein wrote:
>>>>> The following series is a follow on to the Kconfig conversion
>>>>> patch series.
>>>> It occurred to me this morning that we probably ought to stash
>>>> the .config somewhere on install in such a way that it can be
>>>> associated with the Xen binary (i.e. with the same full suffix as
>>>> the binary itself, not the abridged symlink names), maybe as
>>>> $(BOOT_DIR)/$(T)- $(XEN_FULLVERSION).config?
>>>>
>>>> Maybe no so important right now, but once we start getting user
>>>> visible options we are going to want this.
>>>>
>>>> I hesitate to suggest that we may also want an equivalent of
>>>> /proc/kconfig, i.e. hypercall to retrieve the running config, or
>>>> even a debug key to dump it to the console. Both of those are
>>>> more complex and secondary to installing it somewhere I think.
>>>>
>>>> Ian.
>>>>
>>> Yes. I wholeheartedly agree. This is in my follow on patch series
>>> that I plan on posting this afternoon.
>> With your series applied the hypervisor is being rebuilt each time I
>> call "make install" (without any other command in between).
>>
>> Without the series no rebuild is triggered.
> 
> It has always been partially rebuilt a second time, as the timestamp in
> a generated header file changes.  It is just far less obvious before
> this series.

Mind educating me why this series makes it worse / more obvious?

> Fixing this has been low on my todo list for a very long time.

Mine too, fwiw.

Jan


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