Re: [PATCH resend] platform/x86: intel-uncore-freq: add Emerald Rapids support

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On Wed, Nov 23, 2022 at 4:55 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>
> Hi Rafael,
>
> On 11/23/22 15:59, Rafael J. Wysocki wrote:
> > On Wed, Nov 23, 2022 at 3:37 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> >>
> >> Hi,
> >>
> >> On 11/23/22 09:45, Artem Bityutskiy wrote:
> >>> Hello Hans,
> >>>
> >>> On Tue, 2022-11-22 at 16:30 +0100, Hans de Goede wrote:
> >>> There are 3 different issues with this patch, next time please
> >>> check your patch a bit more thorough before submitting it:
> >>>
> >>> 1. This is the first time I see this, or that the
> >>> platform-driver-x86@xxxxxxxxxxxxxxx
> >>> list sees this. Next time please make sure you address the patch to the right
> >>> people the first time you send it:
> >>>
> >>> sure, thanks.
> >>>
> >>> 2. This has checkpatch warnings which are easily fixable:
> >>>
> >>> [hans@shalem platform-drivers-x86]$ scripts/checkpatch.pl 0001-platform-x86-
> >>> intel-uncore-freq-add-Emerald-Rapids-su.patch
> >>> WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per
> >>> line)
> >>>
> >>> OK.
> >>>
> >>> 3. This fails to build on top of:
> >>> https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=for-next
> >>>
> >>> OK, thanks for the pointer. I'd need platfrom-drivers-x86 git tree to include
> >>> this upstream commit:
> >>>
> >>> 7beade0dd41d x86/cpu: Add several Intel server CPU model numbers
> >>>
> >>> Would you please consider updating?
> >>
> >> Ugh, no, *NO*! I really expect Intel to do better here!
> >>
> >> As I repeated explained with the
> >>
> >> "platform/x86/intel: pmc/core: Add Raptor Lake support to pmc core driver"
> >>
> >> patch I cannot just go and cherry-pick random patches merged through other trees
> >> because that may cause conflicts and will cause the merge to look really
> >> funky.
> >
> > I don't think this is about requesting a cherry-pick though.
> >
> >> There are proper ways to do this and this is not it!
> >>
> >> This is something which Intel really *must* do correctly next time because
> >> having this discussion over and over again is becoming very tiresome!
> >>
> >> So the proper way to do starts with realizing *beforehand* that things
> >> will not build on top of pdx86/for-next. By like actually doing
> >> a build-test based on top of pdx86/for-next instead of this nonsense of
> >> repeatedly sending me broken patches.
> >
> > This patch is based on the mainline.  The requisite commit has been
> > included into the Linus' tree since at least 6.1-rc4 AFAICS and I
> > suppose that it has been tested on top of that.
>
> Ah, I did not know that; and that is typically info which I would
> have expected to be explicitly mentioned in the non-existing cover-letter
> for this patch.
>
> >
> > You could in principle create a temporary branch based on 6.1-rc4 (or
> > a later -rc), apply the patch on top of it, merge your current branch
> > on top of that and merge it back into your current branch (that should
> > result in a fast-forward merge, so the temporary branch can be deleted
> > after it).
>
> Yes I could merge rc4 into my for-next, but I'm not really a big fan
> of back-merges like this. I try to keep my for-next history linear
> based on the last rc1, because I find seeing what is going on
> a lot easier that way. But if this happens more often I guess
> I may need to get used to doing back-merges more often then
> just after rc1 is out.
>
> What I don't understand is why this patch was not send as a part of
> the series starting which also had the
> "7beade0dd41d x86/cpu: Add several Intel server CPU model numbers"
> patch. That patch just adds a couple #define-s presumably there
> were more patches in that series actually using those defines.
>
> Things would have been cleaner / easier if this patch had simply
> been a part of that series and if it was merged in one go with
> that series...
>
> Btw this new CPU ID is also missing from:
> drivers/platform/x86/intel/pmc/core.c
> drivers/platform/x86/intel/ifs/core.c
>
> At least I assume it will need to be added there too, although
> I guess it might not be as simple as only adding the CPU-id
> match there ?
>
> > Alternatively, if you'd rather not do that, I can merge the Artem's
> > patch through the PM tree (it is PM-related after all).
>
> If you can do that, that would be great, thank you.

No problem.

> > I suppose that your ACK would be applicable for that too?
>
> Yes.

Thanks!



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