linux-kernel - Re: [PATCH v3] ACPI: resource: Remove "Zen" specific match and quirks

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Date:   Mon, 5 Jun 2023 19:21:43 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     "Limonciello, Mario" <mario.limonciello@....com>
Cc:     Chuanhong Guo <gch981213@...il.com>, linux-acpi@...r.kernel.org,
        rafael@...nel.org, linux-kernel@...r.kernel.org,
        ofenfisch@...glemail.com, wse@...edocomputers.com,
        adam.niederer@...il.com, adrian@...und.io, jirislaby@...nel.org,
        Renjith.Pananchikkal@....com, anson.tsao@....com,
        Richard.Gong@....com, evilsnoo@...ton.me, ruinairas1992@...il.com,
        nmschulte@...il.com
Subject: Re: [PATCH v3] ACPI: resource: Remove "Zen" specific match and quirks

On Mon, Jun 5, 2023 at 4:46 PM Limonciello, Mario
<mario.limonciello@....com> wrote:
>
>
> On 6/3/2023 5:19 AM, Chuanhong Guo wrote:
> > Hi!
> >
> > On Fri, Jun 2, 2023 at 6:12 AM Mario Limonciello
> > <mario.limonciello@....com> wrote:
> >> commit 9946e39fe8d0 ("ACPI: resource: skip IRQ override on
> >> AMD Zen platforms") attempted to overhaul the override logic so it
> >> didn't apply on X86 AMD Zen systems.  This was intentional so that
> >> systems would prefer DSDT values instead of default MADT value for
> >> IRQ 1 on Ryzen 6000 systems which typically uses ActiveLow for IRQ1.
> >>
> >> This turned out to be a bad assumption because several vendors
> >> add Interrupt Source Override but don't fix the DSDT. A pile of
> >> quirks was collecting that proved this wasn't sustaintable.
> >>
> >> Furthermore some vendors have used ActiveHigh for IRQ1.
> >> To solve this problem revert the following commits:
> >> * commit 17bb7046e7ce ("ACPI: resource: Do IRQ override on all TongFang
> >> GMxRGxx")
> >> * commit f3cb9b740869 ("ACPI: resource: do IRQ override on Lenovo 14ALC7")
> >> * commit bfcdf58380b1 ("ACPI: resource: do IRQ override on LENOVO IdeaPad")
> >> * commit 7592b79ba4a9 ("ACPI: resource: do IRQ override on XMG Core 15")
> >> * commit 9946e39fe8d0 ("ACPI: resource: skip IRQ override on AMD Zen
> >> platforms")
> >>
> >> Cc: ofenfisch@...glemail.com
> >> Cc: wse@...edocomputers.com
> >> Cc: adam.niederer@...il.com
> >> Cc: adrian@...und.io
> >> Cc: jirislaby@...nel.org
> >> Cc: Renjith.Pananchikkal@....com
> >> Cc: anson.tsao@....com
> >> Cc: Richard.Gong@....com
> >> Cc: Chuanhong Guo <gch981213@...il.com>
> >> Reported-by: evilsnoo@...ton.me
> >> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217394
> >> Reported-by: ruinairas1992@...il.com
> >> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217406
> >> Reported-by: nmschulte@...il.com
> >> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217336
> >> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> >> ---
> >> v2->v3:
> >>   * Adjust to drop heuristics entirely
> >>   * Drop tested tags
> >>   * Add more links and people to Cc
> >>   * Drop Fixes tag as this got a lot more risky
> >> v1->v2:
> >>   * Rebase on 71a485624c4c ("ACPI: resource: Add IRQ override quirk for LG UltraPC 17U70P")
> >>   * Pick up tag
> >>
> >> Rafael,
> >> Please hold off on picking this up until the majority of those on CC
> >> have tested it on hardware they have and reported results.
> >>
> >> Everyone else,
> >> Please test. If you have problems with this applied, please share
> >> an acpidump and dmesg either on a bug or to me privately.
> > I was expecting this patch to break my keyboard again but
> > that didn't happen. I'm on the latest UEFI from Lenovo.
> > By dumping ACPI APIC I found that there's this:
> >
> > [0C4h 0196   1]                Subtable Type : 02 [Interrupt Source Override]
> > [0C5h 0197   1]                       Length : 0A
> > [0C6h 0198   1]                          Bus : 00
> > [0C7h 0199   1]                       Source : 01
> > [0C8h 0200   4]                    Interrupt : 00000001
> > [0CCh 0204   2]        Flags (decoded below) : 0007
> >                                      Polarity : 3
> >                                  Trigger Mode : 1
> >
> > I don't have a dump of the ACPI table from older UEFIs anymore.
> >
> > Tested on Lenovo Thinkbook 14G4+ ARA with the latest
> > UEFI (J6CN45WW).
> >
> > Tested-by: Chuanhong Guo <gch981213@...il.com>
> Thanks!  Yours is the one I was most worried about.

I've applied the patch as 6.5 material, thanks!