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

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Message-ID: <CAJsYDVKoB1AEL47Ud+8jbxMrbZedM0i9p44-PLQTFR9PKLfy6A@mail.gmail.com>
Date:   Sat, 3 Jun 2023 18:19:59 +0800
From:   Chuanhong Guo <gch981213@...il.com>
To:     Mario Limonciello <mario.limonciello@....com>
Cc:     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

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>

-- 
Regards,
Chuanhong Guo