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From: Geraldo Nascimento <geraldogabriel@gmail.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Antonio Terceiro <antonio.terceiro@linaro.org>,
	Takashi Iwai <tiwai@suse.de>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: snd-cmipci oops during probe on arm64 (current mainline, pre-6.6-rc1)
Date: Wed, 6 Sep 2023 18:00:10 -0300	[thread overview]
Message-ID: <ZPjoWr17SNFHLDPD@geday> (raw)
In-Reply-To: <9e48fb7c-72a5-241a-004a-5f6791a81475@arm.com>

On Wed, Sep 06, 2023 at 09:37:18PM +0100, Robin Murphy wrote:
> 
> Bit bigger than a Pi... ;)
>

Ohh, that's impressive indeed!

But looking around with Google, it turns out the Altra Ampere PCIe is
definitely quirky, see:

https://lore.kernel.org/linux-acpi/20200806225525.GA706347@bjorn-Precision-5520/T/
https://github.com/Tencent/TencentOS-kernel/commit/f454797b673c06c0eb1b77be20d8a475ad2fbf6f

The first quirk should probably be activated on Antonio's kernel but the
second one being a downstream Tencent patch, isn't. Alas, the second
quirk comes with a performance hit, see:

https://gitlab.freedesktop.org/drm/amd/-/issues/2078

Thanks,
Geraldo Nascimento

WARNING: multiple messages have this Message-ID (diff)
From: Geraldo Nascimento <geraldogabriel@gmail.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Antonio Terceiro <antonio.terceiro@linaro.org>,
	Takashi Iwai <tiwai@suse.de>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: snd-cmipci oops during probe on arm64 (current mainline, pre-6.6-rc1)
Date: Wed, 6 Sep 2023 18:00:10 -0300	[thread overview]
Message-ID: <ZPjoWr17SNFHLDPD@geday> (raw)
In-Reply-To: <9e48fb7c-72a5-241a-004a-5f6791a81475@arm.com>

On Wed, Sep 06, 2023 at 09:37:18PM +0100, Robin Murphy wrote:
> 
> Bit bigger than a Pi... ;)
>

Ohh, that's impressive indeed!

But looking around with Google, it turns out the Altra Ampere PCIe is
definitely quirky, see:

https://lore.kernel.org/linux-acpi/20200806225525.GA706347@bjorn-Precision-5520/T/
https://github.com/Tencent/TencentOS-kernel/commit/f454797b673c06c0eb1b77be20d8a475ad2fbf6f

The first quirk should probably be activated on Antonio's kernel but the
second one being a downstream Tencent patch, isn't. Alas, the second
quirk comes with a performance hit, see:

https://gitlab.freedesktop.org/drm/amd/-/issues/2078

Thanks,
Geraldo Nascimento

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-09-06 21:01 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-05 22:01 snd-cmipci oops during probe on arm64 (current mainline, pre-6.6-rc1) Antonio Terceiro
2023-09-05 22:01 ` Antonio Terceiro
2023-09-06  6:10 ` Takashi Iwai
2023-09-06  6:10   ` Takashi Iwai
2023-09-06 12:49   ` Robin Murphy
2023-09-06 12:49     ` Robin Murphy
2023-09-06 18:36     ` Antonio Terceiro
2023-09-06 18:36       ` Antonio Terceiro
2023-09-06 19:03       ` Geraldo Nascimento
2023-09-06 19:03         ` Geraldo Nascimento
2023-09-06 20:37         ` Robin Murphy
2023-09-06 20:37           ` Robin Murphy
2023-09-06 21:00           ` Geraldo Nascimento [this message]
2023-09-06 21:00             ` Geraldo Nascimento
2023-09-06 19:52       ` Robin Murphy
2023-09-06 19:52         ` Robin Murphy
2023-09-07  0:41         ` Antonio Terceiro
2023-09-07  0:41           ` Antonio Terceiro
2023-09-07 12:22           ` Robin Murphy
2023-09-07 12:22             ` Robin Murphy
2023-09-07  2:29       ` Geraldo Nascimento
2023-09-07  2:29         ` Geraldo Nascimento

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