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From: Sinan Kaya <okaya@kernel.org>
To: Keith Busch <keith.busch@intel.com>
Cc: alex_gagniuc@dellteam.com, Tyler Baicar <baicar.tyler@gmail.com>,
	sbobroff@linux.ibm.com, linux-pci@vger.kernel.org,
	Shyam_Iyer@dell.com, rjw@rjwysocki.net,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-acpi@vger.kernel.org, lukas@wunner.de, oohall@gmail.com,
	mr.nuke.me@gmail.com, bhelgaas@google.com, austin_bolen@dell.com,
	linuxppc-dev@lists.ozlabs.org, lenb@kernel.org
Subject: Re: [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER
Date: Mon, 19 Nov 2018 13:24:11 -0500	[thread overview]
Message-ID: <c0d6535f-324b-557a-3d0e-ccec070459a7@kernel.org> (raw)
In-Reply-To: <20181119181051.GA26707@localhost.localdomain>

On 11/19/2018 1:10 PM, Keith Busch wrote:
>> We can't really turn off firmware first in the kernel without asking help
>> from the firmware.
> The _OSC method this patch utilizes is the ACPI spec defined way for
> the kernel to wrest control from firmware. BIOS specific menu settings
> shouldn't be our only recourse when we have a spec authority defining
> generic OS interfaces to accomplish the same thing.
> 
> Unless there is a disagreement on the _OSC interpreation, we'd have to
> accept that platforms breaking from this patch are non-compliant.
> 

It depends on which spec you look :)

UEFI HEST table specification also claims that it should be the ultimate
table for when PCI firmware-first should be disabled/enabled.

I think somebody needs to fix these. I saw an email from Harb Abdulhamid
sent to aswg this morning.

That's why I suggested circulating this idea in UEFI forums first.
Let's see what everybody thinks. We can go from there.

  reply	other threads:[~2018-11-19 18:26 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-15 23:16 [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER Alexandru Gagniuc
2018-11-15 23:16 ` [PATCH 1/2] PCI/AER: Do not use APEI/HEST to disable AER services globally Alexandru Gagniuc
2018-11-15 23:16 ` [PATCH 2/2] PCI/AER: Determine AER ownership based on _OSC instead of HEST Alexandru Gagniuc
2018-11-15 23:43   ` Keith Busch
2018-11-16  1:49 ` [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER Sinan Kaya
2018-11-19 16:53   ` Tyler Baicar
2018-11-19 16:53     ` Keith Busch
2018-11-19 17:32       ` Sinan Kaya
2018-11-19 17:36         ` Keith Busch
2018-11-19 17:42         ` Sinan Kaya
2018-11-19 17:41           ` Keith Busch
2018-11-19 17:56             ` Sinan Kaya
2018-11-19 18:10               ` Keith Busch
2018-11-19 18:24                 ` Sinan Kaya [this message]
2018-11-19 19:11                   ` Alex G.
2018-11-19 19:32                     ` Sinan Kaya
2018-11-19 20:16                       ` Alex_Gagniuc
2018-11-19 20:33                         ` Sinan Kaya
2018-11-19 23:49                           ` Alex_Gagniuc
2018-11-20  1:54                             ` Sinan Kaya
2018-11-20 20:44                               ` Alex_Gagniuc
2018-11-20 21:02                                 ` Sinan Kaya
2018-11-20 21:42                                   ` Keith Busch
2018-11-20 22:28                                     ` Sinan Kaya
2018-11-20 22:35                                       ` Alex G.
2018-11-20 21:46                                   ` Alex_Gagniuc
2018-11-20 22:08                                     ` Sinan Kaya
2018-11-20 22:36                                       ` Alex_Gagniuc
2018-11-27 18:22                                       ` Alex_Gagniuc
2018-11-27 18:32                                         ` Sinan Kaya
2018-11-27 18:46                                           ` Tyler Baicar
2018-11-16 12:37 ` David Laight
2019-03-05 23:16 ` Bjorn Helgaas

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