From: Tyler Baicar <baicar.tyler@gmail.com>
To: okaya@kernel.org
Cc: mr.nuke.me@gmail.com, helgaas@google.com, austin_bolen@dell.com,
alex_gagniuc@dellteam.com, keith.busch@intel.com,
Shyam_Iyer@dell.com, lukas@wunner.de, bhelgaas@google.com,
rjw@rjwysocki.net, lenb@kernel.org, ruscur@russell.cc,
sbobroff@linux.ibm.com, oohall@gmail.com,
linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 0/2] PCI/AER: Consistently use _OSC to determine who owns AER
Date: Mon, 19 Nov 2018 11:53:05 -0500 [thread overview]
Message-ID: <CABo9ajD5GJY7MrMjQc3hE=4tpPKpeceMtVEHwCwgjrvJUYjLvg@mail.gmail.com> (raw)
In-Reply-To: <b9a739c8-80bd-e04c-ac19-97bc54f20eff@kernel.org>
On Thu, Nov 15, 2018 at 8:49 PM Sinan Kaya <okaya@kernel.org> wrote:
>
> On 11/15/2018 3:16 PM, Alexandru Gagniuc wrote:
> > I've asked around a few people at Dell and they unanimously agree that
> > _OSC is the correct way to determine ownership of AER. In linux, we
> > use the result of _OSC to enable AER services, but we use HEST to
> > determine AER ownership. That's inconsistent. This series drops the
> > use of HEST in favor of _OSC.
> >
> > [1]https://lkml.org/lkml/2018/11/15/62
>
> This change breaks the existing systems that rely on the HEST table
> telling the operating system about firmware first presence.
>
> Besides, HEST table has much more granularity about which PCI component
> needs firmware such as global/device/switch.
>
> You should probably circulate these ideas for wider consumption in UEFI
> forum as UEFI owns the HEST table definition.
I agree with Sinan, this will break existing systems, and the granularity of the
HEST definition is more useful than the single bit in _OSC.
next prev parent reply other threads:[~2018-11-19 16:53 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 [this message]
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
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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