From: Thomas Renninger <trenn@suse.de>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Conrad Kostecki <ck@conrad-kostecki.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501
Date: Mon, 17 Feb 2014 17:28:05 +0100 [thread overview]
Message-ID: <3121313.GKMnFpiL5h@skinner> (raw)
In-Reply-To: <alpine.DEB.2.02.1402142140430.21991@ionos.tec.linutronix.de>
On Friday, February 14, 2014 10:16:41 PM Thomas Gleixner wrote:
> On Fri, 14 Feb 2014, H. Peter Anvin wrote:
> > On 02/14/2014 11:59 AM, Thomas Gleixner wrote:
> > > On Fri, 14 Feb 2014, H. Peter Anvin wrote:
> > >> On 02/14/2014 11:15 AM, Thomas Gleixner wrote:
> > >>> I'm fine with ACPI tables if we can provide simple means for embedded
> > >>> users to load one via grub or just attach it to the kernel image.
> > >>
> > >> That already exists, see Documentation/acpi/initrd_table_override.txt.
> > >
> > > That requires, that you have already ACPI tables.
> > >
> > > ACPI_SIG_RSDP cannot be overridden and that's the base table you need
> > > to get ACPI going in the first place. So we need support for that and
> > > probably for storing the tables at some non canonical place.
> >
> > Well, the RSDP and RSDT/XSDT are nothing but pointers to other tables,
> > so if explicitly overridden I'm not sure if one actually would need
> > them. That doesn't mean our current code will work without them, though.
>
> I tried once to overload all of the tables, but failed miserably in
> the ACPI dungeon. RSDP was the major pain point IIRC.
What exactly do you try to achieve?
I cannot imagine a use-case where RSDP and XSDT overriding would help you.
Have you tried the current mechanism to override tables?
What is missing and for what do you need it for?
I need more context, maybe I can help then.
Thomas
next prev parent reply other threads:[~2014-02-17 16:28 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 10:23 [PATCH] x86: HPET force enable for Soekris net6501 Conrad Kostecki
2014-02-14 17:46 ` H. Peter Anvin
2014-02-14 18:06 ` AW: " Conrad Kostecki
2014-02-14 18:08 ` H. Peter Anvin
2014-02-14 18:13 ` AW: " Conrad Kostecki
2014-02-14 18:16 ` H. Peter Anvin
2014-02-14 18:21 ` Thomas Gleixner
2014-02-14 18:22 ` H. Peter Anvin
2014-02-14 18:38 ` Thomas Gleixner
2014-02-14 18:39 ` H. Peter Anvin
2014-02-14 19:15 ` Thomas Gleixner
2014-02-14 19:26 ` H. Peter Anvin
2014-02-14 19:59 ` Thomas Gleixner
2014-02-14 20:06 ` H. Peter Anvin
2014-02-14 21:16 ` Thomas Gleixner
2014-02-14 21:18 ` H. Peter Anvin
2014-02-14 21:47 ` Thomas Gleixner
2014-02-14 21:48 ` H. Peter Anvin
2014-02-17 16:28 ` Thomas Renninger [this message]
2014-02-17 17:19 ` H. Peter Anvin
2014-02-17 18:23 ` Thomas Renninger
2014-02-17 18:47 ` H. Peter Anvin
2014-02-17 19:25 ` Thomas Renninger
2014-02-17 19:40 ` H. Peter Anvin
2014-02-18 18:22 ` ACPI: Also allow ACPI table adding via initrd not only overriding Thomas Renninger
2014-02-18 18:22 ` [PATCH 1/4] ACPI: Provide support for ACPI table adding via OS Thomas Renninger
2014-02-18 18:27 ` H. Peter Anvin
2014-02-18 18:44 ` Thomas Renninger
2014-02-18 20:51 ` H. Peter Anvin
2014-02-19 11:22 ` Thomas Renninger
2014-02-21 7:24 ` [Devel] " Zheng, Lv
2014-02-21 7:28 ` Zheng, Lv
2014-02-18 18:22 ` [PATCH 2/4] ACPICA: Introduce new acpi_os_physical_table_add OS callback Thomas Renninger
2014-02-18 18:22 ` [PATCH 3/4] ACPICA: Add BGRT signature to known signatures Thomas Renninger
2014-02-18 18:22 ` [PATCH 4/4] ACPI: Add new table signatures that can be overridden/added Thomas Renninger
2014-02-18 18:38 ` [Devel] ACPI: Also allow ACPI table adding via initrd not only overriding Moore, Robert
2014-02-18 18:52 ` Thomas Renninger
2014-02-18 19:59 ` Moore, Robert
2014-02-19 11:14 ` Thomas Renninger
2014-02-19 13:03 ` Thomas Gleixner
2014-02-14 18:28 ` AW: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501 Conrad Kostecki
2014-09-09 13:56 ` Eric Sesterhenn
2014-09-09 14:54 ` Thomas Gleixner
2014-09-09 15:26 ` H. Peter Anvin
2014-09-09 15:41 ` Thomas Gleixner
2014-09-12 9:41 ` Eric Sesterhenn
2014-09-12 10:37 ` Thomas Gleixner
2014-09-12 11:06 ` [PATCH] x86: HPET force enable for e6xx based systems Eric Sesterhenn
2014-09-16 0:58 ` [tip:x86/platform] " tip-bot for Peter Neubauer
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