From: Thomas Renninger <trenn@suse.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
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>,
devel@acpica.org
Subject: Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501
Date: Mon, 17 Feb 2014 20:25:18 +0100 [thread overview]
Message-ID: <4233973.R9Tf84J4Ne@skinner> (raw)
In-Reply-To: <53025956.40505@zytor.com>
On Monday, February 17, 2014 10:47:50 AM H. Peter Anvin wrote:
> On 02/17/2014 10:23 AM, Thomas Renninger wrote:
> > Easiest I can think of instead of trying to modify RSDP or similar, is
> > to still pass the tables via unzipped, glued cpio which the kernel
> > can access early. The same way it is done for current ACPI table
> > overriding
> > and early microcode passing.
>
> We shouldn't *need* an RSDP and RSDT/XSDT, though, since all they are
> are pointers to the actual tables. Rather than hacking around it we
> should probably just fix the fundamental problem.
That is what I described.
If something similar what I wrote gets implemented, you can simply
add ACPI tables to initrd as described here:
Documentation/acpi/initrd_table_override.txt
and if BIOS already provides them they get overridden, otherwise
they get added.
Thomas
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Renninger <trenn at suse.de>
To: devel@acpica.org
Subject: Re: [Devel] [PATCH] x86: HPET force enable for Soekris net6501
Date: Mon, 17 Feb 2014 20:25:18 +0100 [thread overview]
Message-ID: <4233973.R9Tf84J4Ne@skinner> (raw)
In-Reply-To: 53025956.40505@zytor.com
[-- Attachment #1: Type: text/plain, Size: 872 bytes --]
On Monday, February 17, 2014 10:47:50 AM H. Peter Anvin wrote:
> On 02/17/2014 10:23 AM, Thomas Renninger wrote:
> > Easiest I can think of instead of trying to modify RSDP or similar, is
> > to still pass the tables via unzipped, glued cpio which the kernel
> > can access early. The same way it is done for current ACPI table
> > overriding
> > and early microcode passing.
>
> We shouldn't *need* an RSDP and RSDT/XSDT, though, since all they are
> are pointers to the actual tables. Rather than hacking around it we
> should probably just fix the fundamental problem.
That is what I described.
If something similar what I wrote gets implemented, you can simply
add ACPI tables to initrd as described here:
Documentation/acpi/initrd_table_override.txt
and if BIOS already provides them they get overridden, otherwise
they get added.
Thomas
next prev parent reply other threads:[~2014-02-17 19:25 UTC|newest]
Thread overview: 64+ 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
2014-02-17 17:19 ` H. Peter Anvin
2014-02-17 18:23 ` Thomas Renninger
2014-02-17 18:23 ` [Devel] " Thomas Renninger
2014-02-17 18:47 ` AW: AW: " H. Peter Anvin
2014-02-17 19:25 ` Thomas Renninger [this message]
2014-02-17 19:25 ` [Devel] " Thomas Renninger
2014-02-17 19:40 ` AW: AW: " 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 ` [Devel] " Thomas Renninger
2014-02-18 18:22 ` [PATCH 1/4] ACPI: Provide support for ACPI table adding via OS Thomas Renninger
2014-02-18 18:22 ` [Devel] " Thomas Renninger
2014-02-18 18:27 ` H. Peter Anvin
2014-02-18 18:44 ` Thomas Renninger
2014-02-18 18:44 ` [Devel] " Thomas Renninger
2014-02-18 20:51 ` H. Peter Anvin
2014-02-19 11:22 ` Thomas Renninger
2014-02-19 11:22 ` [Devel] " Thomas Renninger
2014-02-21 7:24 ` Zheng, Lv
2014-02-21 7:24 ` Zheng, Lv
2014-02-21 7:28 ` 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 ` [Devel] " Thomas Renninger
2014-02-18 18:22 ` [PATCH 3/4] ACPICA: Add BGRT signature to known signatures Thomas Renninger
2014-02-18 18:22 ` [Devel] " 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 18:22 ` [Devel] " Thomas Renninger
2014-02-18 18:38 ` [Devel] ACPI: Also allow ACPI table adding via initrd not only overriding Moore, Robert
2014-02-18 18:38 ` Moore, Robert
2014-02-18 18:52 ` Thomas Renninger
2014-02-18 18:52 ` Thomas Renninger
2014-02-18 19:59 ` Moore, Robert
2014-02-18 19:59 ` Moore, Robert
2014-02-19 11:14 ` Thomas Renninger
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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