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Message-ID: <1AE640813FDE7649BE1B193DEA596E88024DF6E1@SHSMSX101.ccr.corp.intel.com>
Date:	Mon, 17 Mar 2014 01:18:10 +0000
From:	"Zheng, Lv" <lv.zheng@...el.com>
To:	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	"Moore, Robert" <robert.moore@...el.com>,
	"Len Brown" <lenb@...nel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: RE: ACPICA 20140214 auto-serialize weirds my machine...

Hi,

> From: Valdis Kletnieks [mailto:Valdis.Kletnieks@...edu]
> Sent: Saturday, March 15, 2014 12:05 AM
> 
> Surprisingly enough, this hasn't seemed to have bitten many Linux people yet,
> Google only finds a BSD thread (where the same ACPICA code is in use):
> 
> http://comments.gmane.org/gmane.os.dragonfly-bsd.user/1817
> 
> I found this, but haven't tried it yet:
> 
> commit 5f1cb4a92e4c4aabd139ff9ca1e11c0e2db2ac59
> Author: Lv Zheng <lv.zheng@...el.com>
> Date:   Wed Feb 26 10:32:01 2014 +0800
> 
>     ACPICA: Remove global option to serialize all control methods.
> 
>     With the addition of the auto-serialization feature, this option
>     is obsolete and is completely removed. Lv Zheng.

This is not the right commit that is related to your issue.
This commit only removes the old facility, it is harmless.
Actually the facility is enabled by default in this commit:
https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=cd52379678785b02d7a357988cfba214fdaf92f4

commit cd52379678785b02d7a357988cfba214fdaf92f4
Subject: ACPICA: Add global option to disable method auto-serialization.

This change adds an option to disable the auto-serialization of
methods that create named objects.

And the commit you are talking about just re-used the kernel parameter in order to add an option to disable the new facility.

> 
>     This patch also updates acpi_serialize kernel parameter using the
>     new auto-serialization feature - acpi_gbl_auto_serialize_methods.
> 
> This looks like a user nightmare waiting to happen, because:
> 
> -   	acpi_serialize	[HW,ACPI] force serialization of AML methods
> +	acpi_serialize=	[HW,ACPI] configure auto-serialization of AML methods
> 
> Re-using a kernel parameter name with different semantics is just asking for trouble.
> 
> I get this in my dmesg, and then I end up with all sorts of ACPI-related
> weirdness - everything from 4 or 5 temperature sensors evaporating to it
> claiming that my laptop doesn't have a battery bay (it may also be related to
> an issue I'm seeing with multiple graphics monitors as well, but I haven't
> verified that yet).
> 
> We're going to need a better way to deal with this before it gets to
> mainline....
> 
> [    0.119344] ACPI: Executed 1 blocks of module-level executable AML code
> [    0.135282] ACPI Error: Cannot acquire Mutex for method [SNVC], current SyncLevel is too large (1) (20140214/dsmethod-362)
> [    0.135288] ACPI Error: Method parse/execution failed [\SMBF] (Node ffff88012d026ec0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135298] ACPI Error: Method parse/execution failed [\GENS] (Node ffff88012d026e70), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135307] ACPI Error: Method parse/execution failed [\EISC] (Node ffff88012d02d560), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135320] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECR1] (Node ffff88012d02d470),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.135328] ACPI Error: Method parse/execution failed [\ECRB] (Node ffff88012d02d5d8), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135336] ACPI Error: Method parse/execution failed [\ECG5] (Node ffff88012d02d740), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135343] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.EINI] (Node ffff88012d02db00), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135351] ACPI Error: Method parse/execution failed [\EV3_] (Node ffff88012d0314c0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135359] ACPI Error: Method parse/execution failed [\_SB_.PCI0._INI] (Node ffff88012d026920), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.135574] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
> [    0.136283] ACPI: SSDT 0x00000000CE789598 000523 (v01 PmRef  Cpu0Cst  00003001 INTL 20051117)
> [    0.138312] ACPI: Dynamic OEM Table Load:
> [    0.138316] ACPI: SSDT 0x0000000000000000 000523 (v01 PmRef  Cpu0Cst  00003001 INTL 20051117)
> [    0.141483] ACPI: SSDT 0x00000000CE78AA98 000303 (v01 PmRef  ApIst    00003000 INTL 20051117)
> [    0.143683] ACPI: Dynamic OEM Table Load:
> [    0.143687] ACPI: SSDT 0x0000000000000000 000303 (v01 PmRef  ApIst    00003000 INTL 20051117)
> [    0.146215] ACPI: SSDT 0x00000000CE790C18 000119 (v01 PmRef  ApCst    00003000 INTL 20051117)
> [    0.148279] ACPI: Dynamic OEM Table Load:
> [    0.148282] ACPI: SSDT 0x0000000000000000 000119 (v01 PmRef  ApCst    00003000 INTL 20051117)
> [    0.152678] ACPI Error: Cannot acquire Mutex for method [SNVC], current SyncLevel is too large (1) (20140214/dsmethod-362)
> [    0.152684] ACPI Error: Method parse/execution failed [\SMBF] (Node ffff88012d026ec0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.152693] ACPI Error: Method parse/execution failed [\GENS] (Node ffff88012d026e70), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.152702] ACPI Error: Method parse/execution failed [\EISC] (Node ffff88012d02d560), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.152714] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECR1] (Node ffff88012d02d470),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.152722] ACPI Error: Method parse/execution failed [\ECBT] (Node ffff88012d02d588), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.152730] ACPI Error: Method parse/execution failed [\ECG3] (Node ffff88012d02d6c8), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.152737] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECIN] (Node ffff88012d02d3d0),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.152745] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._REG] (Node ffff88012d02d3f8),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.152818] ACPI: Interpreter enabled
> [    0.152828] ACPI: (supports S0)
> [    0.152830] ACPI: Using IOAPIC for interrupt routing
> [    0.152883] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
> [    0.156479] ACPI Error: Cannot acquire Mutex for method [SNVC], current SyncLevel is too large (1) (20140214/dsmethod-362)
> [    0.156485] ACPI Error: Method parse/execution failed [\SMBF] (Node ffff88012d026ec0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.156494] ACPI Error: Method parse/execution failed [\GENS] (Node ffff88012d026e70), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.156504] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.UAR1._STA] (Node ffff88012d02fb28),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.156666] ACPI Error: Cannot acquire Mutex for method [SNVC], current SyncLevel is too large (1) (20140214/dsmethod-362)
> [    0.156671] ACPI Error: Method parse/execution failed [\SMBF] (Node ffff88012d026ec0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.156680] ACPI Error: Method parse/execution failed [\GENS] (Node ffff88012d026e70), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.156689] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.LPTE.CLPS] (Node ffff88012d02fcb8),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.156702] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.LPTE._STA] (Node ffff88012d02fce0),
> AE_AML_MUTEX_ORDER (20140214/psparse-536)
> [    0.162229] ACPI Error: Cannot acquire Mutex for method [SNVC], current SyncLevel is too large (1) (20140214/dsmethod-362)
> [    0.162234] ACPI Error: Method parse/execution failed [\SMBF] (Node ffff88012d026ec0), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.162244] ACPI Error: Method parse/execution failed [\GENS] (Node ffff88012d026e70), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)
> [    0.162254] ACPI Error: Method parse/execution failed [\EISC] (Node ffff88012d02d560), AE_AML_MUTEX_ORDER
> (20140214/psparse-536)

We are not sure if this is the Windows behavior.
And we have a discussion at:
https://bugzilla.kernel.org/show_bug.cgi?id=52191
Such error messages are useful to improve the facility or force us to change our mind.

Thanks and best regards
-Lv

> 
> (you get the idea.  I get a total of 172 'ACPI Error:' messages before I get to
> a single-user prompt)
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