linux-kernel - Re: acpi_ex_system_memory_space

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Date:	Thu, 27 Aug 2009 12:05:31 +0300
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	"Brown, Len" <len.brown@...el.com>,
	"Moore, Robert" <robert.moore@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: acpi_ex_system_memory_space_handler oops

On (08/27/09 16:44), Lin Ming wrote:
> > > > [    0.178628] ACPI: EC: Look up EC in DSDT
> > > > [    0.196480] ACPI: Interpreter enabled
> > > > [    0.196575] ACPI: (supports S0 S1 S3 S4 S5)
> > > > [    0.197184] ACPI: Using IOAPIC for interrupt routing
> > > > [    0.197352] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
> > > > [    0.203511] ACPI Error (dswload-0790): [PCFG] Namespace lookup failure, AE_ALREADY_EXISTS
> > > > [    0.203738] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog 20090521 psloop-227
> > > > [    0.203964] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.RBPE] (Node f7017678), AE_ALREADY_EXISTS
> > > > [    0.204256] ACPI: Marking method RBPE as Serialized because of AE_ALREADY_EXISTS error
> > > > [    0.204510] ACPI Error (psparse-0537): Method parse/execution failed [\_GPE._L01] (Node f701d198), AE_ALREADY_EXISTS
> > > > [    0.204803] ACPI: Marking method _L01 as Serialized because of AE_ALREADY_EXISTS error
> > > > [    0.205063] ACPI Exception: AE_ALREADY_EXISTS, while evaluating GPE method [_L01] 20090521 evgpe-568
> > > 
> > > Do you mean rc7-git5 sometime boot fails even with the patch applied?
> > >
> > No. Patched kernel boots ok. Even successfully booted kernel sometimes has the given lines in dmesg.
> > (I'll watch more.)
> 

Yes, looks like:

> So the patch only fixes the oops, 
confirmed;

> we also need to fix the AE_ALREADY_EXISTS error.
> 
AE_ALREADY_EXISTS fix not confirmed. 
(AE_ALREADY_EXISTS errors are quite rare.)


	Sergey

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