linux-kernel - Re: acpi_ex_system_memory_space

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Date:	Thu, 27 Aug 2009 15:59:54 +0800
From:	Lin Ming <ming.m.lin@...el.com>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.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 Thu, 2009-08-27 at 15:52 +0800, Sergey Senozhatsky wrote:
> On (08/18/09 15:18), Lin Ming wrote:
> 
> Hello Lin,
> 
> rc7-git5 (patched)
> 
> [    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?

> 
> 
> [...]
> +		if (!(region_obj->region.node->flags & ANOBJ_TEMPORARY)) {
> +			acpi_ex_exit_interpreter();
> +		}
> [...]
> Does it explain successful boot with delay (vga=791, prink delay, etc.)?

Sorry, could you explain the question a bit more?

Lin Ming

> 
> 
> > And would you please test the region-debug.patch multiple times to
> > verify if it really fixes the bug?
> > 
> rc7-git5 (nopatch)
> + -
> 
> rc7-git5 (patched)
> 20+ reboots
> 
> 	Sergey

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