linux-kernel - Re: acpi_ex_system_memory_space

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Date:	Tue, 18 Aug 2009 11:00:24 +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 (08/18/09 15:18), Lin Ming wrote:
> On Tue, 2009-08-18 at 15:13 +0800, Sergey Senozhatsky wrote:
> > On (08/17/09 21:22), Lin Ming wrote:
> > > > rc6-git2
> > > > 25 successful reboots.
> > > >
> > > > I'll need some more time to test against rc5.
> > > >
> > > > /*should I also test DSDT in case region-debug.patch fixed the problem?*/
> > > 
> > > Yes, please also help to test the custome DSDT.
> > > region-debug.patch is just a debug patch.
> > > We need to root cause the problem clearly and then work out a clean solution.
> > > 
> > 
> > Hi, Lin
> > Looks like DSDT didn't solve the problem (oops on 4th reboot).
> > 
> > So:
> > region-debug.patch	+
> > DSDT			-
> > 
> > /* Is that possible? */
> 
> Yes, that is possible. 
> The same aml method is re-entered when interpreter lock is released.
> So you still see AE_ALREADY_EXISTS error with the custom DSDT, right?
> 

No, here it is:
[    0.000000] ACPI: Override [DSDT-F3J00001], this is unsafe: tainting kernel

Problem with AE_ALREADY_EXISTS is that that is quite rare.
I'll continue watching.

At the moment:
[    0.165424] ACPI: EC: Look up EC in DSDT
[    0.181759] ACPI: Interpreter enabled
[    0.181780] ACPI: (supports S0 S1 S3 S4 S5)
[    0.181831] ACPI: Using IOAPIC for interrupt routing
[    0.182022] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.193803] PCI: MCFG area at e0000000 reserved in ACPI motherboard resources
[    0.193822] PCI: updated MCFG configuration 0: base e0000000 segment 0 buses 0 - 63
[    0.193840] PCI: Using MMCONFIG for extended config space
[    0.203749] ACPI: EC: GPE = 0x1c, I/O: command/status = 0x66, data = 0x62
[    0.203766] ACPI: EC: driver started in poll mode
[    0.206839] ACPI: No dock devices found.
[    0.207026] ACPI: PCI Root Bridge [PCI0] (0000:00)


	Sergey
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